Annals of Occupational and Environmental Medicine

Chang Ki Choi

3 Articles

Occupational Stress and MMPI-2 Profile of Workers in Some Plants Undergoing Labor Dispute: Chang Ki Choi, Chul Gab Lee, Han Soo Song, Sang Kon Yoo, Seung Yong Shin, Sul Ha Kim; Korean Journal of Occupational and Environmental Medicine 2012;24(4):384-396. Published online December 31, 2012; DOI: https://doi.org/10.35371/kjoem.2012.24.4.384

OBJECTIVES
To identify changes in relationships with superiors or colleagues at work and family members and social networks at home, based on occupational stress and psychological characteristics in during the process of restructuring some plants undergoing a long-term labor dispute.
METHODS
This study invested 213 workers involved in a long-term labor dispute using the KOSS (Korean Occupational Stress Scale) and the MMPI-2 (Minnesota Multiphasic Personality Inventory) and questionnaires. The KOSS and MMPI-2 scores in accordance with aggressiveness of trade union activity and changes in human relationships were compared. In addition, the odds ratio of whether there were differences in health behavior (perception of health status, smoking, alcohol abuse, medical treatment) and the absenteeism rate was calculated by logistic regression analysis.
RESULTS
For members of the aggressiveness of trade union activity group, the rate at which the relationship between superiors or colleagues deteriorated was high, as was the total KOSS score, occupational system and lack of reward score of KOSS subclass. The depression subclass score of MMPI-2 was generally high, while the score of hypochondriasis, hysteria, psychopathic deviate, hypomania was high, and social introversion was low in the active group. In cases in which there were high score of psychopathic deviate, hypomania and paranoia, there were also signs of negative health behavior.
CONCLUSIONS
Occupational stress caused by a long-term labor dispute, accompanied with depression can result in an aggressive, hostile and vulnerable personalities and have a negative impact on health behavior.

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Changes of depression and job stress in workers after merger without downsizing
Jun Ick Jung, Jun Seok Son, Young Ouk Kim, Chang Ho Chae, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Young Hoo Shin, Jea Chul Ha
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef
Minnesota multiphasic personality inventory as related factor for post traumatic stress disorder symptoms according to job stress level in experienced firefighters: 5–year study
In-Sung Chung, Mi-Young Lee, Sung-Won Jung, Chang-Wook Nam
Annals of Occupational and Environmental Medicine.2015;[Epub] CrossRef

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Relationship between Occupational Stress-Emotional Labor and Musculoskeletal Symptoms and Experience of Absence or Early Leave in Some Civil Affairs Officials: Sang Kon Yoo, Chang Ki Choi, Han Soo Song, Chul Gab Lee; Korean Journal of Occupational and Environmental Medicine 2011;23(2):192-202. Published online June 30, 2011; DOI: https://doi.org/10.35371/kjoem.2011.23.2.192

Abstract PDF

OBJECTIVES
The objectives of this study are to identify the relationship between the Korean occupational stress scale (KOSS) and emotional labor, and to study the association between emotional labor and musculoskeletal symptoms, absence or early leave due to physical problems among civil affairs officials.
METHODS
391 public workers who provide social insurance service were analyzed. A structured self-reported questionnaire was used to assess sociodemographics, job stress, emotional labor, musculoskeletal symptoms and the experience of absence or early leave due to physical problems. For a comprehensive understanding of the relationship among these factors, multiple logistic regression analysis was used.
RESULTS
The Pearson coefficient was 0.409 between the job demand of KOSS and the emotional labor score. The odds ratio of musculoskeletal symptoms is 2.32(95% CI: 1.17~4.61), 2.48(95% CI: 1.15~5.33) in the groups of moderate and, high emotional labor score, respectively, compared to the low score group. On the other hand, the odds ratio of the experience of absence or early leave due to physical problems is 2.43(95% CI: 1.24~4.76) and, 3.08(95% CI: 1.44~6.57) in the same groups.
CONCLUSIONS
Emotional labor acts as a factor of job demand of KOSS, and has an effect on musculoskeletal symptoms and absence or early leave among civil affairs officials.

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The association between occupational stress level and health-related productivity loss among Korean employees
Jonghee Chung, Jin-Hyo Kim, Jae Yoon Lee, Hee Seok Kang, Dong-wook Lee, Yun-Chul Hong, Mo-Yeol Kang
Epidemiology and Health.2022; 45: e2023009. CrossRef
Mental health and quality of life in firefighters working on the scene in South Korea: Focus on the capital area and growth promotion area
Woo‐Hyuk Jang, Da‐Som Kim, Hye‐Won Park, Ji‐Hoon Kim
Brain and Behavior.2020;[Epub] CrossRef
Relationship between concealment of emotions at work and musculoskeletal symptoms: results from the third Korean working conditions survey
Kyungyong JUNG, Dae Hwan KIM, Ji Young RYU
Industrial Health.2018; 56(5): 367. CrossRef
The Association of Workplace Psychosocial Factors and Musculoskeletal Pain Among Korean Emotional Laborers
Kiook Baek, Seonhee Yang, Miyoung Lee, Insung Chung
Safety and Health at Work.2018; 9(2): 216. CrossRef
Changes of depression and job stress in workers after merger without downsizing
Jun Ick Jung, Jun Seok Son, Young Ouk Kim, Chang Ho Chae, Chan Woo Kim, Hyoung Ouk Park, Jun Ho Lee, Young Hoo Shin, Jea Chul Ha
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef
The relationship between emotional labor status and workplace violence among toll collectors
Yosub Joo, Jeongbae Rhie
Annals of Occupational and Environmental Medicine.2017;[Epub] CrossRef
Emotional Labor: Links to Depression and Work-Related Musculoskeletal Disorders in Call Center Workers
Hye-Jin Kim, Jina Choo
Workplace Health & Safety.2017; 65(8): 346. CrossRef
Relationships among Emotional Labor, Self Efficacy, and Burnout of Employees in Public Health Centers
Hyunkyung Choi, Yeongmi Ha, Seungkyoung Yang
Korean Journal of Occupational Health Nursing.2016; 25(1): 75. CrossRef
Effect of Emotional Labor and Stress on Premenstrual Syndrome among Hospital Nurses
Sun Hee Lee, Ji-Ah Song, Myung Haeng Hur
Korean Journal of Women Health Nursing.2016; 22(1): 61. CrossRef
The Relationship between Emotional Working Hour and Muscle Pain
Bokim Lee
Korean Journal of Occupational Health Nursing.2014; 23(4): 269. CrossRef
Fatigue and related factors among hotel workers: the effects of emotional labor and non-standard working hours
Ju Jong Lee, Hyun Jey Moon, Kyung-Jae Lee, Joo Ja Kim
Annals of Occupational and Environmental Medicine.2014;[Epub] CrossRef
Emotional Labor in Korean Local Government: Testing the Consequences of Situational Factors and Emotional Dissonance
Mark Wilding, Kyungjin Chae, Jiho Jang
Public Performance & Management Review.2014; 38(2): 316. CrossRef

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Radiological Flattening of Lumbar Lordosis and Related Factors in Some Korean Farmers: Han Soo Song, Sang Kon Yoo, Chang Ki Choi, Chul Gab Lee, Kyung Suk Lee; Korean Journal of Occupational and Environmental Medicine 2010;22(4):279-289. Published online December 31, 2010; DOI: https://doi.org/10.35371/kjoem.2010.22.4.279

Abstract PDF

OBJECTIVES
To determine if agricultural work is related to radiological flattening of lumbar lordosis, and to identify the relationship between of back pain and flat back in selected Korean farmers.
METHODS
Between June 2006 and July 2008, 414 farmers, 155 (37.4%) males and 259 (62.6%) females participated in this study. We collected data on hazardous agricultural work postures and other factors from interviews, surveys, and x-ray views of lateral lumbar. The operational definition of a flat back was below -1 SD of lordotic angle, with a normal distribution between L1 and S1 level. Logistic regression analysis was conducted to evaluate the relationship between flat back and hazardous working posture ratio, sex, the severity of back pain.
RESULTS
Mean lordotic angle was 42.9+/-15.7degrees. Flat back had a higher prevalence in the females (24.7%) than the males (5.8%). The odds ratio of flat back risk is 3.30 (95% CI: 1.46~7.46) in the females compared to the males, 1.31 (95% CI: 0.61~2.79), 4.11 (95% CI: 1.77~9.55) in the group of hazardous working posture ratio compared to the low risk group, 2.78 (95% CI: 1.27~6.07), 5.74 (95% CI: 2.27~14.49) in the group of L4-L5 disc space narrowing compared to normal group, 3.06 (95% CI: 1.27~7.31), 5.45 (95% CI: 1.70~17.46) in the group of lumbar spine compression fracture compared to no fracture. Odds ratio of severe back pain is 2.29 (95% CI: 1.12~4.72) in the group of flat back compared to normal group.
CONCLUSIONS
Hazardous agricultural working postures, such as 'low- lifting, pulling, pushing work and high- squatting posture work' are associated with flat back. Low back pain is significantly associated with flat back group in female farmers.

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Effect of thigh muscle fatigue on the biomechanical factors of the lower limbs when walking in a squatted position
Wan-Ki Hong, Chul-Gab Lee, Dae-Sik Ko
Journal of Physical Therapy Science.2016; 28(3): 1007. CrossRef
Epidemiology of Scrub Typhus and the Eschars Patterns in South Korea from 2008 to 2012
Ji-Hyuk Park, Sun-Ja Kim, Seung-Ki Youn, Kisoo Park, Jin Gwack
Japanese Journal of Infectious Diseases.2014; 67(6): 458. CrossRef
Work-related musculoskeletal disorders in Korean farmers
Chul Gab Lee
Journal of the Korean Medical Association.2012; 55(11): 1054. CrossRef
Foot Type Classification of Korean Male Farmers for Ergonomic Work Shoes Design
Dohee Kim, Kyoung Suk Hwang, Kyung Suk Lee
Journal of the Ergonomics Society of Korea.2012; 31(6): 773. CrossRef

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