Saf Health Work.  2022 Mar;13(1):17-22. 10.1016/

Impact of Long Working Hours and Shift Work on Unmet Health Care Need Among Korean Workers

  • 1Department of Social and Preventive Medicine, Hallym University College of Medicine, Chuncheon, Republic of Korea
  • 2Korea Institute of Labor Safety and Health, Seoul, Republic of Korea
  • 3Department of Occupational and Environmental Medicine, Dankook University College of Medicine, Cheonan, Republic of Korea


This study aimed to identify work-related risk factors, including long working hours and night/shift work, for unmet health care need using data of a representative panel of Korean adults.
Associations between work-related factors and unmet health care need were analyzed using data of 3,440 participants (10,320 observations) from the 2011-2013 Korean Health Panel Study. A generalized estimating equation was used for the analysis of repeated measures.
The prevalence of unmet health care was 16.6%. After adjusting sex, age, socioeconomic status, work characteristics, and working more than 60 hours per week (odds ratio [OR]: 1.43, 95% confidence interval [CI]: 1.23–1.65) or 50–59 hours per week (OR: 1.26, 95% CI: 1.08–1.46) instead of 40–49 hours per week and night/shift work (OR: 1.27, 95% CI: 1.06–1.51) were associated with unmet health care need.
Long working hours and night/shift work are risk factors for unmet health care need among the Korean working population.


Korea health panel; Long working hours; Night work; Shift work; Unmet health care need
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