Abstract
This study compared the association between working hours and self-rated health (SRH) according to sex, socioeconomic status, and working conditions. In all, 25,144 participants were selected from the Korea National Health and Nutrition Examination Survey (KNHANES), conducted from 2010 to 2018. The risks of poor SRH, according to working hours, were investigated using multiple logistic regression. Both short and long working hours were associated with poor SRH. Men working short hours and women working long hours were at risk of poor SRH. Workers with fewer than nine years of education were at risk of poor SRH when working short hours, whereas workers with more than nine years of education were at risk when working long hours. Similarly, simple laborers were at risk of poor SRH when working short hours, while managers and professional workers were at risk when working long hours. When working for short hours, paid employees were at risk of poor SRH. Workers with a non-fixed work schedule showed no risk of poor SRH when working long or short hours. In conclusion, workers working short hours with low education and workers working long hours with high education were at risk of poor SRH. Working conditions were significantly related to the association between SRH and working hours.
Highlights
The 2018 report by the Organization for Economic Cooperation and Development (OECD)indicated that the Republic of Korea had the third-longest number of working hours (1933 h per year) among countries in the OECD, following Mexico (2148 h) and Costa Rica (2121 h) [1]
Two of these studies revealed that long working hours [16,17] and short working hours [17] were associated with poor Self-rated health (SRH), more commonly among women
Long and short working hours were associated with poor SRH
Summary
The 2018 report by the Organization for Economic Cooperation and Development (OECD)indicated that the Republic of Korea (hereinafter Korea) had the third-longest number of working hours (1933 h per year) among countries in the OECD, following Mexico (2148 h) and Costa Rica (2121 h) [1]. The associations between long working hours and several chronic diseases such as coronary heart disease [3,8], stroke [9], metabolic syndrome [10], and injury [11] were reported. Several studies investigated the associations between working hours and SRH. Two of these studies revealed that long working hours [16,17] and short working hours [17] were associated with poor SRH, more commonly among women. Such an association was reported in young workers [18]. Most of the studies investigated the trends of SRH with the stratification of only sex [16,18,19]
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