Annals of Occupational and Environmental Medicine

Original Article

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; Ann Occup Environ Med 2024;36:e9. Published online April 1, 2024; DOI: https://doi.org/10.35371/aoem.2024.36.e9

Abstract Abstract in Korean PDF PubReader ePub

Background

Long working hours are associated with an increased risk of cardiovascular disease, yet the underlying mechanism(s) remain unclear. The study examines how occupational factors like working hours, shift work, and employment status correlate with dietary choices and sodium intake, impacting hypertension risk.

Methods

This study used data from the Korea National Health and Nutrition Examination Survey conducted between 2013 and 2020. The dataset included 8,471 respondents, all of whom were wage workers aged 20 or older and reported working at least 36 hours per week. Individuals who have been previously diagnosed with or are currently diagnosed with hypertension, diabetes, or dyslipidemia were excluded. The average daily sodium intake was assessed via a 24-hour dietary recall method. Average weekly working hours were categorized into 3 groups: 36–40 hours, 41–52 hours, and over 52 hours. Multiple logistic regression models were used.

Results

Study findings revealed that 83.7% of participants exceeded the recommended daily sodium intake of 2 g set by the World Health Organization. After adjusting for confounding factors, a positive correlation was observed between average working hours and daily sodium intake. Among males, statistical significance was found in the group with average weekly working hours of 41–52 hours (prevalence ratio [PR]: 1.17; 95% confidence interval [CI]: 1.05–1.30) and the group exceeding 52 hours (PR: 1.22; 95% CI: 1.09–1.38) when comparing the fourth quartile of daily sodium intake to the combined quartiles of Q1, Q2, and Q3. Among females, no significance was noted.

Conclusions

Long working hours were associated with increased sodium intake, primarily among male workers. This connection is likely attributed to having less time for home-cooked meals, resulting in higher fast food consumption and dining out. A workplace intervention promoting healthy eating and reducing stress is essential to lower sodium consumption and mitigate hypertension risk.

장시간 근무가 일일 소듐 섭취량에 미치는 영향
목적
장시간 근무는 심혈관 질환의 증가와 관련이 있다고 알려져 있지만, 그 메커니즘은 명확히 알려져 있지 않다. 본 연구는 주당 평균 근로시간, 교대근무 및 고용 형태 등의 직업적 요인과 식습관 변화 간의 관계를 확인하고, 특히 고혈압의 알려진 위험 요인인 과다한 소듐 섭취와의 관련성을 조사하였다.
방법
본 연구는 2013년부터 2020년까지 실시된 대한민국 국민건강영양조사의 데이터를 사용하였다. 연구대상자는 20세 이상의 임금 근로자, 주당 최소 36시간 이상 근무하는 자로 선정하였다. 이 외에도 다양한 인구학적, 직업 변수가 설문 조사를 통해 수집되었으며, 평균 일일 소듐 섭취량은 24시간 회상법을 통해 조사되었다. 주당 평균 근무 시간은 36-40시간, 41-52시간 및 52시간 이상의 세 집단으로 분류되었다. 다중 로지스틱 회귀 모델이 분석에 사용되었다.
결과
연구대상자 중 83.7%가 세계보건기구(WHO)에서 권장한 일일 나트륨 섭취량인 2g을 초과한 것이 확인되었다. 교란변수 보정 후에도 주당 평균 근로시간과 일일 소듐 섭취 간의 통계적 유의성이 확인되었다. 남성에 대하여, 주당 평균 근무 시간이 41-52시간인 그룹 (PR: 1.17, 95% CI: 1.05-1.30)과 52시간을 초과한 그룹 (PR: 1.22, 95% CI: 1.09-1.38)이 일일 소듐 섭취량 4분위에서 1, 2, 3분위를 포함한 그룹과와 비교하여 통계적으로 유의미한 관련이 있었다. 여성에 대하여는 통계적으로 유의미하지 않았다.
결론
장시간 근무는 주로 남성 근로자에서 소듐 섭취 증가와 관련이 있었다. 이는 가정에서 조리하는 시간이 줄어들어 패스트 푸드 및 외식 소비가 증가하는 것에 기인한 것으로 생각된다. 과량의 소듐 섭취는 고혈압의 알려진 위험 요인이므로, 직장에서의 적극적인 개입을 통해, 더 건강한 식습관과 개선된 근무 환경을 통해 소듐 섭취를 줄이는 것이 필요하다.

Citations

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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

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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.

Citations

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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
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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

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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

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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
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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
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
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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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Brief Communication

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

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Effect of long working hours on psychological distress among young workers in different types of occupation
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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
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Sleep Medicine.2024; 119: 549. CrossRef
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Seong-Uk Baek, Jin-Ha Yoon, Yu-Min Lee, Jong-Uk Won
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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
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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
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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
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Original Article

Correlation of commute time with the risk of subjective mental health problems: 6^th Korean Working Conditions Survey (KWCS): Hyo Choon Lee, Eun Hye Yang, Soonsu Shin, Seoung Ho Moon, Nan Song, Jae-Hong Ryoo; Ann Occup Environ Med 2023;35:e9. Published online May 11, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e9

Abstract Abstract in Korean PDF PubReader ePub: Background
Studies conducted so far on the link between commute time and mental health among Koreans remain insufficient. In this study, we attempted to identify the relationship between commute time and subjective mental health using the 6^th Korean Working Conditions Survey (KWCS).
Methods
Self-reported commute time was divided into four groups: ≤ 30 (group 1), 30–60 (group 2), 60–120 (group 3), and > 120 minutes (group 4). Subjective depression was defined as a score of 50 points or less on the WHO-5 well-being index. Subjective anxiety and fatigue were defined as answering ‘yes’ to the questionnaire on whether they had experienced it over the past year. The analysis of variance, t-test, and χ² test was used to analyze the differences among the characteristics of the study participants according to commute time, depression, anxiety, and fatigue. Odds ratios (ORs) and 95% confidence intervals (CIs) for depression, anxiety, and fatigue according to commute time were calculated using multivariate logistic regression models adjusted for sex, age, monthly income, occupation, company size, weekly working hours, and shift work status.
Results
Long commute times showed increased ORs and graded increasing trends for depression, anxiety, and fatigue. The ORs for depression increased significantly in group 2 (1.06 [1.01–1.11]), group 3 (1.23 [1.13–1.33]), and group 4 (1.31 [1.09–1.57]) compared to group 1 (reference). The ORs for anxiety increased significantly in group 2 (1.17 [1.06–1.29]), group 3 (1.43 [1.23–1.65]) and group 4 (1.89 [1.42–2.53]). The ORs for fatigue increased significantly in group 2 (1.09 [1.04–1.15]), group 3 (1.32 [1.21–1.43]), and group 4 (1.51 [1.25–1.82]).
Conclusions
This study highlights that the risk of depression, anxiety, and fatigue increases with commute time.; 통근 시간과 주관적 정신건강문제 위험의 상관관계 : 제6차 한국근로환경조사
목적
한국인들의 통근 시간과 정신 건강의 관계에 대해 지금까지 수행된 연구는 매우 부족하다. 본 연구에서는 제6차 한국근로환경조사 자료를 이용하여 통근 시간과 주관적 정신건강의 관계를 규명하고자 하였다.
방법
자가 보고된 통근 시간은 30분 이하(1군), 30분-60분(2군), 60분-120분(3군), 120분 초과(4군)의 4개 그룹으로 분류하였다. 주관적 우울은 WHO-5 웰빙 지수 50점 이하인 경우로 정의하였다. 주관적 불안과 피로는 지난 1년간 이러한 증상을 경험한 적이 있는지에 대한 설문지에 '그렇다'고 대답한 경우로 정의하였다. 분산분석, T-검정 및 카이-제곱 검정을 사용하여 출퇴근 시간, 우울, 불안, 피로에 따른 연구 참여자들의 특성 차이를 분석하였다. 성별, 연령, 월 소득, 직업, 회사 규모, 주당 근로 시간, 교대근무 상태를 보정한 다변량 로지스틱 회귀모형을 이용하여, 통근 시간에 따른 우울, 불안, 피로에 대한 오즈비와 95% 신뢰구간을 산출하였다.
결과
긴 통근 시간은 우울, 불안, 피로에 대한 오즈비 증가 및 점진적인 상승 추세를 보여주었다. 우울에 대한 오즈비는 2군(1.06[1.01-1.11]), 3군(1.23[1.13-1.33])과 4군(1.31[1.09-1.57])에서 1군(참조군)에 비해 유의하게 증가하였다. 불안에 대한 오즈비는 2군(1.17[1.06-1.29]), 3군(1.43[1.23-1.65])과 4군(1.89[1.42-2.53])에서 유의하게 증가했다. 피로에 대한 오즈비는 2군(1.09[1.04-1.15]), 3군(1.32[1.21-1.43])과 4군(1.51[1.25-1.82])에서 유의하게 증가했다.
결론
본 연구는 출퇴근 시간이 증가함에 따라 우울증, 불안, 피로의 위험이 증가한다는 것을 강조한다.

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Original Article

Relationship between visual display terminal working hours and headache/eyestrain in Korean wage workers during the COVID-19 pandemic: the sixth Korean Working Conditions Survey: Gayoung Kim, Seong-yong Cho, Jinseok Kim, Seongyong Yoon, Jisoo Kang, Si young Kim; Ann Occup Environ Med 2023;35:e8. Published online May 9, 2023; DOI: https://doi.org/10.35371/aoem.2023.35.e8

Abstract Abstract in Korean PDF PubReader ePub: Background
Prolonged use of visual display terminal (VDT) can cause eyestrain, dry eyes, blurred vision, double vision, headache and musculoskeletal symptoms (neck, shoulder, and wrist pain). VDT working hours among workers have greatly increased during the coronavirus disease 2019 (COVID-19) pandemic. Therefore, this study aimed to investigate the relationship between VDT working hours and headache/eyestrain in wage workers using data from the sixth Korean Working Conditions Survey (KWCS) (2020–2021) conducted during the COVID-19 pandemic.
Methods
We analyzed the sixth KWCS data of 28,442 wage workers aged 15 years or older. The headache/eyestrain that occurred in the last year was assessed. The VDT work group included workers who use VDT always, almost always, and three-fourth of the working hours, while the non-VDT work group included workers who use VDT half of the working hours, one-fourth of the working hours, almost never, and never. To analyze the relationship between VDT working hours and headache/eyestrain, the odds ratios (ORs) and 95% confidence interval (CI) were calculated using logistic regression analysis.
Results
Among the non-VDT work group, 14.4% workers experienced headache/eyestrain, whereas 27.5% workers of the VDT work group experienced these symptoms. For headache/eyestrain, the VDT work group showed adjusted OR of 1.94 (95% CI: 1.80–2.09), compared with the non-VDT work group, and the group that always used VDT showed adjusted OR of 2.54 (95% CI: 2.26–2.86), compared with the group that never used VDT.
Conclusions
This study suggests that during the COVID-19 pandemic, as VDT working hours increased, the risk of headache/eyestrain increased for Korean wage workers.; 코로나 19 유행 시기의 임금근로자에서 영상표시단말기(VDT) 작업시간과 두통/눈피로의 연관성: 제 6차 근로환경조사(KWCS)
목적
영상표시단말기(VDT)를 장시간 사용하면 눈의 피로, 안구 건조, 시야 흐림, 복시, 두통 및 근골격계 증상(목, 어깨 및 손목 통증)을 유발할 수 있다. 코로나19의 유행 동안 근로자들의 VDT 근로시간이 크게 증가했다. 본 연구는 코로나19 유행 시기에 실시된 제6차 KWCS(2020-2021) 자료를 활용하여 임금근로자의 VDT 근로시간과 두통/눈피로의 연관성을 조사하고자 하였다.
방법
본 연구는 15세 이상 임금근로자 28,442명을 대상으로 제6차 KWCS 자료를 분석하였다. 두통/눈피로는 지난 1년 동안 발생 여부로 확인하였다. 근무시간 내내, 거의 모든 근무시간, 근무시간 3/4 동안 VDT를 사용할 경우 VDT 작업군으로 분류하였고, 근무시간 절반, 근무시간 1/4, 거의 없음, 전혀 사용하지 않는 경우 VDT 비작업군으로 분류하였다. VDT 근무시간과 두통/눈피로의 관계를 분석하기 위해 로지스틱 회귀분석을 이용하여 승산비(OR)와 95% 신뢰구간(CI)을 계산하였다.
결과
본 연구는 15세 이상 임금근로자 28,442명을 대상으로 제6차 KWCS 자료를 분석하였다. 두통/눈피로는 지난 1년 동안 발생 여부로 확인하였다. 근무시간 내내, 거의 모든 근무시간, 근무시간 3/4 동안 VDT를 사용할 경우 VDT 작업군으로 분류하였고, 근무시간 절반, 근무시간 1/4, 거의 없음, 전혀 사용하지 않는 경우 VDT 비작업군으로 분류하였다. VDT 근무시간과 두통/눈피로의 관계를 분석하기 위해 로지스틱 회귀분석을 이용하여 승산비(OR)와 95% 신뢰구간(CI)을 계산하였다.
결론
본 연구는 코로나19 세계적 유행 기간 동안 VDT 근로시간이 증가함에 따라 한국 임금근로자의 두통/눈피로 위험이 증가함을 시사한다.

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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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Comparison of the Association Between Presenteeism and Absenteeism among Replacement Workers and Paid Workers: Cross-sectional Studies and Machine Learning Techniques
Heejoo Park, Juho Sim, Juyeon Oh, Jongmin Lee, Chorom Lee, Yangwook Kim, Byungyoon Yun, Jin-ha Yoon
Safety and Health at Work.2024; 15(2): 151. CrossRef
Effects of Workplace Violence on Emotional Distress
SoHyun Woo, Heeseung Choi, Soyoun Shin
Journal of Psychosocial Nursing and Mental Health Services.2024; 62(4): 24. CrossRef
Exploring the role of climate for conflict management and high involvement work practices as moderators in the workplace bullying and work-related depression link
Emre Burak Ekmekcioglu, Hamidah Nabawanuka, Yussif Mohammed Alhassan, John Yaw Akparep, Cansu Ergenç
International Journal of Conflict Management.2024; 35(4): 707. CrossRef
Reciprocal longitudinal associations of supportive workplace relationships with depressive symptoms and self-rated health: A study of Korean women
Seong-Uk Baek, Jin-Ha Yoon, Jong-Uk Won
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Workplace violence and interpersonal deviance among Pakistani nurses: role of sense of coherence
Ali Waqas, Shahbaz Haider, Riaz Ahmed, Abida Abdul Khaliq, Kareem M. Selem
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Associations between work-related variables and workplace violence among Chinese medical staff: A comparison between physical and verbal violence
Long Sun, Wen Zhang, Aihua Cao
Frontiers in Public Health.2023;[Epub] CrossRef

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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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Original Article

The association between direct supervisor's behavior and employee presenteeism in Korean wage workers: findings from the fifth Korean Working Condition Survey: Sung Hee Lee, Joo Hyun Sung, Dae Hwan Kim, Chang Sun Sim; Ann Occup Environ Med 2021;33:e30. Published online September 24, 2021; DOI: https://doi.org/10.35371/aoem.2021.33.e30

Abstract PDF Supplementary Material PubReader ePub

Background

Presenteeism is a phenomenon in which employees go to work, but physical or mental health problems make it impossible for them to properly demonstrate their abilities, and productivity decreases accordingly. Recent studies have considered the behavior of direct supervisors to be an important factor in the pathogenesis of various health-related outcomes. This study aimed to investigate the association between the direct supervisor's behaviors and presenteeism among wage workers in South Korea.

Methods

A total of 25,798 participants from the fifth Korean Working Condition Survey conducted in 2017 were included in the analysis. The behaviors of direct supervisor were assessed by 6 questionnaire items. In this study, the distribution of the scores was categorized into 4 categories (very good, good, bad, and very bad). To assess presenteeism, the corresponding questionnaire item was used. χ² tests and multiple logistic regression analyses adjusted for general, occupational, and psychosocial factors were performed to determine the association between the behaviors of direct supervisor and presenteeism.

Results

Direct supervisor's behavior were significantly associated with presenteeism. The adjusted odds ratios (aORs) of presenteeism in the good, bad, and very bad groups were 1.297 (95% confidence interval [CI]: 1.153–1.458), 1.191 (95% CI: 0.941–1.507), and 1.604 (95% CI: 1.184–2.175), compared with the very good group. Associations between presenteeism and the behaviors of direct supervisor were significant in male workers, but not in female workers. For male workers, the aORs of presenteeism in the good, bad, very bad groups were 1.661 (95% CI: 1.425–1.936), 1.445 (95% CI: 1.053–1.982), 2.340 (95% CI: 1.569–3.491), respectively.

Conclusions

This study suggests that the behavior of a direct supervisor can influence the occurrence of presenteeism, particularly in men. The proper management of senior employee's behaviors is necessary to reduce the risk of presenteeism in the workplace.

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International Journal of Environmental Research and Public Health.2022; 19(17): 10525. CrossRef

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Original Article

Association between split shift work and work-related injury and disease absence: Kwon Ko, Jae Bum Park, Kyung-Jong Lee, Inchul Jeong; Ann Occup Environ Med 2021;33:e27. Published online August 19, 2021; DOI: https://doi.org/10.35371/aoem.2021.33.e27

Abstract PDF Supplementary Material PubReader ePub: Background
Shift work (particularly split shifts) has been noted among the working conditions that hinder sustainable work. However, little is known regarding the effects of split shifts on health. This study aimed to investigate the association between split shift work and work-related injury and disease absence.
Methods
This study used data from the fifth Korean Working Conditions Survey and included 4,042 paid shift workers. Shift work type and self-reported work-related injury and disease absence were investigated using a questionnaire. Logistic regression analysis was performed to investigate the association between split shift work and work-related absence with rotating shift worker as the reference group.
Results
Of the 4,042 shift workers, 980 (24.3%) were split shift workers. The adjusted odds ratio (aOR) of split shift for absence due to work-related injury was high at 2.94 (95% confidence interval [CI]: 1.85–4.68) and the aOR of split shift for absence due to work-related disease was also high at 1.58 (95% CI: 1.09–2.29) compared to rotating shift.
Conclusions
Split shift work leads to an increased risk of absences due to work-related injury and disease.

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Original Article

Sunlight exposure and eye disorders in an economically active population: data from the KNHANES 2008-2012: Junhyeong Lee, Ui-Jin Kim, Yongho Lee, Eunseun Han, Seunghon Ham, Wanhyung Lee, Won-Jun Choi, Seong-Kyu Kang; Ann Occup Environ Med 2021;33:e24. Published online July 16, 2021; DOI: https://doi.org/10.35371/aoem.2021.33.e24

Abstract Abstract in Korean PDF PubReader ePub

Background

Sunlight exposure is a major risk factor for eye disorders. Most outdoor workers cannot avoid sunlight exposure. This study aimed to analyze the relationship between outdoor sunlight exposure and eye disorders in an economically active population.

Methods

This study analyzed the 2008–2012 Korea National Health and Nutritional Examination Survey data. Sunlight exposure was categorized as < 5 hours and > 5 hours. We also analyzed the dose-dependent relationship between exposure to sunlight and eye disorders (cataracts, pterygium, and age-related macular degeneration [AMD]) using data from 2010 to 2012 by subdividing the exposure groups into < 2 hours, 2–5 hours, and ≥ 5 hours. Eye disorders were diagnosed by an ophthalmologist. The study participants were stratified by sex, and the results were analyzed using the χ² test and multiple logistic regression analysis.

Results

In the female group, the odds ratio of pterygium in the high-level sunlight exposure group was 1.47 (95% confidence interval [CI]: 1.15–1.89). Regarding AMD, the odds ratios were 1.42 (95% CI: 1.16–1.73), 1.33 (95% CI: 1.03–1.73), and 1.58 (95% CI: 1.15–2.16) in the total, male, and female groups, respectively. Analysis of the dose-response relationship revealed that the odds ratios of pterygium in the high-level sunlight exposure subgroups of the total and female groups were 1.62 (95% CI: 1.25–2.08) and 2.00 (95% CI: 1.39–2.88), respectively.

Conclusions

This study demonstrated a relationship between sunlight exposure and eye disorders in an economically active population. Women were found to be especially vulnerable to pterygium. However, additional prospective studies to clarify the pathophysiology of pterygium are needed.

경제활동인구의 햇빛노출과 안질환:2008-2012 국민건강영향조사 자료 분석
목적
햇빛 노출은 안질환의 주된 위험인자이며, 일반 인구집단에서 안질환 유병률과의 관련이 잘 알려져 있다. 옥외작업자는 자신의 의지로 햇빛 노출을 피할 수 없을 가능성이 높다. 본 연구는 경제활동인구의 옥외 햇빛 노출과 안구 질환의 관계를 분석하는 것을 목적으로 하였다.
방법
이 연구는 2008-2012년 국민건강영양조사 자료를 집계하여 사용하였다. 햇빛 노출은 5시간 미만과 5시간 이상 노출 그룹으로 세분화되었으며, 2010-2012년 자료를 활용해 2시간 미만, 2-5시간, 5시간 이상 노출 그룹으로 세분화하여 양-반응 관계 분석을 시행하였다. 안질환은 안과의사에 의해 진단되었다. 연구 참여 집단을 성별로 층화하여 카이제곱 분석과 다중 로지스틱 회귀분석을 시행하였다.
결과
여성 집단에서 햇빛 고노출군의 익상편 유병 오즈비는 1.47 (95% CI=1.15-1.89)이었다. 나이관련황반변성의 경우 전체 집단에서 유병 오즈비는 1.42(95% CI=1.16-1.73), 남성 집단에서 1.33 (95% CI=1.03-1.73), 여성 집단에서 1.58 (95% CI=1.15-2.16)이었다. 양-반응 관계 분석 결과 햇빛 고노출군에서 전체 집단의 익상편 유병 오즈비는 1.62 (95% CI=1.25-2.08)이었고, 여성 집단에서는 2.00(95% CI=1.39-2.88)이었다.
결론
본 연구는 몇 가지 제한점이 있지만 경제활동인구에서의 햇빛 노출과 안질환 유병률에 대한 관계에 대한 정보를 제공한다. 특히 익상편의 경우 여성이 더 취약한 것으로 나타났는데, 발병기전을 고려한 전향적 연구 등의 추가적인 연구가 필요하다.

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The association between non-regular work patterns and insomnia among Korean wage workers: the fifth Korean working condition survey: Ho-Yeon Kim, Juho Choi, Hyun-Mook Lim, Chamjin Park, Yun-Chul Hong; Ann Occup Environ Med 2021;33:e9. Published online March 29, 2021; DOI: https://doi.org/10.35371/aoem.2021.33.e9

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Background

Non-regular workers are steadily increasing on account of improving corporate productivity. They are classified as non-permanent, part-time, or non-typical workers. Non-regular work has a negative impact on workers' physical and mental health. This study analyzed the relationship between non-permanent, part-time and non-typical work and insomnia among Korean wage workers, and investigated the differences and interactions between different work patterns.

Methods

The Fifth Korean Working Conditions Survey was used in this study. Non-regular work patterns were classified into 7 types: type 1, sole non-permanent; type 2, sole part-time; type 3, sole non-typical; type 4, part-time-non-typical; type 5, non-permanent-non-typical; type 6, non-permanent-part-time; type 7, all inclusive. Insomnia was measured on a scale from “normal sleep” to “insomnia” based on the 3-item Minimal Insomnia Symptom Scale. Multiple logistic regression was used to analyze the association between non-regular work patterns and insomnia among wage workers.

Results

After multivariate adjustment, a significantly increased odds ratio (OR) for insomnia was found in types 1, 2, 3, 4, 5, 6, and 7 of non-regular work patterns compared to regular work patterns. After stratification for shift and night work, the OR of the group with shift and night work was higher than that of the group without shift and night work.

Conclusions

Insomnia was significantly associated with non-regular work patterns. This association was prominent in workers with shifts and night work. This finding suggests that proper work patterns may be needed to reduce the risk of insomnia among Korean wage workers and workers who initially had insomnia should consider these results before placement.

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Relationship between job rotation and work-related low back pain: a cross-sectional study using data from the fifth Korean working conditions survey: Ji-Su Shin, Kwanghyun Seo, Hyun-Jeong Oh, MyeongSeob Lim, Hee-Tae Kang, Kyeong-Sook Jeong, Sang-Baek Koh, Sung-Kyung Kim, Sung-Soo Oh; Ann Occup Environ Med 2021;33:e3. Published online January 28, 2021; DOI: https://doi.org/10.35371/aoem.2021.33.e3

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Background

Job rotation was introduced in various industries as a strategic form of work for improving workers' job skills and health management. This study aims to examine the relationship between job rotation and work-related low back pain (LBP), one of the typical work-related musculoskeletal symptoms of Korean workers.

Methods

We conducted this study using the data of the 5th Korean Working Conditions Survey (KWCS). As the subject of this study, 27,163 wage workers were selected, and classified into three groups according to occupational type (white-collar, service and sales, and blue-collar). In this study, job rotation means to change the work-related activities with other colleagues periodically and work-related LBP was defined as whether there was work-related LBP in the last 12 months. Chi-square test and logistic regression were used to analyze the relationship between job rotation and work-related LBP.

Results

Out of 27,163 workers, 2,421 (8.9%) answered that they had job rotation and 2,281 (8.4%) answered that they experienced work-related LBP. According to the results from logistic regression, job rotation was significantly associated with low prevalence of work-related LBP among blue-collar workers (odds ratio [OR]: 0.71, 95% confidence interval [CI]: 0.58–0.88), whereas no significant relationship was observed among white-collar, service and sales groups. In addition, the negative association between job rotation and work-related LBP among blue-collar workers was more pronounced when exposed to ergonomic risk factors (uncomfortable posture OR: 0.79, 95% CI: 0.64–0.98; heavy work OR: 0.74, 95% CI: 0.57–0.96; repetitive work OR: 0.74, 95% CI: 0.60–0.92).

Conclusions

Job rotation was associated with low prevalence of work-related LBP among workers in the blue-collar occupational group in Korea. It is necessary to evaluate the effect of job rotation by occupational type and introduce an appropriate method of job rotation to reduce workers' work-related musculoskeletal symptoms.

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The association between effort-reward imbalance, work-life balance and depressive mood in Korean wage workers: The 4th Korean Working Conditions Survey: Hyun-mook Lim, Cham-jin Park, Ji-hoo Yook, Min-seok Kim, Ho-yeon Kim, Yun-Chul Hong; Ann Occup Environ Med 2021;33:e2. Published online January 25, 2021; DOI: https://doi.org/10.35371/aoem.2021.33.e2

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Background

This study was conducted to determine the association between work-life (WL) balance, effort-reward (ER) imbalance, and depressive mood in Korean wage workers when 2 models were considered simultaneously.

Methods

We analyzed 26,014 Korean workers including 13,471 men and 12,543 women from the 4th Korean Working Conditions Survey data. Multiple logistic regression was used to analyze the association between WL, ER status, and the depressive mood of Korean workers. We classified the subjects into a total of 4 groups as follows. Group 1: WL and ER status are both “balanced”, group 2: WL status is “imbalanced” and ER status is “balanced”, group 3: WL status is “balanced” and the ER status is “imbalanced”, group 4: WL and ER status are both “imbalanced.”

Results

We found significantly increased odds ratios (ORs) for depressive mood in groups 2, 3, and 4 compared with group 1 after adjusting for the general and occupational characteristics of the subjects in both men and women. We also found that the trend of ORs increased gradually from groups 2 to 4 compared with group 1 in both men and women; group 2: OR: 1.23 (95% confidence interval [CI]: 1.12–1.35), group 3: OR: 1.40 (95% CI: 1.27–1.55), group 4: OR: 1.99 (95% CI: 1.74–2.28) compared with group 1 in men; group 2: OR: 1.28 (95% CI: 1.15–1.42), group 3: OR: 1.45 (95% CI: 1.31–1.59), group 4: OR: 2.04 (95% CI: 1.76–2.36) compared with group 1 in women.

Conclusions

As a result, we found the association between imbalanced WL, ER status, and depressive mood in Korean workers using 2 models simultaneously. It is important to provide a balanced WL and ER condition to improve the mental health of workers.

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Combined effect of emotional labor and job insecurity on sleep disturbance among customer service workers: Sunguk Choi, Kwon Ko, Jae Bum Park, Kyung-Jong Lee, Seungho Lee, Inchul Jeong; Ann Occup Environ Med 2020;32:e33. Published online September 10, 2020; DOI: https://doi.org/10.35371/aoem.2020.32.e33

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Background

Job insecurity and emotional labor are poor job-related factors that are known to cause sleep disturbances in customer service workers. This study investigates the combined effect of emotional labor and job insecurity on sleep disturbance.

Methods

This study used data from the Fifth Korean Working Condition Survey and included 15,147 paid workers who serve customers below 65 years. We re-classified into 6 groups based on whether the degree of emotional labor increased (Rarely/Sometimes/Always) or whether job insecurity (No/Yes) was present. We performed propensity score matching for several covariates and calculated odds ratio (OR) and 95% confidence intervals (CIs) for sleep disturbance by logistic regression models using only matched subjects.

Results

Workers exposed to emotional labor and job insecurity had significantly higher risk for 3 dimensions of sleep disturbance (difficulty falling asleep, waking up repeatedly during the sleep, and waking up with feeling of fatigue) (OR [95% CI]: 1.44 [1.22–1.69], 1.18 [0.99–1.40], 1.52 [1.30–1.79] for emotional labor; and 2.00 [1.75–2.29], 2.20 [1.91–2.53], 1.67 [1.45–1.92] for job insecurity). Compared to those who were exposed to both emotional labor rarely and without job insecurity, when workers had both poor job factors, the OR (95% CI) for sleep disturbance for difficulty falling asleep, waking up repeatedly during the sleep, and waking up with feeling of fatigue were 3.05 (2.42–3.86), 2.89 (2.26–3.69), and 2.60 (2.06–3.29), respectively. The relative excess risk due to Interaction of job insecurity and emotional labor was significant only for difficulty falling asleep, but not the other 2 sleep disturbance dimensions.

Conclusions

Customer service workers suffered from severe sleep disturbances according to the existing degree of emotional labor and job insecurity. The combined effect of both could have an additive influence on serious sleep disturbance among customer service workers.

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Research Article

Association between change in working time arrangements and sleep disturbance: Ryun Ha, Jae Bum Park, Kyung-Jong Lee, Sunguk Choi, Inchul Jeong; Ann Occup Environ Med 2020;32:e18. Published online June 18, 2020; DOI: https://doi.org/10.35371/aoem.2020.32.e18

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Background

Change in working time arrangement (WTA) can be harmful to workers' sleep and health. This study aimed to investigate the association between change in working time arrangement and sleep disturbance.

Methods

This study used data from the Fifth Korean Working Condition Survey and included 33,203 paid workers. We performed a stratified analysis by sex. After dividing the participants into 6 groups based on whether or not they experienced WTA changes, and their weekly working hours (≤40, 41–52, ≥53 hours), we calculated odds ratio (OR) using the weekly working hours ≤40 hours and with no WTA change as the reference group.

Results

Of the 33,203 paid workers, participants who experienced change in working time arrangement had higher prevalence of all three types of sleep disturbance symptoms (difficulty in falling asleep, waking up repeatedly during sleep, and waking up with a feeling of exhaustion and fatigue) in both sexes. Compared to the reference group at 95% confidence interval (CI), the group with change in WTA showed elevated OR values of 1.91 (95% CI: 1.73–2.11), 1.93 (95% CI: 1.74–2.14), 2.47 (95% CI: 2.26–2.71) for male workers; and 1.93 (95% CI: 1.73–2.16), 2.02 (95% CI: 1.80–2.27), 2.24 (95% CI: 2.01–2.50) for female workers, for difficulty in falling asleep, waking up repeatedly during the sleep, waking up with a feeling of exhaustion, and fatigue, respectively.

Conclusions

Workers who experience change in work time arrangement show a high risk of sleep disturbance in both sexes.

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Research Article

Association of discrimination and presenteeism with cardiovascular disease: the Fourth Korean Working Conditions Survey: Kyusung Kim, Sung-il Cho, Domyung Paek; Ann Occup Environ Med 2019;31:e28. Published online October 11, 2019; DOI: https://doi.org/10.35371/aoem.2019.31.e28

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Background

Discrimination is a representative social determinant of health. Presenteeism is defined as presenting to work despite of illness and is an indicator of group health. We investigated the association of discrimination and presenteeism with cardiovascular disease using Korean data.

Methods

This study used the fourth Korea Working Conditions Survey (2014) data of 27,662 wage workers (employees). Presenteeism and discrimination related to age, sex, education, birth region, and employment type were ascertained. Self-reported cardiovascular disease was also assessed using the survey questionnaire. General and occupational characteristics found to be significant in univariate analyses were entered into a multivariate logistic regression analysis of the association of discrimination and presenteeism with cardiovascular disease. We also calculated the odds ratios of multiple discriminations and/or presenteeism for cardiovascular disease.

Results

In the univariate analyses, sex, age, education, monthly income, employment type, occupation, hours worked per week, workplace scale, and shift work were significantly associated with cardiovascular disease. A multivariate logistic regression analysis adjusted for general and occupational characteristics showed that discrimination and presenteeism were significantly associated with cardiovascular disease. Finally, the association with cardiovascular disease was strongest when both multiple discriminations and presenteeism were present.

Conclusions

Discrimination and presenteeism are associated with cardiovascular disease, and this association was stronger in the presence of multiple types of discrimination and presenteeism.

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Research Article

The association between quality of direct supervisor's behavior and depressive mood in Korean wage workers: the 4th Korean Working Conditions Survey: Cham-Jin Park, Ji-Hoo Yook, Min-Seok Kim, Dongwook Lee, Hyun-Mook Lim, Yun-Chul Hong; Ann Occup Environ Med 2019;31:e16. Published online August 7, 2019; DOI: https://doi.org/10.35371/aoem.2019.31.e16

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Background

Workers spend most of their social lives at work and have relationships of varying nature with people in the workplace. Direct supervisors, in particular, have a direct and lasting impact on workers, which may influence workers' mental health. Depression is very prevalent worldwide, and social concern about the disease is on the rise. The aim of this study is to investigate the effect of direct supervisors' behavior on the depressive mood of Korean wage workers.

Methods

We used data from the 4th Korean Working Conditions Survey held in 2014; 22,212 participants were included in the analysis. The quality of a direct supervisor's behavior was categorized from 0 (= lowest) to 5 (= highest) points. The degree of depressive mood was measured on a scale from “normal mood” to “likely depression” based on the 5-item World Health Organization Well-Being Index (WHO-5) questionnaire. Multiple logistic regression was used to analyze the association between the quality of the direct supervisor's behavior and the depressive mood of wage workers.

Results

After multivariable adjustment, significantly increased odds ratio (OR) for likely depression was found in the 4, 3, 2, 1, and 0 points of the quality of the direct supervisor's behavior compared to 5 points. After stratification for the level of satisfaction with working conditions, the OR of the unsatisfied groups was higher than that of the satisfied groups.

Conclusions

Likely depression was found to be significantly associated with a low quality of direct supervisor's behavior. This association was stronger in workers who were not satisfied with their working conditions. This study suggests that proper management of the direct supervisor's behavior is needed to reduce the risk of depression among Korean wage workers.

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The association between dependent self-employment and self-reported depression/anxiety and sleep disorder in South Korea: Guyeon Won, Jae Bum Park, Kyung-Jong Lee, Ryun Ha, Seungho Lee, Inchul Jeong; Ann Occup Environ Med 2019;31:e13. Published online July 29, 2019; DOI: https://doi.org/10.35371/aoem.2019.31.e13

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Background

Dependent self-employment is precarious employment, which can be vulnerable to mental health problems. This study aimed to investigate the association of dependent self-employment with depression, anxiety, and sleep disorder in South Korea.

Methods

This study used data from the Fourth Korean Working Conditions Survey and included 32,691 paid workers. Dependent self-employment and self-reported depression/anxiety, and sleep disorder were investigated using a questionnaire. Logistic regression analysis was performed to investigate the association between dependent self-employment and mental health problems.

Results

Of the 32,691 paid workers, 2,371 (7.3%) were dependent self-employed workers. The odds ratio (OR) of dependent self-employment for self-reported depression/anxiety was 1.78 (95% confidence interval [CI]: 1.29–2.45) and the OR of dependent self-employment for self-reported sleep disorder was 1.26 (95% CI: 1.01–1.59) compared to other paid workers.

Conclusions

Dependent self-employment is related to an increased risk of self-reported depression/anxiety and sleep disorder in South Korea.

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Research Article

The role of customer service manual on workplace emotional burden in nationwide cross sectional study: Sehyun Yun, Sung-Shil Lim, Jihyun Kim, Young-Kwang Kim, Jong-Uk Won, Jin-Ha Yoon; Ann Occup Environ Med 2019;31:5. Published online February 12, 2019; DOI: https://doi.org/10.1186/s40557-019-0285-9

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Background

We aim to discuss the overall effect of customer service manual (CSM) on service industry workers using Korean Working Condition Survey.

Methods

Out of 50,007 total survey participants, 11,946 customer service workers were included in the current study (5613 men, 6333 women). Answers to survey questions were used to define the use of CSM, emotional burden, emotional dissonance, engaging angry customers and other covariates. Emotional burden included either depressive event or stress level. Odds ratio (OR) with 95% confidence interval (95% CI) of experiencing emotional burden was calculated by logistic regression model. Interaction effect between CSM and engaging angry customer on emotional burden was also estimated.

Results

Out of 11,946 subjects, total of 3279 (27.4%) have experienced emotional burden. OR (95% CI) of experiencing emotional burden was 1.40 (1.19–1.64) in men and 1.25 (1.09–1.44) in women. There was gender difference in interaction effect between the use of CSM and engaging angry customers. In men, OR (95% CI) was 3.16 (1.38–7.23) with additive effect when always engaging angry customers with CSM compared to rarely engaging without CSM, while in women OR (95% CI) was 8.85 (3.96–19.75) with synergistic effect. Moreover, the risk of depressive event increased only in women with OR (95% CI) 2.22 (1.42–3.48).

Conclusions

Our current study highlighted association between emotional burden and CSM in both men and women service workers. Furthermore, women were affected more severely by CSM. The results from current study suggest that CSM should be changed appropriately to benefit workers.

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Research Article

The association between long working hours and work-related musculoskeletal symptoms of Korean wage workers: data from the fourth Korean working conditions survey (a cross-sectional study): Jae-Gwang Lee, Guang Hwi Kim, Sung Won Jung, Sang Woo Kim, June-Hee Lee, Kyung-Jae Lee; Ann Occup Environ Med 2018;30:67. Published online December 3, 2018; DOI: https://doi.org/10.1186/s40557-018-0278-0

Abstract PDF PubReader ePub

Background

It has been reported that long working hours are hazardous to the workers’ health. Especially, work-related musculoskeletal disorders (WMSDs) have been considered as one of the significant health issues in workplace. The objective of this study was to identify the association between long working hours and work-related musculoskeletal symptoms.

Methods

The analysis was conducted using data from the Fourth Korean Working Conditions Survey (KWCS). Subjects of this study were 24,783 wage workers and divided into three groups according to the weekly working hours, which were ≤ 40, 41–52 and > 52 h. The relationship between long working hours and work-related musculoskeletal symptoms was analyzed by multivariate logistic regression method after adjusting for general, occupational characteristics including specific working motions or postures and psychosocial factors.

Results

Approximately 18.4% of subjects worked more than 52 h per week and 26.4 and 16.4% of male subjects and 33.0 and 23.4% of female subjects experienced work-related upper and lower limb pains, respectively, over the last 12 months. Moreover, the prevalence of upper and lower limb pain was increased in both genders as the weekly working hours increased. The odds ratios (ORs) of upper limb pain for those working 41–52 h and more than 52 h per week when adjusted for general, occupational characteristics including specific motions or postures and psychosocial factors were 1.36 and 1.40 for male workers and 1.26 and 1.66 for female workers compared to the reference group, respectively. Furthermore, ORs of lower limb pain for the same weekly working hour groups were 1.26 and 1.47 for male workers and 1.20 and 1.47 for female workers, respectively.

Conclusions

Long working hours were significantly related to work-related musculoskeletal symptoms in Korean wage workers and appropriate interventions should be implemented to reduce long working hours that can negatively affect workers’ health.

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Research Article

Relationship between simultaneous exposure to ergonomic risk factors and work-related lower back pain: a cross-sectional study based on the fourth Korean working conditions survey: Jae-Yeop Kim, Ji-Su Shin, Myeong-Seob Lim, Hyeon-Gyeong Choi, Sung-Kyeong Kim, Hee-Tae Kang, Sang-Baek Koh, Sung-Soo Oh; Ann Occup Environ Med 2018;30:58. Published online September 5, 2018; DOI: https://doi.org/10.1186/s40557-018-0269-1

Abstract PDF PubReader ePub

Background

It is well known that ergonomic risk factors and back pain are related. However, few studies have examined the relationship between simultaneous exposure to these risk factors and back pain in a Korean population. We aimed to investigate the relationship between simultaneous exposure to ergonomic risk factors and work-related lower back pain (LBP) based on the fourth Korean Working Conditions Survey (KWCS).

Method

The fourth KWCS (2014) was used for this study. Chi-square tests and logistic regression were used to assess relationship between 5 ergonomic risk factors and work-related LBP. We also analyzed the relationship between simultaneous exposure to 2 risk factors and work-related LBP.

Results

All 5 ergonomic risk factors (fatigue-inducing and painful posture; lifting or moving people; dragging, pushing, or moving heavy objects; standing posture; and repetitive hand or arm movements) were significantly correlated with work-related LBP in the severe exposure group (adjusted odd ratios [aOR] 5.09, 95% confidence interval [CI] 4.46–5.83; aOR 1.98, 95% CI 1.62–2.42; aOR 2.09, 95% CI 1.82–2.40; aOR 1.79, 95% CI 1.60–2.01; aOR 2.04, 95% CI 1.82–2.30, respectively). When exposed to 2 risk factors simultaneously, the relationship between exposure and work-related LBP was not greater than exposure to only 1 risk factor in our study (usually exposed to ‘fatigue-inducing or painful posture’ aOR 2.17, 95% CI 2.02–2.34; high exposure to both ‘fatigue-inducing or painful posture’ and ‘dragging, pushing, or moving heavy objects’ aOR 2.00, 95% CI 1.82–2.20).

Conclusions

There was a strong relationship between severe exposure to each ergonomic risk factor and work-related LBP. However, when exposed to 2 ergonomic risk factors simultaneously, the relationship between exposure and work-related LBP was not stronger than when exposed to only 1 risk factor in our study.

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Research Article

Effect of teacher’s working conditions on voice disorder in Korea: a nationwide survey: Yi-Ryoung Lee, Hyoung-Ryoul Kim, Seyoung Lee; Ann Occup Environ Med 2018;30:43. Published online July 3, 2018; DOI: https://doi.org/10.1186/s40557-018-0254-8

Abstract PDF PubReader ePub

Background

Korean teacher’s working conditions are deteriorating. There is concern about the deterioration of teachers’ health and voice disorder is one of the most common problems. Teacher’s vocal health is important for them and their students. The aim of the present study was to investigate working conditions that may affect voice disorders.

Methods

In all, 79 primary and secondary schools were randomly selected for a nationwide school system survey (N = 3345). In 64 schools, 1617 (48.3%) teachers participated via a postal self-report questionnaire from June 2016 to August 2016. After applying inclusion and exclusion criteria, data from 1301 teachers’ were used for analysis. Multiple logistic regression was used to investigate the associations between general, work-related factors, and frequent voice disorders (fVDs) to estimate the adjusted odds ratio(aOR).

Results

Teachers who reported voice symptoms more than once a week (fVD) made up 11.6%. In a multiple logistic regression, fVD was significantly associated with female, difficulty in applying for sick leave as needed, music teachers (primary school), and less than 6 h of sleep per day (primary school). The aOR for fVD was 2.72 (0.83–8.10) in the longest working hours group (> 52 h/wk) among the primary school teachers, and 1.90 (0.80–4.73) in the longest class hour group (≥ 20 h/wk), 1.52 (0.90–2.62) in homeroom teachers among the secondary school teachers, but not statistically significant.

Conclusions

Korean teachers’ working conditions are associated with fVDs. The school health system must take steps to prevent and treat voice disorders of teachers.

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Research Article

The association between Korean employed workers’ on-call work and health problems, injuries: Chulin Baek, Jae Bum Park, Kyungjong Lee, Jaehyuk Jung; Ann Occup Environ Med 2018;30:19. Published online March 20, 2018; DOI: https://doi.org/10.1186/s40557-018-0225-0

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Background

On-call work is a form of work that requires the person to work at any time during the on-call period. Thus, on-call work is often regarded as one of the most severe stress factors. This study investigates the associations between on-call work and health problems, injuries.

Methods

This study was based on the 3rd Korean Working Conditions Survey. Total of 29,246 employed workers who had been working for at least 1 year were included. Logistic regression analysis was performed to investigate the association between on-call work and health problems, injuries.

Results

The odds ratios for on-call workers in terms of physical health problems, psychological health problems, and injuries were 1.33 (95% confidence interval [CI] 1.22-1.44), 1.31 (95% CI 1.08-1.60), and 2.76 (95% CI 2.26-3.37), respectively. Analysis of the detailed symptoms revealed odds ratios in on-call workers of 2.06 for hearing problems (95% CI 1.63-2.62); 1.71 for skin problems (95% CI 1.38-2.12); 1.22 for back pain (95% CI 1.08-1.38); 1.23 for muscular pains in upper limbs (95% CI 1.12-1.34); 1.27 for muscular pains in lower limbs (95% CI 1.15-1.40); 1.46 for headache, eye fatigue (95% CI 1.32-1.60); 1.37 for abdominal pain (95% CI 1.02-1.85); 1.43 for depression or anxiety disorders (95% CI 1.07-1.93); 1.36 for fatigue (95% CI 1.24-1.49); and 1.41 for insomnia and general sleep difficulties (95% CI 1.13-1.76).

Conclusions

The present study found that on-call work results in an increased risk of health problems and injuries. This study is the result of analyses of broad range of the job spectrum in Korean employed workers; thus, future studies are necessary to determine the effects of on-call work in various job groups.

Citations

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On-call work and depressive mood: A cross-sectional survey among rural migrant workers in China
Qingqing Xu, Liyun Wang, Yiwen Zhang, Xia Jiang
Frontiers in Psychology.2023;[Epub] CrossRef
Changes in the Health Indicators of Hospital Medical Residents During the Four-Year Training Period in Korea
Ji-Sung Ahn, Seunghyeon Cho, Won-Ju Park
Journal of Korean Medical Science.2022;[Epub] CrossRef
Prevalence and risk factors associated with poor sleep among firefighters in Taiwan: An observational study
Cheng-Yao Lin, Shih-Bin Su, Ya-Ting Hu, Cheau-Jane Peng, Kou-Huang Chen, Kow-Tong Chen
Medicine.2022; 101(44): e31570. CrossRef

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Research Article

Association between supervisors’ behavior and wage workers’ job stress in Korea: analysis of the fourth Korean working conditions survey: Shin Uk Kang, Byeong Jin Ye, ByoungGwon Kim, Jung Il Kim, Jung Woo Kim; Ann Occup Environ Med 2017;29:43. Published online October 11, 2017; DOI: https://doi.org/10.1186/s40557-017-0199-3

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Background

In modern society, many workers are stressed. Supervisors’ support or behavior can affect the emotional or psychological part of the worker. The purpose of this study is to investigate the effect of supervisor’s behavior on worker’s stress.

Methods

The study included 19,272 subjects following the assignment of weighted values to workers other than soldiers using data from the Fourth Korean Working Condition Survey. Supervisors’ behavior was measured using 5 items: “supervisor feedback regarding work,” “respectful attitude,” “good conflict-resolution ability,” “good work-related planning and organizational ability,” and the encouragement of participation in important decision making. Job stress was measured using 1 item: “I experience stress at work.” Multiple logistic regression analysis was performed to examine the effects of supervisors’ behavioral, general, occupational, and psychosocial characteristics on job stress in workers. Organizational characteristics associated with supervisors’ behavior were also analyzed.

Results

The results showed that supervisors’ provision of feedback regarding work increased workers’ job stress (OR = 1.329, 95% CI = 1.203 ~ 1.468). When a supervisor respect workers (OR = 0.812, 95% CI = 0.722 ~ 0.913) or good at planning and organizing works (OR = 0.816, 95% CI: 0.732 ~ 0.910), workers’ job stress decreased. In particular, the two types of supervisor behaviors, other than feedback regarding work, were high in private-sector organizations employing less than 300 employees.

Conclusion

Supervisors’ behavior influenced job stress levels in workers. Therefore, it is necessary to increase education regarding the effects of supervisors’ behavior on job stress, which should initially be provided in private-sector organizations with up to 300 employees.

Citations

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Job security in the apparel industry in Sri Lanka
Wasantha Rajapakshe, T.G.S.D. Chandrasiri
Work Organisation, Labour & Globalisation.2023;[Epub] CrossRef
Association between night work and dyslipidemia in South Korean men and women: a cross-sectional study
Jae Hong Joo, Doo Woong Lee, Dong-Woo Choi, Eun-Cheol Park
Lipids in Health and Disease.2019;[Epub] CrossRef

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Research

The association between perceived discriminations and well-being in Korean employed workers: the 4th Korean working conditions survey: Hee Sung Lee, Guang Hwi Kim, Sung Won Jung, June-Hee Lee, Kyung-Jae Lee, Joo Ja Kim; Ann Occup Environ Med 2017;29:46. Published online October 2, 2017; DOI: https://doi.org/10.1186/s40557-017-0205-9

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Background

Around the globe, discrimination has emerged as a social issue requiring serious consideration. From the perspective of public health, the impact of discrimination on the health of affected individuals is a subject of great importance. On the other hand, subjective well-being is a key indicator of an individual’s physical, mental, and social health. The present study aims to analyze the relationship between Korean employed workers’ subjective health and their exposure to perceived discrimination.

Methods

The Fourth Korean Working Conditions Survey (KWCS, 2014) was conducted on a representative sample of the economically active population aged 15 years or older, who were either employees or self-employed at the time of interview. After removing inconsistent data, 32,984 employed workers were examined in this study. The data included general and occupational characteristics, perceived discrimination, and well-being. Well-being was measured through the WHO-Five index (1998 version). Multiple logistic regression analysis was used to examine the association between perceived discrimination and well-being.

Result

As a group, employed workers who were exposed to discrimination had a significantly higher likelihood of “poor well-being” than their counterparts who were not exposed to discrimination. More specifically, the workers exposed to age discrimination had an odds ratio(OR) of 1.51 (95% CI: 1.36–1.68), workers exposed to discrimination based on educational attainment had an OR of 1.43 (95% CI: 1.26–1.61), and workers exposed to discrimination based on employment type had an OR of 1.68 (95% CI: 1.48–1.91) with respect to poor well-being.

Furthermore, workers exposed to a greater number of discriminatory incidents were also at a higher risk of “poor well-being” than their counterparts who were exposed to fewer such incidents. More specifically, the workers with three exposures to discrimination had an OR of 2.60 (95% CI: 1.92–3.53), the workers with two such exposures had an OR of 1.69 (95% CI: 1.44–1.99), and the workers with one such exposure had an OR of 1.32 (95% CI: 1.20–1.45).

Conclusion

The present study found that discrimination based on age, educational attainment, or employment type put workers at a higher risk of “poor well-being,” and that the greater the exposure to discrimination, the higher the risk of poor well-being.

Citations

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Online education and the mental health of faculty during the COVID-19 pandemic in Japan
Yosuke Kita, Shoko Yasuda, Claudia Gherghel
Scientific Reports.2022;[Epub] CrossRef
Association Between Presenteeism/Absenteeism and Well-being Among Korean Workers
Wonjeong Jeong, Yun Kyung Kim, Sarah Soyeon Oh, Jin-Ha Yoon, Eun-Cheol Park
Journal of Occupational & Environmental Medicine.2020; 62(8): 574. CrossRef
The relationship between precarious employment and subjective well-being in Korean wage workers through the Cantril ladder Scale
Go Choi, Shin-Goo Park, Youna Won, Hyeonwoo Ju, Sung Wook Jang, Hyung Doo Kim, Hyun-Suk Jang, Hwan-Cheol Kim, Jong-Han Leem
Annals of Occupational and Environmental Medicine.2020;[Epub] CrossRef
Association of discrimination and presenteeism with cardiovascular disease: the Fourth Korean Working Conditions Survey
Kyusung Kim, Sung-il Cho, Domyung Paek
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Second hand smoke exposure in workplace by job status and occupations
Hyunhee Park, Sung-il Cho, Changhun Lee
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Research Article

Relationship of workplace violence and perpetrators on sleep disturbance-data from the 4th Korean working conditions survey: Taejun Yoo, Byeongjin Ye, Jung-Il Kim, Siwoo Park; Ann Occup Environ Med 2016;28:59. Published online October 19, 2016; DOI: https://doi.org/10.1186/s40557-016-0142-z

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Objective

The present study analyzed relationship of workplace violence and perpetrators of violence on sleep disturbance among wage workers in Korea.

Methods

The present study used data from the 4th Korean Working Conditions Survey (KWCS) of 2014 in selecting a total of 25,138wage workers as the study population, which excluded those who failed or refused to respond to questions required for the present study. The workplace violence experience group included people who satisfied at least one of six relevant criteria (verbal abuse, unwanted sexual attention, threatening or humiliating behavior, physical violence, bullying/harassment, and sexual harassment) and the group was divided according to whether the perpetrator of violence was a client or colleague. Presence of sleep disturbance was determined based on subjective symptoms felt within the past 12 months by each individual. A multiple logistic regression analysis was performed to identify the effects on sleep distance according to general, occupational, and psychosocial characteristics, as well as the types of workplace violence and perpetrators of violence.

Results

Workplace violence was found as a factor affecting sleep disturbance (OR = 3.773, 95 % CI = 3.058–4.655), and with respect to perpetrators of violence, complaint of sleep disturbance symptoms was higher when the perpetrator was a colleague or boss (OR = 5.688, 95 % CI 4.189–7.723) than a client (OR = 2.992, 95 % CI 2.301–3.890).

Conclusion

Workplace violence had an effect on occurrence of sleep disturbance and when the perpetrators of violence was a boss or colleague at work, the risk for symptoms such as sleep disturbance increased, which indicated the need for appropriate intervention from a workplace healthcare perspective, including preventive education of workplace violence among employees.

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Exploring the Impact of Workplace Violence on the Mental Health of Chinese Correctional Officers: A JD-R Model Approach
Zheng Zhang, Yan Li, Siyuan Wang, Jizhi Wang, Ying Huang, Xiaoping Wang, Huijuan Guo, Jiansong Zhou
Psychology Research and Behavior Management.2024; Volume 17: 2865. CrossRef
Implementation of a workplace protection system and its correlation with experiences of workplace violence: a cross-sectional study
Eun-Mi Baek, BoKim Lee
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Impact of Workplace Mistreatment on Employees’ Health and Well-Being in Chinese Firms: A Systematic Review
Cynthia Atamba, John Kipngetich Mosonik, David Stuckler, Lincoln Jisuvei Sungu, Cornelia Melinda Adi Santoso, Halima Habuba Mohamed
SAGE Open.2023;[Epub] CrossRef
Associations Between Workplace Violence, Mental Health, and Physical Health among Korean Workers: The Fifth Korean Working Conditions Survey
Hae Ran Kim
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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
Annals of Occupational and Environmental Medicine.2022;[Epub] CrossRef
Workplace Violence in Workers with Multi-Party Employment Arrangements: Results from the Korean National Representative Survey
Yeogyeong Yoon, Kyunghee Jung-Choi
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Predictors of Satisfaction With Work Environment in the Context of a Mismatch in Working Hours: A Nationwide, Large-Scale, Cross-Sectional Study
Robert Kim
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Safaa M. El-Zoghby, Maha E. Ibrahim, Nancy M. Zaghloul, Shaimaa A. Shehata, Rasha M. Farghaly
Human Resources for Health.2022;[Epub] CrossRef
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Jungsun Park, Yangho Kim
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Associations between multiple occupational exposures and sleep problems: Results from the national French Working Conditions survey
Sandrine Bertrais, Noëmie André, Marilyne Bèque, Jean‐François Chastang, Isabelle Niedhammer
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Sleep Problems and Workplace Violence: A Systematic Review and Meta-Analysis
Nicola Magnavita, Enrico Di Stasio, Ilaria Capitanelli, Erika Alessandra Lops, Francesco Chirico, Sergio Garbarino
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The association between long working hours and work-related musculoskeletal symptoms of Korean wage workers: data from the fourth Korean working conditions survey (a cross-sectional study)
Jae-Gwang Lee, Guang Hwi Kim, Sung Won Jung, Sang Woo Kim, June-Hee Lee, Kyung-Jae Lee
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef
The association between perceived discriminations and well-being in Korean employed workers: the 4th Korean working conditions survey
Hee Sung Lee, Guang Hwi Kim, Sung Won Jung, June-Hee Lee, Kyung-Jae Lee, Joo Ja Kim
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef

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Research Article

Association between employment status and self-rated health: Korean working conditions survey: Kimin Kwon, Jae Bum Park, Kyung-Jong Lee, Yoon-Sik Cho; Ann Occup Environ Med 2016;28:43. Published online September 8, 2016; DOI: https://doi.org/10.1186/s40557-016-0126-z

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Background

This research was conducted with an aim of determining the association between employment status and self-rated health.

Methods

Using the data from the Third Korean Working Conditions Survey conducted in 2011, We included data from 34,783 respondents, excluding employers, self-employed workers, unpaid family workers, others. Self-rated health was compared according to employment status and a logistic regression analysis was performed.

Results

Among the 34,783 workers, the number of permanent and non-permanent workers was 27,564 (79.2 %) and 7,219 (20.8 %). The risk that the self-rated health of non-permanent workers was poor was 1.20 times higher when both socio-demographic factors, work environment and work hazards were corrected.

Conclusions

In this study, perceived health was found to be worse in the non-permanent workers than permanent workers. Additional research should investigate whether other factors mediate the relationship between employment status and perceived health.

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Annals of Occupational and Environmental Medicine.2023;[Epub] CrossRef
Self-rated health may be a predictor for metabolic syndrome and high hs-CRP prevalences in healthy adults in South Korea: Based on the 2015 Korea National Health and Nutrition Examination Survey
Mi Joung Kim, In Woo Kim
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Na Rae Jeong, Seung Hun Lee, Yun Jin Kim, Jeong Gyu Lee, Yu Hyeon Yi, Yougn Jin Tak, Hye Rim Hwang, Gyu Lee Kim, Sang Yeoub Lee, Young Hye Cho, Eun Ju Park, Young In Lee, Jung In Choi
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The association between perceived discriminations and well-being in Korean employed workers: the 4th Korean working conditions survey
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Research Article

The association between Korean workers’ presenteeism and psychosocial factors within workplaces: Yun-Sik Cho, Jae Bum Park, Kyung-Jong Lee, Kyoung-Bok Min, Chul-In Baek; Ann Occup Environ Med 2016;28:41. Published online September 7, 2016; DOI: https://doi.org/10.1186/s40557-016-0124-1

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Background

Presenteeism, a concept that has recently undergone active study, is the act of attending work while sick. This study investigates the association between presenteeism and various psychosocial factors within workplaces.

Methods

This study analyzed 29246 wage earners from the third Korean Working Conditions Survey (KWCS, 2011) data using the logistic regression analysis to investigate the association between presenteeism and various psychosocial factors within workplaces.

Results

Among the 29246 wage earners, 6347 (21.7 %) showed presenteeism. Those who experienced age discrimination at work (adjusted odds ratio (aOR) 1.77: 95 % CI 1.56–2.00), educational background discrimination (aOR 1.35: 95 % CI 1.22–1.51), regional discrimination (aOR 1.55: 95 % CI 1.31–1.83), sexual discrimination (aOR 1.65: 95 % CI 1.41–1.94), employment type discrimination (aOR 2.13: 95 % CI 1.89–2.40), physical violence (aOR 1.92: 95 % CI 1.45–2.55), sexual harassment (aOR 2.90: 95 % CI 2.01–4.19), job insecurity (aOR 1.36: 95 % CI 1.18–1.56), work–life imbalance (aOR 1.38: 95 % CI 1.29–1.47), low job satisfaction (aOR 2.04: 95 % CI 1.91–2.17), no colleague support (aOR 1.11: 95 % CI 1.02–1.21), job stress (aOR 1.89: 95 % CI 1.76–2.02), emotional labor (aOR 1.50: 95 % CI 1.41–1.60), high work intensity (aOR 1.31: 95 % CI 1.23–1.38), and 3 groups of job strain that are passive group (aOR 1.09: 95 % CI 1.00–1.18), active group (aOR 1.39: 95 % CI 1.28–1.51), and high strain group (aOR 1.35: 95 % CI 1.24–1.46) showed an increased risk of presenteeism compared to their respective counterparts (p < 0.01).

Conclusions

The study results confirmed the association between presenteeism and various psychosocial factors within workplaces. Considering that presenteeism negatively affects productivity and the mental and physical health of individuals, managing various psychosocial factors within workplaces is proposed to reduce presenteeism.

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Research Article

Association between night work and cardiovascular diseases: analysis of the 3rd Korean working conditions survey: Sungjin Park, Juhyun Nam, Jong-Ku Lee, Sung-Soo Oh, Hee-Tae Kang, Sang-Baek Koh; Ann Occup Environ Med 2015;27:15. Published online May 11, 2015; DOI: https://doi.org/10.1186/s40557-015-0064-1

Abstract PDF PubReader ePub

Objectives

This study was conducted to investigate the relationship between night work and cardiovascular diseases among wage workers in Korea.

Methods

The study was based on the 3rd Korean Working Conditions Survey (KWCS; 2011). This study included 29,711 wage workers. We used the chi-squared test and logistic regression to examine the association between cardiovascular diseases and night work and cumulative night work.

Results

Among all of the paid workers, 12.5% reported doing night work ≥ 1 day per month. Night work was significantly associated with an increased risk of cardiovascular diseases (odds ratio [OR] 1.58, 95% confidence interval [CI] 1.11-2.25). Also, compared to the group that did not do night works, the group with higher cumulative night work demonstrated an increased risk for cardiovascular diseases (OR 1.81, 95% CI 1.19-2.74).

Conclusions

This study suggests that night work is significantly associated with cardiovascular diseases.

Citations

Citations to this article as recorded by

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