Association of long working hours with accidents and suicide mortality in Korea
- Title
- Association of long working hours with accidents and suicide mortality in Korea
- Author
- 김인아
- Keywords
- depression; injury; karoshi; KNHANES; Korean National Health and Nutrition Examination Survey; mental health; occupational; overwork; work hour; working time; work time
- Issue Date
- 2020-02
- Publisher
- SCANDINAVIAN JOURNAL WORK ENVIRONMENT & HEALTH
- Citation
- SCANDINAVIAN JOURNAL OF WORK ENVIRONMENT & HEALTH, v. 46, no. 5, page. 480-487
- Abstract
- Objectives The deleterious health effects of long working hours have been previously investigated, but there is a dearth of studies on mortality resulting from accidents or suicide. This prospective study aims to examine the association between working hours and external-cause mortality (accidents and suicide) in Korea, a country with some of the longest working hours in the world.
Methods Employed workers (N=14 484) participating in the Korean National Health and Nutrition Examination Survey (KNHANES) were matched with the Korea National Statistical Office's death registry from 2007-2016 (person-years = 81 927.5 years, mean weighted follow-up duration = 5.7 years). Hazard ratios (HR) for accident (N=25) and suicide (N=27) mortality were estimated according to weekly working hours, with 35-44 hours per week as the reference.
Results Individuals working 45-52 hours per week had higher risk of total external cause mortality compared to those working 35-44 hours per week [HR 2.79, 95% confidence interval (CI) 1.22-6.40], adjusting for sex, age, household income, education, occupation, and depressive symptoms. Among the external causes of death, suicide risk was higher (HR 3.89, 95% CI 1.06-14.29) for working 45-52 hours per week compared to working 35-44 hours per week. Working >52 hours per week also showed increased risk for suicide (HR 3.74, 95% CI 1.03-13.64). No statistically significant associations were found for accident mortality.
Conclusions Long working hours are associated with higher suicide mortality rates in Korea.
- URI
- https://www.sjweh.fi/show_abstract.php?abstract_id=3890https://repository.hanyang.ac.kr/handle/20.500.11754/161213
- ISSN
- 0355-3140; 1795-990X
- DOI
- 10.5271/sjweh.3890
- Appears in Collections:
- COLLEGE OF MEDICINE[S](의과대학) > MEDICINE(의학과) > Articles
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