Association between Long Working Hours and Suicidal Ideation

Ki Ung Kim; Shin Goo Park; Hwan Cheol Kim; Jong Han Lim; Sung June Lee; Sung Hwan Jeon; Yong Suk Huh

doi:10.35371/kjoem.2012.24.4.339

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Original Article Association between Long Working Hours and Suicidal Ideation: Ki Ung Kim, Shin Goo Park, Hwan Cheol Kim, Jong Han Lim, Sung June Lee, Sung Hwan Jeon, Yong Suk Huh; DOI: https://doi.org/10.35371/kjoem.2012.24.4.339
Published online: December 31, 2012

Department of Occupational and Environmental Medicine, Inha University Hospital, Korea. stressdr@naver.com

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Abstract

OBJECTIVES
This study was conducted to investigate the relationship between long working hours and suicidal ideation.
METHODS
Data based on the fourth Korea National Health and Nutrition Health and Nutrition Examination Survey_(2007~2009) pertaining to a total of 4,539 full-time workers were analyzed. Working hours were divided into four groups (<40 hours/week, 40~51 hours/week, 52~60 hours/week, >60 hours/week). The relationship between working hours and suicidal ideation was then analyzed after adjusting for general and occupational characteristics using a multivariate logistic regression model.
RESULTS
Working 40-51 hours/week showed the lowest suicidal ideation(9.5%), whereas working 52~59 hours/week, over 60 hours/week and less than 40 hours/week showed suicidal ideations of 14.8%, 15.7% and 17.2% respectively. Even after adjusting for general and occupational characteristics, employees working 40~51 hours/week had the lowest suicidal ideation. Working 52~59 hour/week, over 60 hours/week and less than 40 hours/week showed an odds ratios of 1.413(p-value: 0.058), 1.380(p-value: 0.020) and 1.164(p-value: 0.358) respectively.
CONCLUSIONS
The results suggest that working long hours, especially over 60 hours per week, is related to suicidal ideation.

Keywords: Work hour;Suicidal ideation;Suicide

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