Annals of Occupational and Environmental Medicine

Original Article

Risk Factors of Work-related Musculoskeletal Symptoms Among Motor Engine Assembly Plant Workers: Young Ki Kim, Dong Mug Kang, Sang Baek Koh, Byung Chul Son, Jung Won Kim, Dae Whan Kim, Gun Hyung Kim, Seong Ho Han; Korean Journal of Occupational and Environmental Medicine 2004;16(4):488-498. Published online December 31, 2004; DOI: https://doi.org/10.35371/kjoem.2004.16.4.488

OBJECTIVES
To determine the synthetic risk factors of musculoskeletal disorders, and to examine effect on musculoskeletal symptoms of physical work intensity and change of work intensity.
METHODS
Self-administered questionnaraire survey was conducted on 588 motor engine assembly workers, in Chanwon, Kyungnam provance, Korea, from April 1 to May 31, 2003. The contents of the questionnaire investigation included general characteristic items, workrelated characteristic items, presence of musculoskeletal symptoms, ergonomic risk factors items, job stress items, current physical work intensity and changes of work intensity items. The results underwent statistical analysis with frequency test, t-test, and logistic regression. The statistical significance level was 0.05, and SAS(v8.1) was used.
RESULTS
Multiple logistic regression analysis was used to examine the relationship between risk factors and musculoskeletal symptoms. From the results, significant variables were high Quick Exposure Check (QEC) score, high job demand control, physical work intensity, change of work intensity.
CONCLUSION
Among the known risk factors of musculoskeletal disorders, the outbreak of musculoskeletal symptoms was confirmed to be correlated with age, tenure, ergonomic risk factors, and job stress. Physical work intensity and the changes of work intensity were also related to musculoskeletal symptoms.

Citations

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Evaluation of the prevalence of musculoskeletal symptoms, presumptive diagnosis, medical care use, and sick leave among female school meal service workers
Young Hoon Moon, Young Joon Yang, Sang Yoon Do, Jae Yoon Kim, Chul Gab Lee, Hong Jae Chae, Soo Hyeon Kim, Han Soo Song
Annals of Occupational and Environmental Medicine.2019;[Epub] CrossRef
Work-related Musculoskeletal Disorders in Korea Provoked by Workers’ Collective Compensation Claims against Work Intensification
Dongmug Kang, Youngki Kim, Young-Il Lee, Sangbaek Koh, Inah Kim, Hoonkoo Lee
Annals of Occupational and Environmental Medicine.2014;[Epub] CrossRef
Musculoskeletal Symptoms and Its Related Factors among Male Workers in a Nonferrous Manufacturing Industry
Yeon-Ok Jeong, Young-Chae Cho
Journal of the Korea Academia-Industrial cooperation Society.2012; 13(8): 3552. CrossRef
Work-Related Musculoskeletal Symptoms Among Dairy Farmers in Gyeonggi Province, Korea
Ji-Hyuk Park, Hyun-Sul Lim, Kwan Lee
Journal of Preventive Medicine and Public Health.2010; 43(3): 205. CrossRef
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Kyoo Sang Kim, Min Gi Kim
Safety and Health at Work.2010; 1(2): 158. CrossRef

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Original Article

The relationship of working hours and work intensity with sleep disturbance among continuous 12 hours day and night shift workers in the automobile factory in Korea: Mia Son; Korean Journal of Occupational and Environmental Medicine 2004;16(1):13-24. Published online March 31, 2004; DOI: https://doi.org/10.35371/kjoem.2004.16.1.13

Abstract PDF

BACKGROUND
S: The objective of this study is to explore the relationships of working hours and work intensity with sleep disturbance among 12-hour shift workers in the automobile factory in Korea.
METHODS
A questionnaire and a sleep diary were distributed among 2200 (25% of total workers) and 300 workers who were randomly selected in the 8700 workers in one car factory. Among the 300 randomely selected workers, who were randomly selected, 262 workers filled out a sleep diary. For a questionnaire, 2200 (25%) among 8700 workers were randomly selected, 1200 (54% response rate) of whom filled out the questionnaire. The cross-sectional questionnaire and the sleep diary during 14 consecutive days were distributed and collected by workers' representatives, who were trained for the participatory action research in this study. One hundred and sixty workers' sleep diaries and questionnaires were merged by the same worker and used for the analysis in this study. Logistic regression analysis for repeated measurements was modeled using the prevalence of severe sleepiness at work (i.e. Karonlinska Sleepiness Scale 7 or higher) as dependent variable and working hours, sleep pattern, work intensity and health behaviours as independent variables.
RESULTS
The prevalence of severe sleepiness at the end of work was more than 60% after finishing night shift in the automobile factory. The main risk factors related to the severe sleepiness at the end of work were the night shift, long working hours more than 10 hours, the higher frequency of night shift per month, less free time between shifts, poor quality of sleep, deficit of sleeping hours and intensified work (reducing tendency of rest time per day and increasing tendency of additional working time) such as increasing tendency of absolute surplus value.
DISCUSSION
We suggest that the 12-hour shift system, long working hours, intensified work and poor quantity as well as quality of sleep were the main risk factors for the severe sleepiness among the shift workers in the automobile factory in Korea.

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Effects of Labor Intensity and Fatigue on Sleep Quality of Clinical Nurses
Mi Jin Seol, Byoung Sook Lee, Soo-Kyoung Lee
Journal of Korean Academy of Nursing Administration.2018; 24(4): 276. CrossRef
Factors related with quality on sleep of daytime workers
Bu-il Kim, Seong-yong Yoon, Jin-seok Kim, Kuck-Hyeun Woo, Seong-yong Cho, Ho Lee, Jong-min An
Annals of Occupational and Environmental Medicine.2018;[Epub] CrossRef
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
Annals of Occupational and Environmental Medicine.2016;[Epub] 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

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