Annals of Occupational and Environmental Medicine

Most-cited are based on citations from 2022 ~ 2024.

Special Issue

Working hours and the regulations in Korea: Inah Kim, Jeehee Min; Ann Occup Environ Med 2023;35:e18. Published online July 6, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e18

Abstract PDF Supplementary Material PubReader ePub

South Korea has the highest policy priority for working hour regulations because it has longer annual working hours than other Organization for Economic Development Co-operation and Development countries and has fewer holidays. According to the results of the Working Conditions Surveys between 2006 and 2020, in 2020, 6% of wage earners worked for > 52 hours weekly. The percentage of workers exceeding 52 hours weekly has decreased over time; however, disparities exist based on age, industry, occupation, company type, and company size, particularly in service-, arts-, and culture-related occupations and workplaces with fewer than 5 employees. South Korea’s working hours system is greatly influenced by the 52-hour weekly maximum; sometimes, a maximum of 64–69 hours, including overtime, is theoretically possible. To ensure healthy working hours, it is important to actively protect workers who fall through the cracks, such as those in businesses with fewer than 5 employees.

Citations

Citations to this article as recorded by

Effect of long working hours on psychological distress among young workers in different types of occupation
Seong-Uk Baek, Jin-Ha Yoon
Preventive Medicine.2024; 179: 107829. CrossRef
Association between long working hours and diet quality and patterns: A latent profile analysis of a nationally representative sample of Korean workers
Seong-Uk Baek, Jong-Uk Won, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107890. CrossRef
Long working hours, work-life imbalance, and poor mental health: a cross-sectional mediation analysis based on the sixth Korean Working Conditions Survey, 2020–2021
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon, Jong-Uk Won
Journal of Epidemiology.2024;[Epub] CrossRef
Association between long working hours and the onset of problematic alcohol use in young workers: A population-based longitudinal analysis in South Korea
Seong-Uk Baek, Jong-Uk Won, Jin-Ha Yoon
Journal of Affective Disorders.2024; 344: 141. CrossRef
Sex differences in the association between social jetlag and hazardous alcohol consumption in Korean workers: A nationwide cross-sectional study
Seong-Uk Baek, Jong-Uk Won, Yu-Min Lee, Jin-Ha Yoon
Sleep Medicine.2024; 119: 549. CrossRef
Association of low-quality employment with the development of suicidal thought and suicide planning in workers: A longitudinal study in Korea
Seong-Uk Baek, Jin-Ha Yoon, Yu-Min Lee, Jong-Uk Won
Social Science & Medicine.2024; 358: 117219. CrossRef
Changes in Korea’s working time policy: the need for research on flexible working hours considering socioeconomic inequality
Inah KIM
Industrial Health.2024; 62(2): 77. CrossRef
Association between long working hours and engagement in preventive healthcare services in Korean workers: Findings from the Korean National Health and Nutrition Examination Survey
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107849. CrossRef
Association between long working hours and metabolic dysfunction–associated steatotic liver disease: a nationwide population-based study in Korea
S.-U. Baek, J.-U. Won, Y.-M. Lee, J.-H. Yoon
Public Health.2024; 232: 188. CrossRef
How does working time impact perceived mental disorders? New insights into the U-shaped relationship
Xiaoru Niu, Chao Li, Yuxin Xia
Frontiers in Public Health.2024;[Epub] CrossRef
Temporary Employment Is Associated with Poor Dietary Quality in Middle-Aged Workers in Korea: A Nationwide Study Based on the Korean Healthy Eating Index, 2013–2021
Seong-Uk Baek, Myeong-Hun Lim, Yu-Min Lee, Jong-Uk Won, Jin-Ha Yoon
Nutrients.2024; 16(10): 1482. CrossRef
Association between long working hours and the development of suicidal ideation among female workers: An 8-year population-based study using the Korean Longitudinal Survey of Women & Family (2012–2020)
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Psychiatry Research.2024; 333: 115731. CrossRef
Special Series I: Working hours as a social determinant of workers’ health
Kyunghee Jung-Choi, Tae-Won Jang, Mo-Yeol Kang, Jungwon Kim, Eun-A Kim
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef

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13 Crossref

Special Issue

Statement by the Korean Society of Occupational and Environmental Medicine on the proposed reform of working hours in South Korea: Hee-Tae Kang, Chul-Ju Kim, Dong-Wook Lee, Seung-Gwon Park, Jinwoo Lee, Kanwoo Youn, Hwan-Cheol Kim, Kyoung Sook Jeong, Hansoo Song, Sung-Kyung Kim, Sang-Baek Koh; Ann Occup Environ Med 2023;35:e17. Published online July 5, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e17

Abstract PDF Supplementary Material PubReader ePub

The current 52-hour workweek in South Korea consists of 40 hours of regular work and 12 hours of overtime. Although the average working hours in South Korea is declining, it is still 199 hours longer than the Organisation for Economic Co-operation and Development average of 1,716 hours per year. In view to this, the South Korean government has now proposed to reform the workweek, mainly intending to increase the workweek to 69 hours when the workload is heavy. This reform, by increasing the labor intensity due to long working hours, goes against the global trend of reducing work hours for a safe and healthy working environment. Long working hours can lead to increased cerebrovascular and cardiovascular diseases, industrial accidents, mental health problems, and safety accidents due to lack of concentration. In conclusion, the Korean government’s working hour reform plan can have a negative impact on workers’ health, and therefore it should be thoroughly reviewed and modified.

Citations

Citations to this article as recorded by

Association between long working hours and metabolic dysfunction–associated steatotic liver disease: a nationwide population-based study in Korea
S.-U. Baek, J.-U. Won, Y.-M. Lee, J.-H. Yoon
Public Health.2024; 232: 188. CrossRef
Association between long working hours and engagement in preventive healthcare services in Korean workers: Findings from the Korean National Health and Nutrition Examination Survey
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107849. CrossRef
Long working hours, work-life imbalance, and poor mental health: a cross-sectional mediation analysis based on the sixth Korean Working Conditions Survey, 2020–2021
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon, Jong-Uk Won
Journal of Epidemiology.2024;[Epub] CrossRef
Association between long working hours and the onset of problematic alcohol use in young workers: A population-based longitudinal analysis in South Korea
Seong-Uk Baek, Jong-Uk Won, Jin-Ha Yoon
Journal of Affective Disorders.2024; 344: 141. CrossRef
Changes in Korea’s working time policy: the need for research on flexible working hours considering socioeconomic inequality
Inah KIM
Industrial Health.2024; 62(2): 77. CrossRef
Effect of long working hours on psychological distress among young workers in different types of occupation
Seong-Uk Baek, Jin-Ha Yoon
Preventive Medicine.2024; 179: 107829. CrossRef
Association between long working hours and the development of suicidal ideation among female workers: An 8-year population-based study using the Korean Longitudinal Survey of Women & Family (2012–2020)
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Psychiatry Research.2024; 333: 115731. CrossRef
Special Series I: Working hours as a social determinant of workers’ health
Kyunghee Jung-Choi, Tae-Won Jang, Mo-Yeol Kang, Jungwon Kim, Eun-A Kim
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef
Association between long working hours and cigarette smoking, leisure-time physical activity, and risky alcohol use: Findings from the Korea National Health and Nutrition Examination Survey (2014–2021)
Seong-Uk Baek, Jin-Ha Yoon
Preventive Medicine.2023; 175: 107691. CrossRef

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8 Web of Science
9 Crossref

Original Article

Relationship between of working hours, weekend work, and shift work and work-family conflicts among Korean manufacturers: Yohan Lee, SooYoung Lee, Yoon-Ji Kim, Youngki Kim, Se-Yeong Kim, Dongmug Kang; Ann Occup Environ Med 2022;34:e20. Published online August 8, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e20

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

In the manufacturing industry, work-family conflict (WFC) is related to working hour characteristics. Earlier studies on the relationship between working hour characteristics and WFC in the manufacturing industry have been limited to some regions in Korea. No study has addressed the data on a national scale. Thus, this study investigated the impact of weekly working hours, weekend work, and shift work on WFC using national-scale data.

Methods

This study was based on the fifth Korean Working Conditions Survey of 5,432 manufacturers. WFC consists of 5 variables; WFC1 “kept worrying about work”; WFC2 “felt too tired after work”; WFC3 “work prevented time for family”; WFC4 “difficult to concentrate on work”; WFC5 “family responsibilities prevented time for work”. As WFC refers to the inter-role conflict between the need for paid work and family work, WFC has been measured in two directions, work to family conflict (WTFC: WFC1, 2, 3) and family to work conflict (FTWC: WFC4, 5). With these WFC variables, we conducted multiple logistic analyses to study how working hours, weekend work, and shift work impact WFC.

Results

Korean manufacturers’ prolonged working hours increased all aspects of WFCs. Odds ratios (ORs) of WFCs based on working hours (reference of under 40 hours) of 41–52, 53–60, over 61 were 1.247, 1.611, 2.279 (WFC1); 1.111, 2.561, 6.442 (WFC2); 1.219, 3.495, 8.327 (WFC3); 1.076, 2.019, 2.656 (WFC4); and 1.166, 1.592, 1.946 (WFC5), respectively. Shift-work in the WFC2 model showed a significantly higher OR of 1.390. Weekend work ‘only on Saturday’ had significant ORs with WFC2 (1.323) and WFC3 (1.552).

Conclusions

An increase in working hours leads to the spending of less time attending to problems between work and family, causing both WTFC and FTWC to increase. As weekends, evenings, and nighttime are considered to be family-friendly to people, working on weekends and shift-work were highly correlated to WTFC.

한국 제조업 노동자에서 근무시간, 주말근무 및 교대근무와 일-가정 양립의 관계
목적
현대 사회에서는 야간 근무를 포함하여 다양한 업무를 수행하는 교대 근무자가 증가하고 있다. 교대 근무는 장기적으로 근로자의 건강에 악영향을 미칠 수 있지만 교대 근무와 우울증의 관계에 대한 연구 결과는 일관성이 없는 것으로 나타났다. 본 연구는 PHQ-9로 예측한 우울증에 걸릴 위험이 높은 국내 야간 및 교대 근무 근로자 수가 주간 근로자보다 많은지 여부를 확인하고자 한다.
방법
본 연구는 제 6 차 및 제 7 차 국민 건강 영양 조사 자료 중 2014, 2016년 및 2018년의 자료를 바탕으로 진행되었다. 근무 일정은 주간 근무와 야간 및 교대근무로 구분 하였다. 이 연구는 우울증에 걸릴 위험이 있는 근로자를 결정하기 위해 자가 보고 우울증 선별 검사 인 PHQ-9를 사용하였다. SPSS 23.0을 이용하여 통계 분석을 수행하였고 통계적 방법으로는 기술 통계, 카이 제곱 분석, 로지스틱 회귀 분석을 사용 하였다.
결과
연령, 교육 수준, 주당 근무 시간 및 수입으로 보정 후 분석하였을 때, 야간 및 교대 근무 근로자에서 우울증 위험군에 해당하는 경우가 유의하게 더 높았으며(odds ratio [OR] = 1.407 (95% confidence interval [CI]: 0.937–2.113)), 이는 여성에서도 마찬가지로 나타났다(odds ratio [OR] = 1.564 (95% confidence interval [CI]: 1.176–2.081)).
결론
본 연구를 통해 야간 및 교대근무 근로자에서 PHQ-9 점수가 10점 이상인 우울증 위험군에 해당하는 경우가 유의하게 높음을 확인할 수 있었다. 현재 한국의 정신 병력과 증상의 유병률을 고려할 때 야간 근로자에게 현실적인 도움을 제공 할 수 있는 방법에 대한 추가 논의와 함께 추가 연구가 필요하다.

Citations

Citations to this article as recorded by

Association between long working hours and the development of suicidal ideation among female workers: An 8-year population-based study using the Korean Longitudinal Survey of Women & Family (2012–2020)
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Psychiatry Research.2024; 333: 115731. CrossRef
Food Manufacturing Workers and Structural Causality among Work Environment, Work–Family Conflict, Musculoskeletal Pain, Sleep-Related Problems, and Burnout
Jun Won Kim, Byung Yong Jeong
Applied Sciences.2024; 14(17): 7489. CrossRef
Association between long working hours and engagement in preventive healthcare services in Korean workers: Findings from the Korean National Health and Nutrition Examination Survey
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107849. CrossRef
Association between long working hours and physical inactivity in middle-aged and older adults: a Korean longitudinal study (2006–2020)
Seong-Uk Baek, Won-Tae Lee, Min-Seok Kim, Myeong-Hun Lim, Jin-Ha Yoon, Jong-Uk Won
Journal of Epidemiology and Community Health.2023; 77(6): 355. CrossRef
Working hours and the onset of suicidal ideation and depressive symptoms: A 10-year nationwide longitudinal study in South Korea (2012–2022)
Seong-Uk Baek, Min-Seok Kim, Myeong-Hun Lim, Taeyeon Kim, Jong-Uk Won, Jin-Ha Yoon
Psychiatry Research.2023; 326: 115344. CrossRef
The role of work–family conflict in the association between long working hours and workers’ sleep disturbance and burnout: results from the sixth Korean Working Conditions Survey
Seong-Uk Baek, Jong-Uk Won, Jin-Ha Yoon
BJPsych Open.2023;[Epub] CrossRef
Association between unpredictable work schedule and work-family conflict in Korea
Sang Moon Choi, Chan Woo Kim, Hyoung Ouk Park, Yong Tae Park
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef
Mediating Effect of Work–Family Conflict on the Relationship Between Long Commuting Time and Workers' Anxiety and Insomnia
Seong-Uk Baek, Jin-Ha Yoon, Jong-Uk Won
Safety and Health at Work.2023; 14(1): 100. CrossRef
Association Between Commuting Time and Subjective Well-Being in Relation to Regional Differences in Korea
Jaehyuk Jung, Kwon Ko, Jae Bum Park, Kyung-Jong Lee, Yong Hyuk Cho, Inchul Jeong
Journal of Korean Medical Science.2023;[Epub] CrossRef

433 View
7 Download
10 Web of Science
9 Crossref

Original Article

The effect of long working hours on developing type 2 diabetes in adults with prediabetes: The Kangbuk Samsung Cohort Study: Eunhye Seo, Yesung Lee, Eunchan Mun, Dae Hoon Kim, Youshik Jeong, Jaehong Lee, Jinsook Jeong, Woncheol Lee; Ann Occup Environ Med 2022;34:e4. Published online March 14, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e4

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Long working hours are known to account for approximately one-third of the total expected work-related diseases, and much interest and research on long working hours have recently been conducted. Additionally, as the prevalence of prediabetes and the high-risk group for diabetes are increasing worldwide, interest in prediabetes is also rising. However, few studies have addressed the development of type 2 diabetes and long working hours in prediabetes. Therefore, the aim of this longitudinal study was to evaluate the relationship between long working hours and the development of diabetes in prediabetes.

Methods

We included 14,258 prediabetes participants with hemoglobinA1c (HbA1c) level of 5.7 to 6.4 in the Kangbuk Samsung Cohort Study. According to a self-reported questionnaire, we evaluated weekly working hours, which were categorized into 35–40, 41–52, and > 52 hours. Development of diabetes was defined as an HbA1c level ≥ 6.5%. Hazard ratios (HRs) and 95% confidence intervals (CIs) for the development of diabetes were estimated using Cox proportional hazards analyses with weekly working 35–40 hours as the reference.

Results

During a median follow-up of 3.0 years, 776 participants developed diabetes (incidence density, 1.66 per 100 person-years). Multivariable-adjusted HRs of development of diabetes for weekly working > 52 hours compared with working 35–40 hours were 2.00 (95% CI: 1.50–2.67). In subgroup analyses by age (< 40 years old, ≥ 40 years old), sex (men, women), and household income (< 6 million KRW, ≥ 6 million KRW), consistent and significant positive associations were observed in all groups.

Conclusions

In our large-scale longitudinal study, long working hours increases the risk of developing diabetes in prediabetes patients.

당뇨전단계 성인의 제 2형 당뇨로 진행에 대한 장시간 근무의 영향: 강북삼성 코호트 연구
목적
이 연구의 목적은 당뇨전단계라는 고위험그룹에서 장시간 노동과 당뇨로의 진행 사이의 관계를 종단적 연구로 평가하는 것이다.
방법
연구는 강북 삼성 종합 건진 센터에서 2012년 1월 1일부터 2018년 12월 31 일 사이에 최소 두번의 건강검진을 받은 수검자 중, HbA1c 수치가 5.7~6.4인 당뇨전단계 기준을 만족하는 14,258명을 포함했다. 참가자들은 자체 보고된 설문지를 사용하여 3개 그룹 (35-40시간, 41-52시간 및 >52시간)으로 나뉘었고 당뇨로의 진행은 HbA1c 수치 ≥6.5%로 정의되었다. 당뇨 발병에 대한 위험 비율(HR) 및 95% 신뢰 구간(CI)은 주당 35-40시간 근무하는 그룹을 기준으로 Cox 비례 위험 분석을 사용하여 추정되었다.
결과
중앙값 3.0년의 추적 기간 동안 776명의 참가자가 당뇨(발병률, 100인년당 1.66)로 발전했습니다. 주당 근무시간이 35-40시간인 그룹과 비교하여 52시간 초과 근무한 그룹의 다 변수 조정 당뇨 발생 위험비율은 2.00(95% 신뢰구간 [1.50–2.67])이었다. 연령(40세 미만, 40세 이상), 성별(남성, 여성) 및 가계 소득(600만원, 600만원)에 따른 하위 그룹 분석에서 모든 그룹에서 일관되고 유의한 연관성이 관찰되었다.
결론
이 대규모 종단 연구는 당뇨전단계에서 긴 근무 시간이 당뇨 발병과 관련이 있음을 보여주었다.

Citations

Citations to this article as recorded by

Association between long working hours and diet quality and patterns: A latent profile analysis of a nationally representative sample of Korean workers
Seong-Uk Baek, Jong-Uk Won, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107890. CrossRef
Working Hours, Shift, and Remote Work by Industry and Occupation in U.S. Full-time Workers
Guang X. Chen
Workplace Health & Safety.2024; 72(9): 392. CrossRef
The impact of long working hours on daily sodium intake
Kyungho Ju, Yangwoo Kim, Seung Hee Woo, Juhyeong Kim, Inah Kim, Jaechul Song, Soo-Jin Lee, Jeehee Min
Annals of Occupational and Environmental Medicine.2024;[Epub] CrossRef
Investigating medication adherence among Taiwanese patient with hypertension, hyperlipidemia, and diabetes: A pilot study using the Chinese version of a Two-Part Medication Nonadherence Scale and the NHI MediCloud system
Ya-Wen Lin, Pei-Chun Chen, Che-Huei Lin, Ming-Hung Lin, Fadwa Alhalaiqa
PLOS ONE.2024; 19(7): e0304442. CrossRef
Relationship between Marriage and Prediabetes among Healthcare Workers: Mediating Effect of Triglycerides
Yong-Hsin Chen, Jia-June Lin, Hsiu-Mei Tang, Ching-Wen Yang, Gwo-Ping Jong, Yi-Sun Yang
Medicina.2024; 60(9): 1418. CrossRef
Association between long working hours and metabolic dysfunction–associated steatotic liver disease: a nationwide population-based study in Korea
S.-U. Baek, J.-U. Won, Y.-M. Lee, J.-H. Yoon
Public Health.2024; 232: 188. CrossRef
Working hours and the onset of suicidal ideation and depressive symptoms: A 10-year nationwide longitudinal study in South Korea (2012–2022)
Seong-Uk Baek, Min-Seok Kim, Myeong-Hun Lim, Taeyeon Kim, Jong-Uk Won, Jin-Ha Yoon
Psychiatry Research.2023; 326: 115344. CrossRef
Association between long working hours and physical inactivity in middle-aged and older adults: a Korean longitudinal study (2006–2020)
Seong-Uk Baek, Won-Tae Lee, Min-Seok Kim, Myeong-Hun Lim, Jin-Ha Yoon, Jong-Uk Won
Journal of Epidemiology and Community Health.2023; 77(6): 355. CrossRef
The Korea Cohort Consortium: The Future of Pooling Cohort Studies
Sangjun Lee, Kwang-Pil Ko, Jung Eun Lee, Inah Kim, Sun Ha Jee, Aesun Shin, Sun-Seog Kweon, Min-Ho Shin, Sangmin Park, Seungho Ryu, Sun Young Yang, Seung Ho Choi, Jeongseon Kim, Sang-Wook Yi, Daehee Kang, Keun-Young Yoo, Sue K. Park
Journal of Preventive Medicine and Public Health.2022; 55(5): 464. CrossRef

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Special Issue

The impacts of working time flexibilization on occupational safety and health: an expert survey: Daseul Moon, Hyunjoo Kim; Ann Occup Environ Med 2023;35:e20. Published online July 20, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e20

Abstract PDF Supplementary Material PubReader ePub

The policy proposal by the current Korean government that proposes flexible overtime rules is causing social controversy. This study has explored the 612 experts’ opinions on the occupational safety and health impacts of the policy using an online self-report survey. They expected short-term overwork (87.25%), overwork inequality (86.44%), irregular working hours (84.31%), chronic overwork (84.15%), long working hours (83.66%), and unpredictability of working hours (81.86%) as a result of the policy change. They also responded that the policy change would increase industrial accident deaths (87.25%), mental illnesses (87.09%), deaths due to overwork or cardiovascular diseases (83.84%), and accidents (83.33%). They disagreed that the government’s flexibilization policy, while agreeing that the necessity of policies on regulating night work (94.77%), guaranteeing wages to eliminate overtime (90.36%), establishing working time regulations for the bogus self-employed (82.84%), and applying the 52-hour workweek system to all workplaces (76.47%). These expert opinions are consistent with previous research on the health effects of working hours.

Citations

Citations to this article as recorded by

Association between long working hours and engagement in preventive healthcare services in Korean workers: Findings from the Korean National Health and Nutrition Examination Survey
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107849. CrossRef
Effect of long working hours on psychological distress among young workers in different types of occupation
Seong-Uk Baek, Jin-Ha Yoon
Preventive Medicine.2024; 179: 107829. CrossRef
Association between long working hours and diet quality and patterns: A latent profile analysis of a nationally representative sample of Korean workers
Seong-Uk Baek, Jong-Uk Won, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107890. CrossRef
Association of precarious employment with depressive symptoms and suicidal ideation among female workers: Findings from a nationwide longitudinal study in Korea
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Journal of Affective Disorders.2024; 351: 931. CrossRef
Association between long working hours and metabolic dysfunction–associated steatotic liver disease: a nationwide population-based study in Korea
S.-U. Baek, J.-U. Won, Y.-M. Lee, J.-H. Yoon
Public Health.2024; 232: 188. CrossRef
Association between long working hours and the development of suicidal ideation among female workers: An 8-year population-based study using the Korean Longitudinal Survey of Women & Family (2012–2020)
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Psychiatry Research.2024; 333: 115731. CrossRef
Association of low-quality employment with the development of suicidal thought and suicide planning in workers: A longitudinal study in Korea
Seong-Uk Baek, Jin-Ha Yoon, Yu-Min Lee, Jong-Uk Won
Social Science & Medicine.2024; 358: 117219. CrossRef
Special Series I: Working hours as a social determinant of workers’ health
Kyunghee Jung-Choi, Tae-Won Jang, Mo-Yeol Kang, Jungwon Kim, Eun-A Kim
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef

289 View
7 Download
8 Web of Science
8 Crossref

Special Issue

Working hours and the regulations for night shift workers: Tae-Won Jang; Ann Occup Environ Med 2023;35:e19. Published online July 5, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e19

Abstract PDF Supplementary Material PubReader ePub

There are several types of shift work in Korea: rotating shift, 24-hour shift, day-night shift, fixed night work, and.so on. As a result of analyzing the 8th Korea National Health and Nutrition Examination Survey and the 6th Korean Working Condition Survey, Korean shift workers accounted for 11.6%–13.9% of wage workers. Weekly working hours of shift workers were 57.69 ± 1.73 (24-hours shift) and 49.97 ± 0.67 (fixed night shift), which were significantly longer than day workers. To prevent health consequences of night work, many countries regulate the working hours of night work not to exceed 7–9 hours a day. However, Korea does not regulate working hours for night work, and some occupations may work more hours than the prescribed overtime hours. To prevent health consequences and reduce working hours for Korean night shift workers, it is necessary to regulate the working hours of night shift workers by law.

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Data Profile

Data resource profile: the Korean Working Conditions Survey (KWCS): Yoonho Cho; Ann Occup Environ Med 2023;35:e49. Published online November 23, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e49

Abstract Abstract in Korean PDF PubReader ePub

The Korean Working Conditions Survey (KWCS) is a state-approved statistical survey that has been conducted by the Occupational Safety and Health Research Institute (OSHRI) every 3 years since 2006 to monitor changes in the working conditions of Koreans. This cross-sectional national survey involves a sample of 50,000 employed people aged 15 or older. KWCS measures various working conditions through > 130 survey questions, including questions regarding working hours, labor intensity, work–life balance, degree of exposure to risk factors, and subjective health status. Professional survey interviewers visit households and conduct face to face interviews. KWCS provides data and statistics for occupational safety and health polices and research in Korea. Furthermore, OSHRI holds academic conferences every year, awards high-quality academic papers, and supports researchers using data. Microdata is publicly available through the OSHRI website (https://oshri.kosha.or.kr).

자료원 프로파일: 근로환경조사
KWCS는 국가승인통계로 대한민국에 거주하는 만15세 이상 취업자 5만명을 표본으로 매 3년마다 실시하는 단면적 조사로, 2006년부터 산업안전보건연구원에서 실시하고 있다. KWCS는 전문조사원에 의해 가구를 방문하여 1:1 면접 조사로 이루어지며, 근무시간, 노동강도, 일과 삶의 균형, 유해위험요인에 대한 노출 정도, 주관적 건강상태 등 다양한 근로환경에 대해 130여개 이상의 문항에 대해 조사한다. 조사 결과는 정책 수립과 연구자를 위한 기초 자료로 제공하고 있으며, 마이크로데이터는 산업안전보건연구원 홈페이지(OSHRI.OR.KR)를 통해 공개하고 있다.

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Original Article

Use of work-related communication technology outside regular working hours and work-family conflict (work interference with family and family interference with work): results from the 6th Korean working conditions survey: Baek-Yong Choi, Jin-Young Min, Seung-Woo Ryoo, Kyoung-Bok Min; Ann Occup Environ Med 2022;34:e44. Published online December 22, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e44

Abstract Abstract in Korean PDF PubReader ePub

Background

Recently, use of work-related communication technology—smartphones, tablets, and laptops—is increasing rapidly by development of technology with the coronavirus disease 2019 pandemic. Some studies have suggested that work-related communication technology has a significant link with work-family conflict (WFC) but these studies included only limited number of participants and lacked essential covariates. Therefore, this study analyzes this association using large representative data sample and selected waged workers who were married-couples with children.

Methods

This study was conducted based on data from the 6th Korean Working Conditions Surveys (KWCS). A total of 17,426 waged workers having a marriage partner and one or more children were selected. Logistic regression analysis was performed to determine whether WFC was associated with communication technology use. The odds ratios (ORs) for WFC were stratified by sex and working hours.

Results

In fully adjusted model, WFC was higher those who used communication technology outside regular working hours compared with those who did not use it (OR: 1.66; 95% confidence interval [CI]: 1.39–1.97). When stratified by sex and working hours, the effect was greater in women than in men (OR: 1.79; 95% CI: 1.42–2.26 vs. OR: 1.52; 95% CI: 1.17–1.97) and women who worked over 52 hours per week had the highest OR (3.40; 95% CI: 1.25–9.26).

Conclusions

This study revealed that the work-related communication technology use outside regular working hours was associated with WFC. The association were greater among those having longer working hours and female workers. These results suggest that appropriate policy should be implemented to reduce working hours and right to disconnect after work, particularly in female workers.

근무 시간 외 업무 관련 통신기기 사용과 일-가정 갈등 (일-가정 방해 갈등, 가정-일 방해 갈등): 제6차 근로환경조사를 이용하여
목적
최근 스마트폰, 태블릿, 노트북과 같은 통신기기의 발달과 2019년 코로나19 팬데믹으로 인하여 업무 관련 통신기기의 사용이 꾸준히 늘고 있다. 선행연구에 따르면 업무 관련 통신기기의 사용과 일-가정 갈등과의 연관성이 제시되고 있으나, 연구대상자 수가 제한적이며 필수적인 보정변수가 적용되지 못하였다. 따라서 본 연구에서는 대표성을 갖춘 제6차 근로환경조사를 이용하고 배우자와 자녀가 있는 근로자만을 대상으로 하여 그 연관성에 대한 분석하고자 하였다.
방법
본 연구는 제6차 근로환경조사를 이용하였고, 일-가정 갈등의 유발 요소가 있는 배우자와 자녀가 있는 17,426명의 임금근로자를 선별하였다. 통계분석 방법으로는 로지스틱 회귀분석을 시행하여 정규 근무 시간 외 업무 관련 통신기기 사용으로 인한 일-가정 갈등 사이의 연관성을 분석하였다. 또한 성별 및 근로시간에 따른 층화 분석을 시행하였다.
결과
모든 보정변수를 적용하였을 때, 위 연관성은 통계적으로 유의하였으며 통신 기기를 사용하지 않은 군에 비해 통신기기를 사용한 군에서 일-가정 갈등이 유발될 오즈비는 1.66배 (95% CI:1.39-1.97)로 나타났다. 성별과 근로시간에 따라 층화하여 분석하였을 때 남성 (OR: 1.52; 95% CI: 1.17–1.97)보다 여성 (OR: 1.79; 95% CI: 1.42–2.26)에서 일-가정 갈등의 위험이 더 큰 것으로 나타났다. 특히, 주당 근로시간 52시간을 초과한 여성 군의 경우 일-가정 갈등이 발생할 위험이 가장 높은 것으로 분석되었다 (3.40; 95% CI: 1.25–9.26).
결론
본 연구에 따르면, 근무 시간 외 업무 관련 통신기기의 사용과 일-가정 갈등 사이의 연관성이 있으며 그 영향은 여성 및 장시간 근로자에서 더욱 크게 나타났다. 따라서 이러한 결과를 보았을 때, 장시간 근로를 감소시키기 위한 꾸준한 노력이 필요하며, 또한 여성근로자에서 퇴근 이후 연결되지 않을 권리 보장을 위한 정책 도입에 관한 지속적인 관심이 필요할 것이다.

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Original Article

Relationship between workplace violence and work-related depression/anxiety, separating the types of perpetrators: a cross-sectional study using data from the fourth and fifth Korean Working Conditions Surveys (KWCS): Na-Rae Lee, Sang-Woo Kim, Jae-Han Joo, Jae-Han Lee, June-Hee Lee, Kyung-Jae Lee; Ann Occup Environ Med 2022;34:e13. Published online June 10, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e13

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Work is an inseparable element of a person’s life, and violence in the workplace has various effects on individual workers and companies. While most studies have focused on specific industries, very few studies have investigated the influence of workplace violence by co-workers. Therefore, this study aimed to evaluate the association between workplace violence and work-related depression/anxiety in various occupations by differentiating the perpetrators of violence as co-workers and clients.

Methods

This study was conducted based on data from the 4th and 5th Korean Working Conditions Surveys (KWCS). The experience of workplace violence was classified in terms of the perpetrator: workplace violence by co-workers and that by clients. Work-related depression and anxiety were assessed using questions about health problems related to depression and anxiety and whether the problems were related to work. Descriptive statistics, χ² tests, and multiple logistic regression analyses were performed using the SPSS 26.0.

Results

After adjusting for sociodemographic characteristics (age, education, income, subjective health status) and occupational characteristics (occupation, weekly working hours, type of employment, size of workplace, and shift work), male workers with experience of workplace violence by co-workers were found to be at a higher risk of work-related depression/anxiety (odds ratio [OR], 11.52; 95% confidence interval [CI], 8.65–15.36). The same was confirmed for female workers (OR, 10.89; 95% CI, 7.90–15.02).

Conclusions

Employees who experienced workplace violence from co-workers were found to be more vulnerable to work-related depression/anxiety. Continuous contact between the victim and the perpetrator may occur, and the possibility of a secondary assault can frighten the victim. Appropriate prevention and intervention measures that focus on the perpetrators of violence are needed.

가해자 유형별 작업장 폭력과 업무 관련 우울/불안의 연관성
목적
작업장 폭력은 근로환경에서 타인에게 의도적으로 상해, 사망, 정신적 손상, 발달장애 또는 결핍을 일으키는 행위나 위협을 가하는 것으로, 근로자의 신체적·정신적 건강에 부정적 영향을 미치며 기업의 생산성을 저해한다. 작업장 폭력에 대한 대다수의 연구는 특정 직종에 초점을 맞추고 있어 직장 동료에 의해 내부에서 발생하는 작업장 폭력의 영향이 잘 반영되지 않을 수 있다. 본 연구를 통해 가해자 유형별 업무 관련 우울/불안의 연관성을 비교‧확인하고자 한다.
방법
제 4차 및 제 5차 근로환경조사를 바탕으로, 만 18세 이상 피고용자 55,201 명에서 작업장 폭력에 대한 경험과 그 가해자 및 업무 관련 우울/불안 유무를 분석하였다. SPSS 26.0을 통해 기술통계, 카이제곱검정 및 다중로짓회귀분석을 시행했고, 직장 동료 혹은 고객에 의해 작업장 폭력을 경험한 근로자에서 작업장 폭력을 경험하지 않은 근로자에 비해 업무 관련 우울/불안이 있을 위험에 대한 Odds ratio [OR]를 구하였다.
결과
성별을 막론하여 직장 동료 혹은 고객에 의해 작업장 폭력을 경험한 근로자의 경우 작업장 폭력을 경험하지 않은 근로자에 비해 업무 관련 우울/불안의 빈도가 유의하게 높았다. 작업장 폭력을 경험한 남성 근로자에서 업무 관련 우울/불안에 대한 OR은 가해자가 직장 동료일 경우 11.52 (95% Confidence interval [CI] 8.65-15.36), 고객일 경우 5.06 (95% CI 3.73-6.88)으로 나타났으며, 여성 근로자의 경우에도 마찬가지로 가해자가 직장 동료일 경우 OR 10.89 (95% CI 7.90-15.02), 고객일 경우 OR 4.94 (95% CI 3.77-6.47)로 나타났다.
결론
작업장 폭력을 경험한 근로자는 작업장 폭력 경험이 없는 근로자에 비해 업무 관련 우울/불안의 위험이 더 크다. 작업장 폭력의 가해자가 직장 동료일 경우, 피해자와 가해자가 동일 작업장 내에서 지속적으로 접촉하여 폭력에 대한 반복적인 회상 또는 2차 가해 등이 이루어지기 쉬운 환경이 조성되기 때문에 고객에 의한 작업장 폭력에 비해 업무 관련 우울/불안의 위험이 더 크게 나타날 수 있다. 작업장 폭력의 가해자를 고려한 적절한 예방 및 중재 조치가 필요하며, 해당 분야에 대해 후속 연구가 이루어져야 할 것으로 생각된다.

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Original Article

Correlation between shift work and non-alcoholic fatty liver disease among male workers in the steel manufacturing company of Korea: a cross-sectional study: Kiseok Kim, Yong-Jin Lee, Soon-Chan Kwon, Young-Sun Min, Hyun Kyo Lee, Gwangin Baek, Sang Hyeon Kim, Eun-Chul Jang; Ann Occup Environ Med 2022;34:e33. Published online November 2, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e33

Abstract Abstract in Korean PDF PubReader ePub

Background

Circadian rhythm disturbance caused by shift work has adverse effects on the metabolic homeostasis of the liver. Disruption of the metabolic homeostasis of the liver causes fat accumulation in the liver. The aim of this study was to investigate the correlation between shift work and non-alcoholic fatty liver disease (NAFLD) among male workers in the steel manufacturing industry of Korea.

Methods

Based on medical examination data collected in June 2020, 2,511 male subjects from one steel manufacturing company in Korea were selected in total. NAFLD was evaluated using abdominal ultrasound, which was performed by two experienced radiologists. The multinomial logistic regression analysis was performed by adjusting for age, physical activity, smoking history, alcohol consumption, body mass index, waist circumference, blood pressure, blood glucose, lipidemia, liver function test, employment duration, and hepatotoxic materials exposure status.

Results

Compared to daytime workers, the odds ratio (OR) of moderate-severe NAFLD in shift workers was 1.449 (95% confidence interval [CI], 1.028–2.043). Compared to daytime workers, the ORs of moderate-severe NAFLD were significantly higher for the group that engaged in total shift work for more than 20 years (OR, 2.285; 95% CI, 1.051–4.970), the group that was not allowed to sleep during night shift work (OR, 1.463; 95% CI, 1.030–2.078), and the group that consumed food during night shift work (OR, 1.580; 95% CI, 1.093–2.284).

Conclusions

There was a correlation between shift work and moderate-severe NAFLD in male steel manufacturing workers. There will be a need for more research related to the correlation of shift work with steatohepatitis and cirrhosis in the future.

한국 철강 제조업 남성 근로자의 교대근무와 비알코올성 지방간 질환의 상관관계 연구 : 단면연구.
목적
교대근무로 인한 일주기 리듬 교란은 간의 신진대사 항상성에 부정적인 영향을 미친다. 간의 신진대사 항상성 교란은 간에 지방 축적을 일으킨다. 본 연구의 목적은 한국 철강 제조업 남성 근로자의 교대근무와 비알코올성 지방간 질환의 상관관계를 조사하는 것이다.
방법
2020년 6월 수집한 건강검진 자료를 바탕으로 국내 1개 철강 제조업 사업장에서 총 2,511명의 대상자를 선정하였다. 비알코올성 지방간은 두 명의 숙련된 방사선사가 수행한 복부 초음파를 기준으로 평가되었다. 연령, 신체활동, 흡연력, 알코올 소비량, 체질량 지수, 허리둘레, 혈압, 혈당, 지질혈증, 간 기능 검사, 근무 기간 및 간 독성 물질 노출 상태에 대한 보정을 시행한 다항 로지스틱 회귀분석을 실시하였다.
결과
주간 근로자 대비 교대 근무자의 중등도-고도 비알코올성 지방간의 오즈 비는 1.499 (95% 신뢰구간: 1.028-2.043)이었다. 총 교대근무 종사 기간 20년 이상인 군, 야간교대근무 중 수면이 불가능한 군, 그리고 야간교대근무 중 음식 섭취를 하는 군에서 주간 근로자 대비 통계적으로 유의미하게 큰 중등도-고도 비알코올성 지방간의 오즈 비를 보였다.
결론
교대근무는 한국 철강 제조업에 종사하는 남성 근로자의 중등도-고도 비알코올성 지방간과 상관관계가 있다. 앞으로 교대근무와 지방간염, 간경변과의 상관관계와 관련된 추가 연구가 필요할 것이다.

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Original Article

Analysis of self-reported mental health problems among the self-employed compared with paid workers in the Republic of Korea: Yongho Lee, Junhyeong Lee, Ui-Jin Kim, Eunseun Han, Seunghon Ham, Won-Jun Choi, Seong-Kyu Kang, Wanhyung Lee; Ann Occup Environ Med 2022;34:e8. Published online April 8, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e8

Abstract Abstract in Korean PDF PubReader ePub

Background

As self-employed workers are vulnerable to health problems, this study aimed to analyze mental health problems and sleep disturbances among self-employed workers compared with paid workers in Korea.

Methods

A total of 34,750 workers (23,938 paid workers and 10,812 self-employed workers) were analyzed from the fifth Korean Working Condition Survey, which included 50,205 households collected by stratified sampling in 2017. To compare mental health problems and sleep disturbance among self-employed workers and paid workers, multivariate logistic regression analyses were performed.

Results

The odds ratio in self-employed workers compared with paid workers was 1.25 (95% confidence interval [CI]: 1.09–1.42) for anxiety, 1.11 (95% CI: 1.04–1.17) for overall fatigue, 1.11 (95% CI: 1.04–1.20) for difficulty falling asleep, 1.10 (95% CI: 1.02–1.18) for difficulty maintaining sleep and 1.24 (95% CI: 1.16–1.32) for extreme fatigue after waking up.

Conclusions

Self-employed workers in Korea have a higher risk of self-reported mental health problems and sleep disturbances than paid workers. Further studies with a longitudinal design and structured evaluation are required to investigate the causal relationship between health problems and self-employment.

한국 자영업자의 주관적 정신건강 문제 : 제 5차 근로환경조사를 이용하여
목적
자영업자는 고용, 사업체 운영 등에 대한 스트레스를 받고 있으며 자신들의 건강관리에 취약한 것으로 여겨지고 있다. 이 연구는 자영업자들에게 초점을 맞춰 유급근로자들과 비교하여 정신건강 문제와 수면 장애를 분석하는 것을 목표로 하였다.
방법
이 연구는 한국의 5차 근로환경조사 데이터를 바탕으로 23,938명의 유급근로자와 10,812명의 자영업자들을 선택하여 분석을 수행하였다. 정신건강 문제는 ‘우울감’, ‘불안감’, ‘전신 피로’에 대한 설문과 수면 장애는 ‘잠들기가 어려움’, ‘자는 동안 반복적으로 깨어남’, ‘기진맥진함 또는 극도의 피곤함을 느끼며 깨어남’ 설문의 답변을 이용하였다. 자영업자의 정신건강 문제와 수면 장애를 분석하기 위해 다변량 로지스틱 회귀 분석을 시행하였다.
결과
자영업자에서의 ‘불안감’에 대한 보정된 오즈비는 1.25 (95% CI=1.09-1.42), ‘전신피로’는 1.11 (95% CI=1.04-1.17), ‘잠들기가 어려움’은 1.11 (95% CI=1.04-1.20), ‘자는 동안 반복적으로 깨어남’은 1.10 (95% CI=1.02-1.18) 그리고 ‘기진맥진함 또는 극도의 피곤함을 느끼며 깨어남’은 1.24 (95% CI=1.16-1.32)이었다.
결론
본 연구는 유급근로자에 비해 자영업자들의 정신건강 문제와 수면 장애의 위험성이 높은 것을 확인할 수 있었다. 자영업자들의 건강 보호와 증진을 위해 구조화된 설문, 전향적 연구 등의 추가적인 연구와 사회의 관심이 필요하다.

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Association between sickness presenteeism and depressive symptoms: a cross-sectional study using the 6th Korean working conditions survey
Myeong-Hun Lim, Min-Seok Kim, Seong-Uk Baek, Tae-Yeon Kim, Jong-Uk Won, Jin-Ha Yoon
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Multidimensional typologies of precarious employment and their relationships with mental well-being in Korean wageworkers: A latent class analysis based on the Korean Working Conditions Survey (2020–2021)
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Special Article

Problems and suggested improvement plans for occupational health service in Korea: Dongmug Kang; Ann Occup Environ Med 2023;35:e10. Published online May 11, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e10

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

The purpose of this paper was to review the problems relating to Korea’s occupational health services and suggest ways to improve them. Korea can be classified as a welfare state type of conservative corporatism partially interwoven with liberalism. While experiencing compressed economic growth, the economic sectors of developed (excess areas) and developing (deficient areas) countries are interwoven. Therefore, it is necessary to perfect conservative corporatism along with a complementary reinforcement of liberal contents and to apply a multilayered approach focusing on complementing the deficient areas. It is essential to form a national representative indicator related to occupational health, and a strategy for selection and concentration is needed. The proposed central indicator is the occupational health coverage rate (OHCR), which is the number of workers who have applied for mandatory occupational health services under the Occupational Safety and Health Act in the numerator with the total working population in the denominator. This paper proposes ways to raise the OHCR, which is currently at the level of 25%–40%, to 70%–80%, which is the level of Japan, Germany, and France. To achieve this target, it is necessary to focus on small businesses and vulnerable workers. This is an area of market failure and requires the active input of community-oriented public resources. For access to larger workplaces, the marketability of services should be strengthened and personal intervention using digital health resources should be actively attempted. Taking a national perspective, work environment improvement committees with tripartite (labor, management, and government) participation for improvement of the working environment need to be established at the center and in the regions. Through this, prevention funds linked to industrial accident compensation and prevention could be used efficiently. A national chemical substance management system must be established to monitor the health of workers and the general public.

한국의 직업보건서비스의 문제점과 개선 방안
한국의 직업보건서비스의 문제점을 살펴보고 개선 방안을 제시하고자 하였다. 발간된 논문과 보고서 및 2022년의 산업보건환경 변화에 따른 대응방안 연구(정책포럼)1의 결과를 중심으로 조사하였다. 한국은 보수적조합주의를 근간으로 한 자유주의가 가미된 형태의 복지국가유형으로 분류할 수 있고, 압축적 경제성장을 경험하면서 선진국과 개발도상국의 영역이 섞여 있어 과잉과 결핍이 혼재되어 있다. 따라서 한국의 직업보건서비스의 발전을 위해서는 보수조합주의적 완성도를 높이면서 부수적으로 자유주의적 내용을 보완하여야 하며, 동일한 발전단계에 대한 단일한 접근법 보다는 결핍영역에 대한 보완을 중심으로 한 중층적 접근법이 필요하다. 직업보건관련 중심적 지표를 형성하고 이에 대한 선택과 집중전략이 필요하며, 중심지표로는 현재 25~40% 수준에 머물러 있는 직업보건 적용율을 독일, 프랑스, 일본 수준인 70~80% 수준으로 제고하는 것을 목표로 삼기를 제안한다. 이렇게 하기 위해서는 소규모 사업장과 취약한 노동자에 대해 집중하여야 하며, 이 영역은 시장실패영역으로서 지역중심의 공공자원의 적극적 투입이 필요한데, 전국 보건소 숫자인 256개 정도의 지역에 지역 직업보건 지원센터를 건립할 것을 제안한다. 중규모 이상의 사업장에 대한 접근으로는 서비스의 수요에 기반한 시장성을 강화하고 디지털헬스를 이용한 개인영역의 중재를 적극 시도하여야 한다. 전국적차원에서 사업장 작업환경개선과 중재를 위한 노사정이 참여하는 작업환경개선위원회를 중앙과 지역에 설치하고, 이를 통해 산재보상과 예방을 연계한 예방기금을 효율적으로 사용하도록 한다. 국가 차원의 화학물질 관리체계를 구축하고, 근로자와 일반국민의 건강을 모니터링할 수 있어야 한다

Citations

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Precarious employment and the onset of depressive symptoms and problematic alcohol use in middle-aged or older workers: A Korean longitudinal study (2006–2022)
Seong-Uk Baek, Yu-Min Lee, Jong-Uk Won, Jin-Ha Yoon
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Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
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Association between precarious employment and the onset of depressive symptoms in men and women: a 13-year longitudinal analysis in Korea (2009–2022)
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Original Article

Association between insomnia and absenteeism or presenteeism among Korean employees: JongHyun Hwang, Seong-Sik Cho, Jung Il Kim; Ann Occup Environ Med 2022;34:e41. Published online December 6, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e41

Abstract Abstract in Korean PDF PubReader ePub

Background

In Korea, few studies clarify insomnia and its association and absenteeism or presenteeism. Therefore, this study aims to examine the association between insomnia and absenteeism/presenteeism using the sixth Korean Working Conditions Survey.

Methods

Insomnia was evaluated by the Minimal Insomnia Symptoms Scale (MISS). Absenteeism and presenteeism were assessed by asking if the employee had experienced absence or working despite being ill for the prior 12 months at the point of the survey. Multiple logistic analyses were conducted to explore insomnia and its association with absenteeism and presenteeism.

Results

The odds ratios of insomnia for absenteeism and presenteeism were 3.48 (95% confidence interval [CI]: 2.76–4.39) and 3.68 (95% CI: 3.18–4.26) in the fully adjusted model. As the MISS scores increased, absenteeism and presenteeism showed the increasing trend that odd ratios increased accordingly from the first to the fourth quartile.

Conclusions

This study observed that insomnia was related to both absenteeism and presenteeism among Korean employees.

한국 근로자에서의 불면증과 결근(absenteeism) 및 프리젠티즘(presenteeism) 간 연관성 연구.
목적
불면증은 결근 및 프리젠티즘을 유발하는 위험 인자로 알려져 있으나 한국의 노동자들에서의 불면증과 결근 및 프리젠티즘 간의 연관성을 연구한 경우는 드물다. 따라서, 이 연구는 한국 노동자들에서의 불면증과 결근 및 프리젠티즘간의 연관성을 조사하였다.
방법
본 연구는 제6차 한국 취업자 근로환경조사 자료를 활용하였다. 불면증은 최소 불면증 증상 척도(MISS)를 사용하여 평가하였으며, 결근 및 프리젠티즘은 조사시점에서 1년동안의 결근 경험 및 건강상 문제가 있음에도 출근한 경험에 대해 질문함으로써 평가하였다. 불면증과 결근 및 프리젠티즘 간의 연관성을 분석하기 위해 다중 로지스틱 회귀분석을 수행하였다.
결과
보정된 모형에서 불면증과 결근 및 프리젠티즘과의 오즈비는 각각 3.48(95% CI: 2.76 - 4.39), 3.68(95% CI: 3.18 - 4.26) 이었다. 최소 불면증 증상 척도 점수가 증가할 수록 결근 및 프리젠티즘이 증가하는 경향을 보였다.
결론
본 연구를 통해 불면증과 결근 및 프리젠티즘의 연관성을 확인할 수 있었다. 이러한 결과는 근로자들의 수면 건강을 위한 추가적인 연구와 효과적인 수면 건강 중재 프로그램의 개발 및 도입이 필요할 수 있다.

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Yoon-Soo Jang, Jae-Han Lee, Na-Rae Lee, Dong-Woo Kim, June-Hee Lee, Kyung-Jae Lee
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Original Article

Relationship between chronotype and depressive symptoms among newly hired hospital nurses in the Republic of Korea: Semi Lee, Han-Na Jung, Jia Ryu, Woo-Chul Jung, Yu-Mi Kim, Hyunjoo Kim; Ann Occup Environ Med 2022;34:e32. Published online October 31, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e32

Abstract Abstract in Korean PDF PubReader ePub

Background

This study was conducted to examine the relationship between chronotype and depressive symptoms to provide grounded knowledge in establishing nurses’ health promotion strategies.

Methods

The subjects of this study were 493 newly hired nurses working in 2 general hospitals within the university from September 2018 to September 2020. Sociodemographic and work-related characteristics were collected from a medical examination database and a self-reported questionnaire. These included sex, age, marital status, living situation, education level, alcohol consumption, physical activity, prior work experience before 3 months, workplace, and departments. To analyze the associations between the chronotype and depressive symptoms, multiple logistic regression analyses were performed to calculate odds ratios (ORs).

Results

Among participants, 9.1% had depressive symptoms and 16.4% had insomnia. The subjects are divided into morningness (30.2%), intermediate (48.7%), and eveningness (21.1%). The multiple logistic regression analysis controlling for age, living status, education level, alcohol consumption, physical activity, workplace, prior work experience before 3 months, and insomnia, revealed that the OR of depressive symptoms in the eveningness group was 3.71 (95% confidence interval [CI]: 1.50–9.18) compared to the morningness group, and the R² value was 0.151. It also can be confirmed that insomnia symptoms have a statistically significant effect on depressive symptoms (OR: 2.16, 95% CI: 1.03–4.52).

Conclusions

Our findings suggest that evening-type nurses are more likely to have depression than morning-type nurses. We should consider interventions in a high-risk group such as the evening type nurses to reduce depressive symptoms in nurses.

신입 간호사에서 일주기리듬 유형과 우울 증상의 관련성
목적
이 연구는 간호사의 건강증진 전략 수립에 기초 지식을 제공하기 위해 일주기리듬 유형(크로노타입)과 우울 증상의 관련성을 살펴보기 위해 수행되었다.
방법
연구대상은 2018년 9월부터 2020년 9월까지 2개 대학병원에 근무하는 신입간호사 493명이었다. 사회인구학적 특성과 업무관련 특성은 건강검진 데이터베이스와 자기보고식 설문지를 통해 성별, 연령, 결혼 여부, 생활 상황, 교육 수준, 음주, 신체 활동, 3개월 내 업무 경험, 직장 및 부서 등에 대한 정보를 수집하였다. 일주기리듬 유형과 우울 증상 간의 연관성을 분석하기 위해 연령, 생활수준, 학력, 음주, 신체활동, 직장, 직장경력, 불면증 등을 통제한 다중 로지스틱 회귀 분석을 수행하였다.
결과
참가자의 9.1%가 우울 증상이 있었고, 16.4%가 불면 증상이 있었다. 일주기리듬 유형은 아침형(30.2%), 중간형(48.7%), 저녁형(21.1%)으로 구분하였다. 앞서 언급한 혼란 변수를 모두 통제한 다중 로지스틱 회귀분석 결과 저녁시간 집단의 우울 증상의 오즈비는 3.71(95% C.I. 1.50- 9.18) 아침형 그룹과 비교하여 R 제곱값은 0.151이었다. 또한 불면증 증상도 우울 증상에 통계적으로 유의한 영향을 미치는 것을 확인하였다 (OR = 2.16(95% C.I. 1.03-4.52)).
결론
우리 연구는 저녁형 간호사가 아침형 간호사보다 우울증에 걸릴 확률이 더 높다는 점을 시사한다. 간호사의 우울 증상을 줄이기 위해 저녁형 일주기리듬유형을 가진 간호사와 같은 고위험군에 대한 개입을 고려해야 한다.

Citations

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Relationship between mid-sleep time and depression, health-related quality of life, and sleep deprivation in the 2018 Korea Community Health Survey
Mee-Ri Lee, Sung Min Jung, Seung Hee Choi, Hyeonji Hwang, Youngs Chang, Young Hwangbo
Chronobiology International.2024; 41(1): 1. CrossRef
Factors associated with chronotype, job burnout, and perceived stress among nurses in Chinese tertiary hospitals: A multicenter cross-sectional study
Lijun Li, Xingxing Wang, Jian Zhou, Min Liu, Sha Wang, Yi Zhou, Yuxuan Li, Yue Kang, Jianfei Xie, Andy S. K. Cheng
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Mediation analysis of chronotype, sleep-related factors, and depressive symptoms among workers: a cross-sectional study
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Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef

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Original Article

Analyzing decline in quality of life by examining employment status changes of occupationally injured workers post medical care: Won-Tae Lee, Sung-Shil Lim, Min-Seok Kim, Seong-Uk Baek, Jin-Ha Yoon, Jong-Uk Won; Ann Occup Environ Med 2022;34:e17. Published online July 18, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e17

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

This study aimed to investigate the decline in quality of life (QOL) by examining changes in the employment status of workers who had completed medical treatment after an industrial accident.

Methods

This study utilized the Panel Study of Worker’s Compensation Insurance cohort (published in October 2020) containing a sample survey of 3,294 occupationally injured workers who completed medical care in 2017. We divided this population into four groups according to changes in working status. A multivariate logistic regression model was utilized for evaluating QOL decline by adjusting for the basic characteristics and working environment at the time of accident. Subgroup analysis evaluated whether QOL decline differed according to disability grade and industry group.

Results

The QOL decline in the “maintained employment,” “employed to unemployed,” “remained unemployed,” and “unemployed to employed” groups were 15.3%, 28.1%, 20.2%, and 11.9%, respectively. The “maintained employment” group provided a reference. As a result of adjusting for the socioeconomic status and working environment, the odds ratios (ORs) of QOL decline for the “employed to unemployed” group and the “remained unemployed” group were 2.13 (95% confidence interval [CI], 1.51–3.01) and 1.47 (95% CI, 1.13–1.90), respectively. The “unemployed to employed” group had a non-significant OR of 0.76 (95% CI, 0.54–1.07).

Conclusions

This study revealed that continuous unemployment or unstable employment negatively affected industrially injured workers’ QOL. Policy researchers and relevant ministries should further develop and improve “return to work” programs that could maintain decent employment avenues within the workers’ compensation system.

한국 산업재해 근로자의 요양 종료 후 고용상태의 변화와 삶의 질 저하와의 관계 분석
목적
산업재해 근로자의 요양 이후 직업 복귀와 삶의 질에 대한 사안은 이전부터 큰 사회적 관심사였다. 하지만 요양 종결 이후의 경제활동상태의 종적인 변화와 삶의 질과 연관시킨 연구는 거의 없다. 본 연구는 산업재해 후 요양을 마친 근로자의 고용상태 변화를 조사하여 삶의 질(QOL) 저하를 조사하는 것을 목적으로 하였다.
방법
본 연구는 2017년에 요양을 마친 3,294명의 산업재해 근로자를 대상으로 한 산재보험패널조사의 자료를 활용하였다. 우리는 이 산재노동자 인구를 근로 상태의 변화에 따라 ”고용 상태 유지”, ”고용에서 미취업 상태”, ”미취업 상태 유지” 및 ”미취업에서 고용 상태”의 4개 그룹으로 나누었다. 다변량 로지스틱 회귀모형은 기본 특성과 산업재해 당시의 작업환경을 보정하여 삶의 질 저하를 평가하는데 활용하였다. 하위집단 분석은 장애등급과 산업군에 따라 삶의 질 저하가 다른 지를 평가하였다.
결과
“고용 상태 유지”, ”고용에서 미취업 상태”, ”미취업 상태 유지” 및 ”미취업에서 고용 상태” 그룹의 삶의 질 감소 비율은 각각 15.3%, 28.1%, 20.2%, 그리고 11.9%이었다. 고용 상태를 유지한 그룹을 기준으로 하였을 때 사회경제적 상태와 근로환경을 보정한 결과 “고용에서 미취업 상태” 집단과 “미취업 상태 유지” 집단의 삶의 질 하락의 오즈비는 2.13 (95% 신뢰구간: 1.51–3.01)과 1.47로 분석되었다. (95% 신뢰구간: 1.13–1.90). "미취업에서 고용 상태" 그룹은 유의하지 않은 오즈비 0.76(95% 신뢰구간: 0.54–1.07)을 가졌다.
결론
본 연구에서는 지속적인 실업과 불안정한 고용이 산업재해 근로자의 삶의 질에 부정적인 영향을 미치는 것으로 나타났다. 또한 높은 장해등급, 건설업종의 경우 위험성이 더 높다. 정책 연구자와 관련 부처는 산업재해 보상 시스템 내에서 적절한 고용 수단을 유지할 수 있는 프로그램의 개발 노력이 필요함을 시사한다.

Citations

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Work Performance Among Workers without Disabilities after Industrial Accidents: A Longitudinal Study
Chong Min Hong
The Open Public Health Journal.2024;[Epub] CrossRef
Self-Esteem Trajectories After Occupational Injuries and Diseases and Their Relation to Changes in Subjective Health: Result From the Panel Study of Workers’ Compensation Insurance (PSWCI)
Seong-Uk Baek, Won-Tae Lee, Min-Seok Kim, Myeong-Hun Lim, Jin-Ha Yoon, Jong-Uk Won
Journal of Korean Medical Science.2023;[Epub] CrossRef
Macro Aspect of Quality of Life Can Be Affected by Occupational Accidents, a Macro Vision for Managers
Farahnaz Khajehnasiri, Vida Zaroushani
Journal of Occupational Health and Epidemiology.2023; 12(3): 130. CrossRef
Prevalence and Consequences of Verbal Aggression among Bank Workers: A Survey into an Italian Banking Institution
Daniela Acquadro Maran, Antonella Varetto, Cristina Civilotti, Nicola Magnavita
Administrative Sciences.2022; 12(3): 78. CrossRef

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Original Article

Mental health symptoms among dependent contractors in Korea: a cross-sectional study based on the Fifth Korean Working Condition Survey: Seong-Uk Baek, Sung-Shil Lim, Sehyun Yun, Won-Tae Lee, Min-Seok Kim, Jin-Ha Yoon, Jong-Uk Won; Ann Occup Environ Med 2022;34:e1. Published online February 10, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e1

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Recently, there has been a call to improve the holistic welfare of dependent contractors (DCs). Thus, our study examined the relationship between DCs and mental health symptoms and how this relationship was modified by age, sex, and income status of workers.

Methods

A total of 27,980 workers from the Fifth Korean Working Conditions Survey are included in our study. The participants who reported having depression or anxiety over the last 12 months are defined those who had mental health symptoms. We performed exact matching for age group and sex, followed by conditional logistic regression with survey weights. Finally, stratified analyses by age, sex and income level were conducted.

Results

DCs were found to be at increased risk of depression/anxiety compared to other workers. The odds ratio (OR) is 1.52 (95% confidence interval [CI]: 1.06–2.17). In the stratified analyses, vulnerable groups were middle-aged (OR [95% CI]: 1.68 [1.10–2.54]), female (OR [95% CI]: 1.85 [1.20–2.84]), and low-income (OR [95% CI]: 3.18 [1.77–5.73]) workers.

Conclusions

Our study's results reinforce those of other studies that show that DCs are at greater risk of experiencing mental health issues than other workers and that and this risk is greater for middle-aged, female, and low-income workers. These results suggest that appropriate policy efforts should be made to improve the psychological well-being of DCs.

한국의 특수형태근로종사자의 정신건강증상: 제5차 한국근로실태조사에 근거한 단면 연구
목적
최근 특수형태근로종사자의 법적 지위와 근로환경에 대한 사회적 관심이 증가하고 있다. 우리의 연구 목표는 특수형태근로종사자와 정신 건강 증상 사이의 관계를 조사하며,이 관계가 근로자의 연령, 성별 및 소득수준에 따라 구분된 층화 그룹에 따라 어떻게 변화되는지를 조사하는 것이다.
방법
본 연구에는 제5차 한국 근로 환경 조사의 총 27,980명의 임금근로자가 포함되었다. 정신건강증상을 가진 근로자는 지난 12개월 이내 우울증 혹은 불안감으로 인한 건강장애를 경험했다고 대답한 근로자로 정의되었다. 참여 근로자를 연령 그룹과 성별에 따라 매칭하였으며, 설문 조사 가중치를 사용한 조건부 로지스틱 회귀를 수행하여 분석하였다. 연령, 성별, 소득수준에 따라 그룹별로 층화분석이 추가적으로 진행되었다.
결과
특수형태근로종사자로서의 지위는 정신 건강 증상의 위험 증가와 관련이 있었다 (오즈비 1.52, 95% 신뢰구간: 1.06-2.17). 층화분석에서 취약 그룹은 40대와 50대의 중년 (오즈비 1.68, 95% 신뢰구간: 1.10-2.54), 여성 (오즈비 1.85, 95% 신뢰구간: 1.20-2.84) 및 저소득층 (오즈비 3.18, 95% 신뢰구간: 1.77-5.73)에 속하는 근로자로 분석되었다.
결론
우리의 연구는 특수형태근로자로서 일하는 것이 그 자체로 불안감이나 우울감과 관련이 있다는 이전 연구 결과를 재확인하였다. 또한 중장년층, 여성, 저소득층에서 그 영향이 더 크다는 사실도 처음으로 밝혀냈다. 본 연구는 특수형태근로종사자의 정신 건강을 보호하기 위한 적절한 정책적 노력이 필요함을 시사한다.

Citations

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Association between precarious employment and the onset of depressive symptoms in men and women: a 13-year longitudinal analysis in Korea (2009–2022)
Seong-Uk Baek, Jong-Uk Won, Yu-Min Lee, Jin-Ha Yoon
Epidemiology and Psychiatric Sciences.2024;[Epub] CrossRef
Temporary Employment Is Associated with Poor Dietary Quality in Middle-Aged Workers in Korea: A Nationwide Study Based on the Korean Healthy Eating Index, 2013–2021
Seong-Uk Baek, Myeong-Hun Lim, Yu-Min Lee, Jong-Uk Won, Jin-Ha Yoon
Nutrients.2024; 16(10): 1482. CrossRef
Association of precarious employment with depressive symptoms and suicidal ideation among female workers: Findings from a nationwide longitudinal study in Korea
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Journal of Affective Disorders.2024; 351: 931. CrossRef
Characteristics and Socio-Demographic Distribution of Precarious Employment Among Korean Wage Workers: A Proposition of Multidimensional Approach Using a Summative Score
Seong-Uk Baek, Min-Seok Kim, Myeong-Hun Lim, Taeyeon Kim, Jin-Ha Yoon, Jong-Uk Won
Safety and Health at Work.2023; 14(4): 476. CrossRef

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Opinion

The use of ChatGPT in occupational medicine: opportunities and threats: Chayma Sridi, Salem Brigui; Ann Occup Environ Med 2023;35:e42. Published online October 23, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e42

Abstract PDF PubReader ePub

ChatGPT has the potential to revolutionize occupational medicine by providing a powerful tool for analyzing data, improving communication, and increasing efficiency. It can help identify patterns and trends in workplace health and safety, act as a virtual assistant for workers, employers, and occupational health professionals, and automate certain tasks. However, caution is required due to ethical concerns, the need to maintain confidentiality, and the risk of inconsistent or inaccurate results. ChatGPT cannot replace the crucial role of the occupational health professional in the medical surveillance of workers and the analysis of data on workers’ health.

Citations

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Correspondence on “The use of ChatGPT in occupational medicine: opportunities and threats”
Hinpetch Daungsupawong, Viroj Wiwanitkit
Annals of Occupational and Environmental Medicine.2024;[Epub] CrossRef
Current Status of ChatGPT Use in Medical Education: Potentials, Challenges, and Strategies
Tianhui Xu, Huiting Weng, Fang Liu, Li Yang, Yuanyuan Luo, Ziwei Ding, Qin Wang
Journal of Medical Internet Research.2024; 26: e57896. CrossRef
ChatGPT in Occupational Medicine: A Comparative Study with Human Experts
Martina Padovan, Bianca Cosci, Armando Petillo, Gianluca Nerli, Francesco Porciatti, Sergio Scarinci, Francesco Carlucci, Letizia Dell’Amico, Niccolò Meliani, Gabriele Necciari, Vincenzo Carmelo Lucisano, Riccardo Marino, Rudy Foddis, Alessandro Palla
Bioengineering.2024; 11(1): 57. CrossRef

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Original Article

Relationship between shellfish consumption and urinary phthalate metabolites: Korean National Environmental Health Survey (KoNEHS) cycle 3 (2015-2017): Jisoo Kang, Seong-yong Cho, Jinseok Kim, Seongyong Yoon, Jong-min An, Gayoung Kim, Si young Kim; Ann Occup Environ Med 2023;35:e2. Published online February 6, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e2

Abstract Abstract in Korean PDF PubReader ePub

Background

Phthalates are endocrine disrupting chemicals that are widely used in the production of items of daily life such as in polyvinylchloride plastics, insecticides, and medical devices. This study aimed to determine the association between phthalate exposure and shellfish consumption using data from the Korean National Environmental Health Survey (KoNEHS) cycle 3 (2015–2017), which is a nationally representative survey.

Methods

In this study, we analyzed the KoNEHS cycle 3 data of 3,333 (1,526 men and 1,807 women) adults aged more than 19 years. Data related to the variables of sociodemographic factors, health-related behaviors, dietary factors, seafood consumption frequency, and urinary phthalate metabolites concentrations were collected. The concentrations of urinary phthalate metabolites of all the participants were divided into quartiles to define high and low concentration groups based on the 75th percentile concentration. A χ² test was conducted to analyze the distribution of independent variables. To analyze the relationship between shellfish consumption and phthalate exposure, the odds ratios (ORs) were calculated using logistic regression analysis.

Results

Total adults with shellfish consumption frequency of over once a week showed the following adjusted ORs for high concentrations of the following metabolites compared with the group that consumed shellfish once a week or less: 1.43 (95% confidence interval [CI]: 1.01–2.06) for mono-(2-ethyl-5-oxohexyl) phthalate (MEOHP), 1.43 (95% CI: 1.01–2.03) for mono-(2-ethyl-5-carboxypentyl) phthalate (MECPP), 1.57 (95% CI: 1.10–2.24) for ∑di-2-ethylhexyl phthalate (∑DEHP), 2.01 (95% CI: 1.46–2.77) for mono-carboxyoctyl phthalate (MCOP), 1.56 (95% CI: 1.11–2.18) for mono-carboxy-isononly phthalate (MCNP), and 2.57 (95% CI: 1.85–3.56) for mono (3-carboxypropyl) phthalate (MCPP).

Conclusions

The concentrations of urinary phthalate metabolites (MEOHP, MECPP, ∑DEHP, MCOP, MCNP, and MCPP) were higher in adults with a higher frequency of shellfish consumption.

국민환경보건 기초조사 제3기(2015-2017) 자료를 이용한 조개류 섭취와 요중 프탈레이트 대사체간의 관계
목적
프탈레이트(phthalate)는 내분비계 장애물질(endocrine disrupting chemicals, EDCs)로서, 일상생활에서 가소제, 살충제, 의료기기 등으로 광범위하게 사용되고 있다. 프탈레이트는 해양 생태계에서 널리 발견되며, 조개류는 해양생태계오염의 대표적인 지표로 사용된다. 현재까지 해양 생태계의 프탈레이트의 오염에 대한 다양한 연구가 수행되고 있으나 국내에서 프탈레이트 노출과 조개류 섭취와 관련된 연구는 아직 이루어진 바가 없다. 따라서 본 연구에서는 우리나라 인구를 대표하는 자료인 국민환경보건 기초조사 제3기(2015-2017) 자료를 이용하여 요중 프탈레이트 대사체와 조개류 섭취와의 연관성을 분석하고자 했다.
방법
본 연구는 국민환경보건 기초조사 제3기(2015-2017) 자료를 이용하여 만 19세 이상 성인 3,333명(남자1,526명과 여자1,807명)을 대상으로 진행하였다. 사회인구학적 변수 및 건강행태 관련 변수 및 식이 요인과 해산물의 섭취 빈도, 요중 프탈레이트 대사체 농도를 변수로 두어 각 변수 간의 분포 차이를 분석하였다. 로지스틱 회귀분석을 사용하여 조개류 섭취빈도에 따라 요중 프탈레이트 대사체 고농도군에 속할 OR값을 계산하였다.
결과
조개류 섭취의 경우 주 1회 초과군에서 MEOHP의 고농도군에 해당될 adjusted ORs은 1.43(95%CI: 1.01-2.06), MECPP 1.43(95%CI: 1.01-2.03), ∑DEHP 1.57(95%CI: 1.10-2.24), MCOP 2.01(95%CI: 1.46-2.77), MCNP 1.56(95%CI: 1.11-2.18), MCPP 2.57(95%CI: 1.85-3.56)으로 조사되었다.
결론
성인에서 조개류 섭취 빈도가 많을수록 요중 프탈레이트 대사체(MEOHP, MECPP, ∑DEHP, MCOP, MCNP, MCPP) 농도가 높았다.

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Original Article

The relationship between visual display terminal usage at work and symptoms related to computer vision syndrome: Soonsu Shin, Eun Hye Yang, Hyo Choon Lee, Seong Ho Moon, Jae-Hong Ryoo; Ann Occup Environ Med 2023;35:e1. Published online January 9, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e1

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Although it is well known that the usage of visual display terminal (VDT) at the workplace causes computer vision syndrome (CVS), previous studies mainly focused on computer use and the health of white-collar workers. In this study, we explored the relationship between the usage of VDT including various devices, and symptoms related to CVS in a large population including pink-collar workers and blue-collar workers.

Methods

21,304 wage workers over the age of 20 years were analyzed from the 6th Korean Working Conditions Survey. To investigate the association between VDT use at work and symptoms related to CVS among wage workers, odds ratios (ORs) and 95% confidence interval (CI) were calculated by multivariate logistic regression models.

Results

In the group with the highest VDT usage at work, the OR of headache/eyestrain was 2.16 (95% CI: 1.86–2.52). The OR of suspected CVS patients was significantly increased in the highest group of usage of VDT at work (OR: 1.69; 95% CI, 1.39–2.06). Compare with the reference group, the OR for headache/eyestrain in the highest group of VDT usage was 2.81 (95% CI: 2.13–3.70) in white-collar workers, 1.78 (95% CI: 1.32–2.40) in pink-collar workers, and 1.59 (95% CI: 1.18–2.15) in blue-collar workers.

Conclusions

We observed a relationship in which the use of VDT in the workplace increases the risk of headache/eyestrain regardless of occupational classification. Our findings emphasize the importance of paying attention to the health of VDT workers and making plans to improve their working conditions.

영상표시단말기 작업과 컴퓨터 시각 증후군의 증상간의 관계
목적
다양한 산업과 직군에서 컴퓨터만이 아니라 스마트폰, 태블릿 등의 영상표시단말기(Video display terminal)의 사용이 증가하고 있다. 영상표시 단말기를 사용하는 사람들은 흔히 눈의 긴장, 두통, 상지 통증 등의 증상을 겪으며 이러한 증상들의 집합은 컴퓨터 시각 증후군(Computer vision syndrome)이라고 정의되어 왔다. 컴퓨터 시각 증후군에 대한 이전 연구들은 특정 직업만을 대상으로 한 연구가 많았다. 또한, 지금까지 컴퓨터 이외의 다른 기기들을 포함하여 컴퓨터 시각증후군에 대해 조사한 연구는 없었다. 본 연구에서는 제6차 근로환경조사를 통하여 작업 중 다양한 영상표시단말기의 사용과 컴퓨터 시각 증후군의 증상들의 관계에 대해 연구해보았다. 인구집단을 화이트칼라 근로자, 핑크칼라 근로자, 블루칼라 근로자로 나누어서 분석하여 영상표시단말기 사용이 근로자들의 건강에 미치는 영향을 파악해보고자 한다.
방법
이번 연구에서는 6차 근로환경조사에 참여한 인원 중 20세 이상의 임금 근로자 21,304명을 연구 참여자로 포함시켰다. 이들의 작업 중 영상표시단말기 사용을 적음, 보통, 많음 세 군으로 나누어 독립변수로 사용하였고, 지난 12개월 동안 두통/눈 긴장이 있는지, 상지의 통증이 있는지, 혹은 둘 다 있는 경우 컴퓨터 시각 증후군 의심환자로 정의하여 종속변수로 사용하여 로지스틱 회귀분석을 진행하였다. 통계적 유의수준은 P<0.05 으로 고려하였다.
결과
로지스틱 회귀분석에서 영상표시 단말기 사용이 많았던 군에서 적었던 군 보다 두통/눈 긴장의 오즈비(Odds ratio)가 2.16 (95% 신뢰구간: 1.86-2.52)로 높게 나타났다. 컴퓨터 시각증후군 의심환자는 영상표시 단말기 사용이 많았던 군에서 적었던 군과 비교해 오즈비가 1.69 (95% 신뢰구간: 1.39-2.06)로 유의미하게 높았다. 기준군과 비교하여 영상표시단말기의 사용이 많았던 군의 두통/눈 긴장의 오즈비는 화이트칼라 근로자에서 2.81 (95% 신뢰구간: 2.13–3.70), 핑크칼라 근로자에서 1.78 (95% 신뢰구간: 1.32–2.40) 및 블루칼라 근로자에서 1.59 (95% 신뢰구간: 1.18–2.15)이었다.
결론
영상표시단말기의 사용은 근로자들에게서 두통/눈긴장의 위험을 높이며, 컴퓨터 시각 증후군 의심환자의 위험을 높였다. 화이트칼라 근로자뿐만 아니라 핑크칼라 근로자, 블루칼라 근로자에서도 영상표시단말기의 사용이 많은 군에서 두통/눈긴장의 위험이 증가하였다. 이러한 결과는 영상표시단말기 취급근로자들의 건강에 주의를 기울여야함을 시사한다.

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Evaluation of PVD exposure and its influence on visual fatigue in the administrative staff of a public hospital in Riobamba - Ecuador in 2023
Abigail Torres, Santiago Salazar
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Association between receiving work communications outside of work hours via telecommunication devices and work-related headaches and eyestrain: a cross-sectional analysis of the 6th Korean Working Conditions Survey
Yoon-Soo Jang, Jae-Han Lee, Na-Rae Lee, Dong-Woo Kim, June-Hee Lee, Kyung-Jae Lee
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef

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Special Article

Standards for recognition and approval rate of occupational cerebro-cardiovascular diseases in Korea: Ui-Jin Kim, Won-Jun Choi, Seong-Kyu Kang, Wanhyung Lee, Seunghon Ham, Junhyeong Lee, Yongho Lee, Eunseun Han, Sanghyuk Lee, Yongkyu Kim, Inah Kim; Ann Occup Environ Med 2022;34:e30. Published online October 25, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e30

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Although working hours have decreased in Korea, they are still high compared to that of other countries. In Korea, cardiovascular and cerebrovascular diseases (CCVDs) related to overwork in Korea continually occur, and the social burden from overwork is estimated to be high. This study investigated the amendment of regulations affecting the approval rate of occupational CCVDs.

Methods

The change in approval rate of occupational CCVDs and related regulations were investigated using the Act and public notice on the standards for recognition of occupational CCVDs and the yearbooks of the Ministry of Employment and Labor. The CCVD mortality was estimated using data on the number of deaths according to the cause of death, the number of employed people, and resident registration population aged 15–64 years. The cumulative mortality of CCVDs was estimated using the Kaplan-Meier method.

Results

Since the establishment of the standards for recognition in Korea in 1982, the scope of occupational diseases has been expanded to include intracerebral hemorrhage, subarachnoid hemorrhage, cerebral infarction, myocardial infarction, and aortic dissection. In 2013, the concept of working hours was introduced in chronic overwork. The approval rate of occupational CCVDs was 44.7% in 2006, which decreased to 12.9% in 2011. After the improvement of related regulations, the approval rate increased to 41.3% in 2018. From 2000 to 2017, the CCVD mortality of both the unemployed and employed tended to decrease, and their cumulative CCVD mortalities were 549.3 and 319.7 per 100,000 people, respectively.

Conclusions

CCVDs are recognized as occupational diseases in Korea. The amendments to the standards for recognition, the introduction of the Occupational Disease Adjudication Committee, the principle of presumption, and the reduction of working hours have changed the approval rate of occupational CCVDs. A strategic approach is needed to further reduce the incidence of CCVDs.

한국의 직업성 뇌심혈관계 질환에 대한 연구
목적
근로기준법 개정 적용 사업장 확대로 우리나라의 근무시간은 지속적으로 감소 추세에 있으나 타 국가에 비하면 여전히 높은 수준이다. 우리나라의 과로 관련 뇌심혈관계 질환은 지속적으로 나타나고 있으며 과로로 인한 사회적 부담이 클 것으로 추정된다. 이번 연구에서는 우리나라 뇌심혈관계 질환의 업무상 질병 승인율 변화 및 관련된 제도의 변화를 요약하고자 하였다.
방법
뇌심혈관계 질환 업무상 질병 인정기준에 관한 법령 및 고시와 고용노동부 사업연보를 통해 뇌심혈관계 질환 산재 승인율 변화 및 관련 규정을 조사하였다. 국가통계포털의 사망 원인, 취업자 수 및 주민등록인구 자료를 사용하여 우리나라의 뇌심혈관계 질환 사망자수, 사망률을 조사하고 Kaplan-Meier 방법을 통해 누적사망률을 산출하였다.
결과
1982년 우리나라에서 뇌졸중과 급성심장사에 대한 업무상 질병 인정기준이 제정된 이후 수차례 개정을 거쳐 인정 대상 질병 범위가 뇌실질내출혈, 지주막하출혈, 뇌경색, 심근경색증, 해리성대동맥류로 확대되었다. 2013년 만성과로 인정기준에 근무시간 개념이 도입되었다. 뇌심혈관계 질환 업무상 질병 승인율은 2006년 44.7%였다가 2011년 12.9%건까지 감소하였다. 제도적인 개선 후 승인율은 2018년 41.3%까지 증가하였다. 2000년부터 2017년까지 뇌심혈관계 질환 사망률은 미취업자 및 취업자 모두에서 감소하는 경향을 보였으며 이 기간 동안 미취업자 및 취업자의 뇌심혈관계 질환 누적사망률은 각각 10만 명당 549.3명 및 319.7명이었다.
결론
우리나라는 뇌심혈관계 질환을 업무상 질병으로 받아들이고 있다. 뇌심혈관계 질환 업무상 질병 승인율은 업무상 질병 인정기준 개정, 업무상질병판정위원회 제도 도입, 추정의 원칙 도입 및 평균 근무시간 감소 등에 의해서 변동되었다. 뇌심혈관계 질환은 그 경제적 부담이 크고 예방 가능한 질환으로 지속적인 예방 사업 등 발병 예방을 위한 전략적 접근이 필요하다.

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Association between long working hours and the development of suicidal ideation among female workers: An 8-year population-based study using the Korean Longitudinal Survey of Women & Family (2012–2020)
Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
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Seong-Uk Baek, Jong-Uk Won, Yu-Min Lee, Jin-Ha Yoon
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Self-Esteem Trajectories After Occupational Injuries and Diseases and Their Relation to Changes in Subjective Health: Result From the Panel Study of Workers’ Compensation Insurance (PSWCI)
Seong-Uk Baek, Won-Tae Lee, Min-Seok Kim, Myeong-Hun Lim, Jin-Ha Yoon, Jong-Uk Won
Journal of Korean Medical Science.2023;[Epub] CrossRef

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Original Article

The effect of job insecurity, employment type and monthly income on depressive symptom: analysis of Korean Longitudinal Study on Aging data: Myeong-Hun Lim, Jong-Uk Won, Won-Tae Lee, Min-Seok Kim, Seong-Uk Baek, Jin-Ha Yoon; Ann Occup Environ Med 2022;34:e24. Published online September 13, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e24

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

In modern society, depression is serious issue that causes socioeconomic and family burden. To decrease the incidence of depression, risk factors should be identified and managed. Among many risk factors for depression, this study examined socioeconomic risk factors for depression.

Methods

We utilized first (2006), second (2008), and third (2010)-wave data from the Korean Longitudinal Study of Aging (KLoSA). Depressive symptom was measured with the 10-item Center for Epidemiological Studies Depression Scale, Short Form (CES-D-10) in the survey in 2008 and 2010. Three risk factors including job security, employment type and monthly income were measured in the survey in 2006. The association between risk factors and depressive symptom was analyzed by Cox proportional-hazard model.

Results

We analyzed data from 1,105 workers and hazard ratios (HRs) for 3 risk factors were significant entirely. In addition, regular worker with high income group is the most vulnerable group of poor job insecurity on depression among male workers (HR: 1.73; 95% confidence interval [CI]: 1.07–2.81). Finally, HRs for 7 groups who had at least 1 risk factor had higher HRs compared to groups who had no risk factors after stratifying 3 risk factors. In the analysis, significantly vulnerable groups were total 5 groups and the group who had highest HR was temporary/daily workers with poor job security (HR: 2.51; 95% CI: 1.36–4.64). The results concerning women, regardless of job type, were non-significant.

Conclusions

This study presented one or more risk factors among poor job security, low income, temporary/daily employment type increase hazard for depressive symptom in 2 or 4 years after the exposure. These results inform policy to screen for and protect against the risk of depression in vulnerable groups.

직업 안정성, 고용 형태, 월 소득이 우울 증상에 미치는 영향 : 고령화연구 패널조사 분석을 중심으로
목적
우울증은 전세계적으로 사회경제적 부담을 유발하는 심각한 문제로 받아들여지고 있으며 우울증의 위험요인으로는 유전적, 기질적, 환경적, 사회경제적 요인들이 알려져 있으나, 최근 코로나바이러스 감염증-19로 인한 월 소득의 감소, 직업 불안정성을 포함한 사회경제적 요인이 중요하게 다루어지고 있다. 우울증을 스크리닝하기 위한 고위험군을 선정하기 위하여 본 연구에서는 전향적 코호트 내에서 직업 안정성, 고용 형태, 월 소득을 기준으로 8가지 그룹을 나누어 각 그룹의 우울 증상 발생 위험도를 분석하고자 한다.
방법
본 연구는 전향적 코호트 연구인 제 1, 2, 3차 고령화연구패널조사 결과를 분석하였다. 2, 3차 조사에서 적어도 한 번 이상 CES-D-10 점수가 4점 이상인 경우, 우울 증상이 발생하였다고 판단하였으며, 1차 조사에서 응답한 직업 안정성 여부, 고용 형태, 월 소득의 영향을 분석하였다. 분석에는 Cox proportional-hazard regression model이 사용되었으며, 나이, 학력, 월 근무시간, 흡연 및 음주 과거력, 직무 스트레스가 보정 변수로 사용되었다.
결과
먼저, 남성 근로자에서 직업 불안정성, 임시직/일용직 근로자, 낮은 월 소득을 위험요인으로 갖는 경우, 그렇지 않은 경우보다 우울 증상의 위험도가 유의하게 증가하였다. 두 번째로, 남성 근로자에서 월 소득, 고용 형태에 따라 4개의 그룹을 나누어 각 그룹에서 직업 불안정성의 영향을 분석하였으며, 월 소득이 높은 상용직 근로자 그룹에서만 유의한 결과를 보였다. 세 번째로, 직업 안정성, 월 소득, 고용 형태를 기준으로 8개의 그룹을 나누어 각각의 우울 증상의 위험도를 분석하였다. 남성과 여성 근로자에 대하여 각각 분석하였으며, 상용직, 높은 월 소득, 높은 직업 안정성을 가진 근로자를 기준 그룹으로 선정한 후, 위험도 분석을 진행하였다. 세 가지 위험 요소 중, 낮은 직업 안정성만을 위험 요소로 갖는 그룹 (HR [95% CI]: 1.66 [1.05-2.61]), 낮은 직업 안정성과 낮은 월 소득을 갖는 그룹 (HR [95% CI]: 1.76 [1.19-2.61]), 낮은 직업 안정성과 임시직/일용직 근로자를 갖는 그룹 (HR [95% CI]: 2.51 [1.36-4.64]), 낮은 월 소득과 임시직/일용직 근로자를 갖는 그룹(HR [95% CI]: 1.81 [1.02-3.22]) 세 가지 위험 요소를 모두 갖는 그룹 (HR [95% CI]: 2.27 [1.57-3.27])에서 우울 증상의 위험도 증가가 유의하게 나타났다. 세 가지 분석 모두에서 여성 근로자의 경우, 유의미한 결과를 보이지 않았다.
결론
본 연구에서는 직업 불안정성, 임시직/일용직 고용 형태, 낮은 임금에 노출된 경우, 노출 후 2년과 4년 중 1회 이상 우울 증상 발생 위험도가 유의하게 증가한다는 결과를 도출하였다. 본 연구에서 우울 증상에 대한 위험요인이 많은 근로자일수록 우울 증상에 대한 위험도가 큰 것으로 분석되었다. 예외적으로, 임시직/일용직 근로자의 경우, 높은 월 소득의 근로자가 낮은 근로자보다 위험도가 높았다. 마지막으로 월 소득과 고용 형태를 기준으로 그룹을 나누었을 때, 직업 안정성에 의한 위험도 증가가 가장 큰 그룹은 상용직 근로자 중 월 소득이 높은 경우였다. 위 결과를 바탕으로 1개 이상의 위험요인을 갖는 고위험군을 대상으로 우울증에 대한 스크리닝 검사를 2년 간격으로 실시하는 것과 모든 근로자를 대상으로 직업 안정성에 대한 자가 조사가 필요하다는 것을 제안하였다.

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Original Article

Association between long working hours and liver enzymes: evidence from the Korea National Health and Nutrition Examination Survey, 2007–2017: Ji-Hun Song, Hyoung-Ryoul Kim, Dong-Wook Lee, Jeehee Min, Yu Min Lee, Mo-Yeol Kang; Ann Occup Environ Med 2022;34:e9. Published online May 13, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e9

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Long working hours causes several health risks, but little is known about its effects on the liver. This study aimed to examine the correlation between working hours and abnormal liver enzyme levels.

Methods

We used data from the Korea National Health and Nutrition Examination Survey IV–VII. For the final 15,316 study participant, the information on working hours was obtained through questionnaires, and liver enzyme levels, consisting of serum levels of aspartate aminotransferase (AST) and alanine aminotransferase (ALT), through blood tests. The relationship between weekly working hours and abnormal levels of liver enzymes was analyzed using multiple logistic regression, and a trend test was also conducted.

Results

In male, working ≥ 61 hours per week was significantly associated with elevated AST and ALT levels compared with working 35–52 hours per week. Even after adjusting for covariates, the odds ratios (ORs) of abnormal AST and ALT increased by 1.51 (95% confidence interval: 1.20–2.05) and 1.25 (1.03–1.52), respectively, and a dose-response relationship was observed. This association was more prominent among the high-risk group, such as those aged > 40 years, obese individuals, worker on non-standard work schedule, pink-collar workers, or temporary worker. No correlation was observed in female.

Conclusions

Long working hours are associated with abnormal liver function test results in male. Strict adherence to statutory working hours is necessary to protect workers’ liver health.

장시간 노동과 간기능 이상의 상관성: 2007-2017 국민건강영양조사 자료를 이용하여
목적
장시간 노동은 여러 가지 건강상의 위험을 초래하지만 간에 미치는 영향에 대해서는 아직까지 알려진 바가 거의 없다. 본 연구는 근로시간과 간기능 이상과의 상관관계를 알아보는 것을 목적으로 하였다.
방법
본 연구를 위해 4-7차 국민건강영양조사 자료를 사용하였다. 최종 연구참여자 15,316명을 대상으로 설문지를 통해 근무시간 정보를 얻었고 혈액검사를 통해 혈청 아스파르테이트아미노트랜스퍼라제(AST)와 알라닌아미노트랜스퍼라제(ALT)로 구성된 간효소치 정보를 얻었다. 다중 로지스틱 회귀 분석을 통해 주당 근무 시간과 간효소 이상 수치와의 관계를 분석하고 추세 검정도 함께 진행하였다.
결과
남성의 경우 주당 35-52시간 일하는 것에 비해, 법정 최대 근로시간을 초과한 주당 53-60시간을 근무하여도 AST 및 ALT 수치의 유의한 상승이 관찰되진 않았으나, 주당 60시간을 초과하여 일하는 경우 유의하게 상승하였다. 공변량을 보정한 후에도 AST와 ALT이상수치의 교차비(ORs)가 각각 1.51 (95% 신뢰 구간: 1.20-2.05) 및 1.25 (1.03-1.52) 증가하여 용량-반응 관계가 관찰되었다. 이 연관성은 40세 이상, 비만인, 비정규시간 근로자, 핑크 칼라 노동자, 임시직 노동자와 같은 고위험군에서 더 두드러졌다. 여성에서는 상관관계가 관찰되지 않았다.
결론
남성의 경우 장시간 노동은 간기능 검사 결과 이상과 관련이 있다. 근로자의 간 건강을 보호하기 위해서는 법정 근로시간을 철저히 준수하는 것이 필요하다.

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Association between long working hours and metabolic dysfunction–associated steatotic liver disease: a nationwide population-based study in Korea
S.-U. Baek, J.-U. Won, Y.-M. Lee, J.-H. Yoon
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Long working hours and increased risks of lean non-alcoholic fatty liver disease among Korean men and women
Ga-Young Lim, Yoosoo Chang, Inah Kim, Seungho Ryu, Ria Kwon, Jaechul Song
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The associations of health behaviors and working hours with high-sensitivity C-reactive protein levels in Korean wage workers: a cross-sectional study
Choong-Won Seo, Eun-A Park, Tae-Hyung Yoon
Osong Public Health and Research Perspectives.2023; 14(5): 356. CrossRef

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Original Article

Poor worker’s long working hours paradox: evidence from the Korea National Health and Nutrition Examination Survey, 2013-2018: Min Young Park, Jaeyoung Park, Jun-Pyo Myong, Hyoung-Ryoul Kim, Dong-Wook Lee, Mo-Yeol Kang; Ann Occup Environ Med 2022;34:e2. Published online February 14, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e2

Abstract Abstract in Korean PDF PubReader ePub

Background

Because income and working hours are closely related, the health impact of working hours can vary according to economic status. This study aimed to investigate the relationship between working hours and the risk of poor self-rated health according to household income level.

Methods

We used the data from the Korea National Health and Nutrition Examination Survey VI and VII. The information on working hours and self-rated health was obtained from the questionnaire. After stratifying by household income level, the risk of poor self-rated health for long working hour group (≥ 52 hours a week), compared to the 35–51 working hour group as a reference, were calculated using multiple logistic regression.

Results

Long working hours increased the risk of poor self-rated health in the group with the highest income, but not in the group with the lowest income. On the other hand, the overall weighted prevalence of poor self-rated health was higher in the low-income group.

Conclusions

The relationship between long working hours and the risk of poor self-rated health varied by household income level. This phenomenon, in which the health effects of long working hours appear to diminish in low-income households can be referred to as the ‘poor worker’s long working hours paradox’. Our findings suggest that the recent working hour restriction policy implemented by the Korean government should be promoted, together with a basic wage preservation to improve workers’ general health and well-being.

저소득 근로자의 장시간근무 역설: 2013-2018 국민건강영양조사 자료를 이용하여
목적
소득과 근로시간은 서로 밀접한 관계에 있으며, 이로 인해 근로시간이 건강 상태에 미치는 영향은 경제적 상황에 따라 달라질 수 있다. 본 연구는 가구소득수준에 따른 근로시간과 자가 건강 평가(self-rated health) 악화 위험의 연관성에 대하여 조사하였다.
방법
국민건강영양조사 제 6기 및 제 7기 자료를 이용하여 연구를 수행하였다. 근로시간 및 자가 건강 평가에 대한 정보는 설문조사를 통해 조사되었다. 주당 근로시간 35-51시간 군과 비교하여 주당 근로시간 52시간 이상인 장시간 근로 군의 자가 건강 평가 악화 위험을 가구 소득 수준으로 층화하여 다중 로지스틱 회귀분석을 통해 계산하였다.
결과
소득이 가장 높은 군에서는 근로시간이 길수록 자가 건강 평가 악화의 위험이 증가했으나 소득이 낮은 군에서는 유의한 결과를 보이지 않았다. 반면에 소득이 낮은 군에서는 근로시간에 관계 없이 전체적인 자가 건강 평가 수준이 낮은 것으로 관찰되었다.
결론
장시간 근로와 자가 건강 평가 악화 위험 간의 연관성은 가구소득수준에 따라 다른 것으로 나타났다. 저소득층에서 장시간 근로의 건강 영향이 약화되어 나타나는 이러한 현상을 ‘저소득 근로자 장시간 근로의 역설’이라고 부를 수 있다. 본 연구 결과는 최근 한국 정부가 시행하고 있는 근로시간 제한 정책을 추진할 때 전체 근로자의 건강과 복지를 향상시키기 위해서는 기본 임금 보전이 함께 추진되어야 함을 시사한다.

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Seong-Uk Baek, Jin-Ha Yoon
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Original Article

Association between exposure to violence, job stress and depressive symptoms among gig economy workers in Korea: Min-Seok Kim, Juyeon Oh, Juho Sim, Byung-Yoon Yun, Jin-Ha Yoon; Ann Occup Environ Med 2023;35:e43. Published online October 30, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e43

Abstract Abstract in Korean PDF PubReader ePub

Background

Gig workers, also known as platform workers, are independent workers who are not employed by any particular company. The number of gig economy workers has rapidly increased worldwide in the past decade. There is a dearth of occupational health studies among gig economy workers. We aimed to investigate the association between exposure to violence and job stress in gig economy workers and depressive symptoms.

Methods

A total of 955 individuals (521 gig workers and 434 general workers) participated in this study and variables were measured through self-report questionnaires. Depressive symptoms were evaluated by the Patient Health Questionnaire-9 when the score was greater than or equal to 10 points. The odds ratio with 95% confidence interval was calculated using multivariable logistic regression adjusted for age, sex, working hours, education level, exposure to violence and job stress.

Results

19% of gig economy workers reported depressive symptoms, while only 11% of general workers reported the depressive symptoms. In association to depressive symptoms among gig economy workers, the mainly result of odds ratios for depressive symptoms were as follows: 1.81 for workers type, 3.53 for humiliating treatment, 2.65 for sexual harassment, 3.55 for less than three meals per day, 3.69 for feeling too tired to do housework after leaving work.

Conclusions

Gig economic workers are exposed to violence and job stress in the workplace more than general workers, and the proportion of workers reporting depressive symptoms is also high. These factors are associated to depressive symptoms. Furthermore, the gig workers associated between depressive symptoms and exposure to violence, job stress.

한국 긱경제 근로자에서 폭력 및 직무 스트레스 노출과 우울 증상관의 연관성
목적
긱경제 근로자 또는 플랫폼 근로자는 특정 회사에 고용되지 않은 독립적인 근로자들을 말한다. 긱경제는 그 규모가 커지고 있고, 종사하는 근로자들도 많아지고 있으나, 긱경제 노동자들의 산업 보건 연구가 부족한 실정이다. 우리는 긱경제 근로자에서 폭력 노출과 직무 스트레스에 노출되는 것이 우울 증상과 연관성이 있는지 조사하는 것을 목표로 했다.
방법
총 955명(긱 근로자 521명, 일반 근로자 434명)이 본 연구에 참여하였으며, 우울 증상은 PHQ-9(Patient Health Questionnaire-9) 점수가 10점 이상일 때로 평가하였다. 폭력 노출과 직무 스트레스는 자기보고식 설문지를 이용하여 측정하였다. 연령, 성별, 근무시간, 교육수준을 보정한 다변량 로지스틱 회귀분석을 이용하여 Odds Ratio, 95% Confidence Interval를 산출했다.
결과
긱 근로자의 19%가 우울 증상을 보고한 반면, 일반 근로자의 11%만이 우울 증상을 보고했습니다. 긱경제 근로자의 우울상과 관련하여 우울상 Odds ratio의 주요 결과는표3에서 ‘긱경제 근로자’ 1.89, ‘굴욕적 처우 경험’ 3.53, ‘성희롱 경험’ 2.65, ‘하루 세 끼 미만의 식사’ 3.55, ‘퇴근 후 집안일을 하기엔 너무 피곤함’ 3.69로 나타났다.
결론
긱경제 근로자는 일반 근로자에 비해 직장 내 폭력과 직무스트레스에 더 많이 노출되고, 우울 증상을 호소하는 근로자의 비율도 높다. 이러한 요인은 우울 증상과 관련이 있다. 더욱이, 긱경제 근로자들은 우울 증상과 폭력 노출, 직업 스트레스와 관련이 있다.

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Original Article

Risk of insomnia symptoms according to Work-Family Conflict by workers’ characteristics: Kwanghyun Seo, Seungjun Ryu, Saebomi Jeong, Hee-Tae Kang, Sung-Kyung Kim, Sang-Baek Koh, Kyoung Sook Jeong, Sung-Soo Oh; Ann Occup Environ Med 2023;35:e36. Published online August 23, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e36

Abstract Abstract in Korean PDF PubReader ePub

Background

Work-Family Conflict means that the demands of work and family roles cannot be met simultaneously, so one cannot concentrate on one’s work or family role. This conflict can negatively affect mental health and cause insomnia symptoms.

Methods

This study was conducted on 20,442 subjects. Insomnia symptoms were assessed using the Minimal Insomnia Symptom Scale, and other variables were assessed using the questionnaire method. Logistic regression analyses were performed to evaluate the effect of Work-Family Conflict on insomnia symptoms, and subgroup logistic regression analyses were also performed.

Results

The number of people with insomnia symptoms was 4,322 (15.1%). Compared with Low Work-Family Conflict, the odds ratios (ORs) for the risk of insomnia symptoms were 1.84 (95% confidence interval: 1.56–2.16) in High work-to-family conflict, 1.16 (1.02–1.32) in High family-to-work conflict, and 3.19 (2.87–3.55) in High Work-Family Conflict. The ORs were higher for men than women in High WFC but higher for women than men in High Work-Family Conflict.

Conclusions

The risk of insomnia symptoms was highest in High Work-Family Conflict.

근로자 특성별 일-가정 갈등에 따른 불면증 증상의 발생 위험
목적
일-가정 갈등이 근로자의 불면증 증상 발생에 미치는 영향을 확인하고자 한다.
방법
이 연구는 20,442명의 피험자를 대상으로 수행되었다. 불면증 증상은 Minimal Insomnia Symptom Scale을 사용하여 평가하였고, 기타 변수는 설문지 방법을 사용하여 수집하였다. 일-가정 갈등이 불면증 증상 발생에 미치는 영향을 알아보기 위해 로지스틱 회귀 분석을 수행하였으며, 하위그룹 로지스틱 회귀 분석 또한 수행하였다.
결과
불면증이 있는 사람은 4,322명(15.1%)이었다. 전체 일-가정 갈등이 낮은 근로자와 비교했을 때, 불면증 증상 발생에 대한 오즈비는 WFC가 높은 근로자에서 1.84(95% 신뢰 구간 1.56-2.16), FWC가 높은 근로자에서 1.16(95% CI 1.02-1.32), 전체 일-가정 갈등이 높은 근로자에서 3.19(95% CI 2.87-3.55)이었다. 남성과 여성을 나누어 분석했을 때, WFC가 높은 근로자에서는 남성이 여성보다 오즈비가 높았으나 전체 일-가정 갈등이 높은 근로자에서는 여성이 남성보다 오즈비가 높았다.
결론
전체 일-가정 갈등이 높은 근로자에서 불면증 증상의 발생 위험이 가장 컸다.

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Female workers with long working hours are more likely to have depressive symptoms when having family-to-work conflict
Garin Lee, Ji-Hwan Kim, Seung-Sup Kim
International Archives of Occupational and Environmental Health.2024; 97(2): 199. CrossRef
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Seong-Uk Baek, Yu-Min Lee, Jin-Ha Yoon
Preventive Medicine.2024; 180: 107849. CrossRef

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Original Article

Association of heavy metal complex exposure and neurobehavioral function of children: Minkeun Kim, Chulyong Park, Joon Sakong, Shinhee Ye, So young Son, Kiook Baek; Ann Occup Environ Med 2023;35:e23. Published online July 6, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e23

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Exposure to heavy metals is a public health concern worldwide. Previous studies on the association between heavy metal exposure and neurobehavioral functions in children have focused on single exposures and clinical manifestations. However, the present study evaluated the effects of heavy metal complex exposure on subclinical neurobehavioral function using a Korean Computerized Neurobehavior Test (KCNT).

Methods

Urinary mercury, lead, cadmium analyses as well as symbol digit substitution (SDS) and choice reaction time (CRT) tests of the KCNT were conducted in children aged between 10 and 12 years. Reaction time and urinary heavy metal levels were analyzed using partial correlation, linear regression, Bayesian kernel machine regression (BKMR), the weighted quantile sum (WQS) regression and quantile G-computation analysis.

Results

Participants of 203 SDS tests and 198 CRT tests were analyzed, excluding poor cooperation and inappropriate urine sample. Partial correlation analysis revealed no association between neurobehavioral function and exposure to individual heavy metals. The result of multiple linear regression shows significant positive association between urinary lead, mercury, and CRT. BMKR, WQS regression and quantile G-computation analysis showed a statistically significant positive association between complex urinary heavy metal concentrations, especially lead and mercury, and reaction time.

Conclusions

Assuming complex exposures, urinary heavy metal concentrations showed a statistically significant positive association with CRT. These results suggest that heavy metal complex exposure during childhood should be evaluated and managed strictly.

소아 신경 행동 기능과 중금속 복합 노출의 관련성
목적
중금속 노출은 많은 국가에서 공중보건 관련해서 큰 과제이다. 중금속 노출에 따른 신경계의 영향을 보기 위한 과거 연구들 에서는 노출의 경우 단일 중금속에 대한 노출을, 노출에 따른 결과로는 임상적 징후 또는 질환의 진단을 중점으로 이루어졌다. 본 연구는 중금속 복합 노출과 준임상적 수준을 포함한 신경 행동 기능의 관계를 확인하기 위해 계획되었다.
방법
소변 중 수은, 납, 카드뮴 분석과 한국형 컴퓨터 신경행동검사중 부호 숫자 짝짓기 검사와 선택 반응 시간 검사를 211명의 10-12세의 소아들에게 시행한 자료를 바탕으로, 반응 시간과 소변 중 중금속 수치를 성별과 연령을 보정하여 편상관분석과 회귀분석으로 분석하였다. 그 중 유의미한 결과가 확인되는 항목에 대해 복합노출에 대한 분석을 Bayesian Kernel Machine regression, Weighted Sum Regression analysis, Quantile G-computation 기법을 활용하여 심층 분석하였다.
결과
부호숫자 짝짓기 검사의 경우 203건, 선택반응 검사의 경우 198건에 대해 분석을 수행하였다. 부호숫자 짝짓기 검사의 경우 단일 중금속과 편상관분석 및 다중회귀분석에서 유의미한 관련성이 보이지 않았다. 선택반응 검사의 경우 편상관분석상 개별 중금속과는 별다른 관계를 보이지 않았으나 다중회귀분석에서 수은 및 납과 유의미한 관련성을 보였다. 복합노출에 대한 분석방법인 Bayesian Kernel Machine regression, Weighted Sum Regression analysis, Quantile G-computation 기법에서 소변 중 중금속과 선택 반응 시간 검사의 반응시간 간에 양의 상관관계를 보였으며, 세 분석에서 비교적 일관되게 복합노출 시 수은과 납이 선택 반응 시간 검사의 반응시간에 양의 상관관계를 보였다. 카드뮴의 경우 뚜렷한 양의 상관관계를 보이지 않거나 그 기여도가 적었다.
결론
본 연구 샘플의 요중 수은, 납, 카드뮴의 범위는 임상적인 증상을 나타낼 수 있는 것으로 알려진 여러 기준 수준에 비해 매우 낮은 수준에 있으나, 그 범위 내에서도 선택 반응 검사와 중금속의 복합노출은 통계적으로 유의한 반응시간 차이를 보였다. 위 결과는 소아 중금속 복합 노출이 매우 낮은 농도 수준에서도 신경계에 영향을 미친다는 가능성을 제시하며, 이는 중금속 노출에 대한 더욱 민감하고 엄격한 관리가 필요함을 보여주는 결과이다.

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The impact of unfavorable and toxic environmental conditions on autonomic tone modulations while wearing N95 face masks
Valery Erkudov, Andrey Pugovkin, Kenjabek Rozumbetov, Azat Matchanov, Shanika Arachchi, Upaka Rathnayake
Case Studies in Chemical and Environmental Engineering.2024; 9: 100619. CrossRef
Association Between Multiple Heavy Metal Exposures and Cholesterol Levels in Residents Living Near a Smelter Plant in Korea
Sun-In Moon, Dong-Hyuk Yim, Kyunghi Choi, Sang-Yong Eom, Byung-Sun Choi, Jung-Duck Park, Heon Kim, Yong-Dae Kim
Journal of Korean Medical Science.2024;[Epub] CrossRef

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Special Issue

Association between irregular working hours and work-related musculoskeletal pain: results from the 6th Korean Working Conditions Survey: Munyoung Yang, Jun-Pyo Myong, Jongin Lee, Min Young Park, Mo-Yeol Kang; Ann Occup Environ Med 2023;35:e21. Published online July 3, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e21

Abstract PDF Supplementary Material PubReader ePub

Background

Recently, irregular working hours have become controversial issues in Korea. The health impact of irregular working hours on the work-related musculoskeletal pain (MSP) is scarcely researched before. We sought to investigate the association between irregular working hours and work-related MSP among South Korean workers.

Methods

This study used data from the sixth Korean Working Conditions Survey in 2020. The prevalence of work-related MSP was analyzed using the χ² test. A multiple logistic regression analysis was conducted to assess the association between irregular working hours and work-related MSP. We conducted stratified analysis by gender, weekly working hours, and workers’ control over their working hours. We calculated the adjusted odds ratios (ORs) of work-related MSP for irregular working hours combined with weekly working hours.

Results

The OR for work-related MSP was significantly higher in the population with irregular working hours than in the population with regular working hours (OR: 1.43, 95% confidence interval [CI]: 1.29–1.58). Irregular and long (> 52 hours/week) working hours have the highest risk of work-related MSP in both genders (in men, OR: 3.48 [95% CI: 2.53–4.78]; in women, OR: 2.41 [95% CI: 1.46–4.00]).

Conclusions

Irregular working hours were associated with work-related MSP in Korea. The association was magnified with long working hours. Reform of the Korean Labor Standards Act leading to increase irregular working hours may induce adverse health outcome.

Citations

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Effect of long working hours on psychological distress among young workers in different types of occupation
Seong-Uk Baek, Jin-Ha Yoon
Preventive Medicine.2024; 179: 107829. CrossRef
Special Series I: Working hours as a social determinant of workers’ health
Kyunghee Jung-Choi, Tae-Won Jang, Mo-Yeol Kang, Jungwon Kim, Eun-A Kim
Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef

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Case Report

Occupational asthma related to indoor air pollution in a worker at an indoor air gun shooting range: a case report: Kwang Min Lee, Seungho Lee, Yoon-Ji Kim, Seung-eun Lee, Youngki Kim, Dongmug Kang, Se-Yeong Kim; Ann Occup Environ Med 2023;35:e13. Published online June 19, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e13

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Indoor air pollution can cause and exacerbate asthma. We report a previously undescribed case of occupational asthma related to indoor air pollution in a worker at an indoor air gun shooting range and highlight the potential risk of developing occupational asthma in this environment.

Case presentation

A 31-year-old man presented with dyspnea, cough, and sputum and was diagnosed with asthma complicated by pneumonia. Objective evidence of asthma was obtained by performing a methacholine bronchial provocation test. It was suspected that the patient had occupational asthma, which began one month after changing jobs to work within the indoor air gun shooting range. The highest peak expiratory flow (PEF) diurnal variability on working days was 15%, but the highest variation was 24%, with 4 days out of 4 weeks having a variation of over 20% related to workplace exposure. Conversely, the diurnal variability on the rest days was 7%, and no day showed a variation exceeding 20%. The difference in the average PEF between working and rest days was 52 L/min. PEF deterioration during working days and improvement on rest days were noted.

Conclusions

The results obtained from the in-depth analysis of the PEF were adequate to diagnose the patient with occupational asthma. Exposure to indoor air pollution and lead and the patient’s atopy and allergic rhinitis may have contributed to the development of occupational asthma.

실내 공기총 사격장 근로자의 실내공기오염관련 직업성 천식 증례보고
a배경: 실내공기오염은 천식을 유발하고 악화시킬 수 있다. 본 연구는 실내 공기총 사격장에서 일하는 근로자의 실내 공기 오염과 관련된 이전에 기술되지 않은 직업성 천식 사례를 보고하고, 이러한 환경에서 직업성 천식 발병의 잠재적 위험을 강조한다.
증례
31세 남자가 호흡곤란, 기침, 가래 증상이 나타나 내원하였고, 폐렴이 동반된 천식으로 진단되었다. 천식의 객관적인 증거는 메타콜린 기관지유발검사를 시행하여 획득하였다. 환자는 실내공기총 사격장에서 근무하기 위해 이직한지 한달만에 직업성 천식을 앓고 있는 것으로 의심되었다. 근무일의 최고호기유량(PEF) 주간 변동성은 15%였지만, 가장 높은 변동성은 24%였으며, 4주 중 4일은 작업장 노출과 관련하여 20% 이상의 변동성을 보였다. 반대로 쉬는 날의 일교차는 7%로 20%를 넘는 날은 없었다. 근무일과 휴식일 사이의 평균 최고호기유량(PEF) 차이는 52 L/min이었다. 근무일 동안 PEF 악화 및 휴식일의 개선이 주목되었다.
결론
최고호기유량(PEF)의 심층분석결과는 직업성 천식 환자를 진단하기에 적합하였다. 실내공기오염과 납 노출, 환자의 아토피와 알레르기성 비염이 직업성 천식 발병에 기여했을 가능성이 있다.

Citations

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Recent developments in occupational asthma
Claudia Blouin, Catherine Lemière
Current Opinion in Pulmonary Medicine.2024; 30(3): 281. CrossRef
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Xiu He, Dengxiang Yao, Xiaoli Yuan, Jiaqi Ban, Yuxuan Gou, Mingdan You
Science of The Total Environment.2024; 952: 175880. CrossRef

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Original Article

The association of perfluoroalkyl substances (PFAS) exposure and kidney function in Korean adolescents using data from Korean National Environmental Health Survey (KoNEHS) cycle 4 (2018–2020): a cross-sectional study: Jisuk Yun, Eun-Chul Jang, Soon-Chan Kwon, Young-Sun Min, Yong-Jin Lee; Ann Occup Environ Med 2023;35:e5. Published online March 15, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e5

Abstract Abstract in Korean PDF PubReader ePub

Background

Perfluoroalkyl substances (PFAS) are chemicals widely used in various products in everyday life. Due to its unique strong binding force, the half-life of PFAS is very long, so bioaccumulation and toxicity to the human body are long-standing concerns. In particular, effects on kidney function have recently emerged and there are no studies on the effect of PFAS on kidney function through epidemiological investigations in Korea. From 2018 to 2020, the Korean National Environmental Health Survey (KoNEHS) cycle 4, conducted an epidemiological investigation on the blood concentration of PFAS for the first time in Korea. Based on this data, the relationship between PFAS blood concentration and kidney function was analyzed for adolescents.

Methods

We investigated 5 types of PFAS and their total blood concentration in 811 middle and high school students, living in Korea and included in KoNEHS cycle 4, and tried to find changes in kidney function in relation to PFAS concentration. After dividing the concentration of each of the 5 PFAS and the total concentration into quartiles, multivariable linear regression was performed to assess the correlation with kidney function. The bedside Schwartz equation was used as an indicator of kidney function.

Results

As a result of multivariable linear regression, when observing a change in kidney function according to the increase in the concentration of each of the 5 PFAS and their total, a significant decrease in kidney function was confirmed in some or all quartiles.

Conclusions

In this cross-sectional study of Korean adolescents based on KoNEHS data, a negative correlation between serum PFAS concentration and kidney function was found. A well-designed longitudinal study and continuous follow-up are necessary.

제 4기 국민환경보건 기초조사(2018-2020) 자료를 바탕으로 한 대한민국 청소년의 과불화 화합물 노출과 신장기능과의 상관관계 연구
목적
과불화 화합물은 일상생활에서 다양한 제품에 널리 쓰이는 화학물질이다. 특유의 강한 결합력으로 인한 반감기가 매우 길기 때문에 이로 인한 생물농축과 인체에 끼치는 독성작용은 오랫동안 큰 관심사이다. 최근에는 특히 신기능에 미치는 영향이 주목받고 있으나 국내에서는 대규모 역학조사를 통한 PFAS가 신기능에 미치는 영향에 대한 조사가 전무한 실정이다. 2018년부터 2020년까지 실시된 국민환경보건 기초조사는 국내 최초로 과불화 화합물의 혈중농도에 대한 대규모 역학조사를 실시했다. 이 자료를 바탕으로 국내 최초로 청소년을 대상으로 하여 과불화 화합물의 혈중농도와 신장기능의 관계를 분석하였다.
방법
제 4기 국민환경보건 기초조사에 포함된 국내에 거주하는 중, 고등학생 828명을 대상으로 5종의 과불화 화합물의 혈중 농도를 조사하고 농도에 따른 신장기능의 변화를 알아보고자 하였다. 5종의 과불화 화합물 각각의 농도와 총 합의 농도를 사분위수로 나눈 후 다중선형회귀분석을 실시하여 신기능과의 상관관계를 분석하였다.
결과
다중선형회귀분석 결과 5종의 과불화 화합물 각각의 농도와 총 합의 농도 증가에 따라 일부 또는 전체 사분위수에서 통계적으로 유의한 신장기능의 감소가 확인되었다.
결론
제 4기 국민환경보건 기초조사 자료를 바탕으로 한국 청소년을 대상으로 한 이번 단면연구에서는 혈중 과불화 화합물의 농도와 신기능 사이에 음의 상관관계가 있음을 발견하였다. 잘 설계된 종단연구와 지속적인 추적관찰이 필요하다.

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Association of Combined Per- and Polyfluoroalkyl Substances and Metals with Chronic Kidney Disease
Issah Haruna, Emmanuel Obeng-Gyasi
International Journal of Environmental Research and Public Health.2024; 21(4): 468. CrossRef
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Anirudh Mazumder, Kapil Panda
Advances in Science, Technology and Engineering Systems Journal.2024; 9(3): 62. CrossRef

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Original Article

Association between presenteeism and mental health among logistic center workers: Hyoungseob Yoo, Ji-hun Song, Hyoung-Ryoul Kim; Ann Occup Environ Med 2022;34:e39. Published online November 17, 2022; DOI: https://doi.org/10.35371/aoem.2022.34.e39

Abstract Abstract in Korean PDF Supplementary Material PubReader ePub

Background

Workers in logistics centers are always pressed for time to collect and pack products. They also participate in high-intensity manual labor in which various musculoskeletal hazards exist. In the case of logistic center labor, it is estimated that there is a high risk of presenteeism due to the above characteristics which can cause deterioration of workers’ mental health. However, there is insufficient research on this topic.

Methods

Workers in a logistic center were surveyed using an Internet questionnaire. The survey items included demographic characteristics, labor intensity and work-related factors, and mental health aspects such as depression and anxiety. The survey was conducted for about a month from July 26, 2021 and a total of 353 people were analyzed. Through the χ² test and t-test, the characteristics of workers who experienced presenteeism were examined and the prevalence ratios (PRs) of depression and anxiety experiences were calculated by multivariable Poisson regression. Afterwards, stratification analysis considering gender, the type of contract, and labor intensity was implemented.

Results

In the group that experienced presenteeism, the number of working days per week was higher and fixed-term workers, high labor intensity, and sleep deprivation were more common. In the multi-Poisson regression analysis conducted by adjusting the demographic characteristics, working hours, and work-related factors, the PRs of depression and anxiety were 1.98 (95% confidence interval: 1.24–3.18) and 1.81 (1.22–2.68), respectively. In particular, the p-value for interactions was significant when stratified with the type of contract.

Conclusions

As a result of the study, presenteeism and mental health were associated in logistic center workers. To prevent mental health issues of logistic center workers, management of presenteeism is necessary and a prospective study is needed.

일개 물류센터 노동자에서 프리젠티즘과 정신건강 사이의 상관성
목적
코로나19 이후 물류 산업 전반의 수요가 증가하기 시작하였다. 물류센터 노동은 상품을 입고하고 주문된 상품을 제한 시간 내에 집품, 포장해야하는 업무로 항상 시간에 쫓기며, 다양한 근골격계 유해인자들이 상존하는 고강도의 육체 노동이 특징적이다. 물류센터 노동의 경우 위와 같은 특징으로 프리젠티즘이 발생할 위험이 높을 것으로 추정되며, 이후 근로자의 정신건강의 악화를 가져올 것으로 추정이 되나, 이에 대한 연구는 드물다. 이에 물류산업 노동자에서의 프리젠티즘과 정신건강 사이의 상관성을 보고자 본 연구를 시행하였다.
방법
일개 물류센터 종사자들을 대상으로 온라인 설문조사 링크를 통해 2021.7.26-2021.8.27. 동안 설문조사를 실시하였다. 중복을 제외하여 총 353명의 물류센터 종사자들이 최종 연구대상자로 선정되었다. 인구학적 특징, 고용 형태 및 업무 내용, 노동 시간 및 강도, 교대 근무, 질병 경험, 수면장애, 우울 등 건강 실태 등에 대해 조사하였다. Chi-square test, T-test를 통해 프리젠티즘 여부에 따른 근로 관련 특징을 살펴보았고, multivariable Poisson regression을 통해 프리젠티즘 유무에 따른 우울, 불안의 Prevalence ratio(PR)을 산출하였고, 성별, 근무 시간, 노동 강도에 따른 층화 분석을 시행하였다. 통계 프로그램은 SAS 9.4(SAS Institute, Cary, NC, USA)를 사용하였다.
결과
프리젠티즘이 확인되는 군에서 주당 근로일수가 길고, 계약직이 많으며, 노동 강도가 높고, 수면시간이 적은 것으로 확인된다. 나이, 성별, 계약조건, 주당 근로시간, 근무 형태, 노동 강도를 보정하여 multivariable Poission regression을 통해 분석한 결과 프리젠티즘이 있는 군에서 우울과 불안이 발생할 PR 값이 1.98(95%CI 1.24-3.18), 불안이 발생할 PR 값이 1.81(95%CI 1.22-2.68)로 나타났다. 층화 분석 시 고용 형태가 프리젠티즘과 우울과의 관계에서 유의한 상호작용이 확인되었다.
결론
본 연구 결과 물류센터 노동자에서 프리젠티즘과 정신건강 사이의 상관관계가 확인되었다. 물류센터 노동자의 정신건강을 예방하기 위해 프리젠티즘을 유발할 노동 강도 및 노동 환경을 개선해야하며, 아파도 일을 쉴 수 있도록 상병수당, 유급휴가 등의 정책 등이 마련되어야 할 것을 보여준다.

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