Age Differences in the Effects of Depression and Health Status on Work Productivity Among Korean Workers

OBJECTIVE: This study examined how depression and self-reported health status are associated with work productivity among Korean workers aged 20-40 years and whether these relationships differ by age group. METHODS: A total of 1,000 employees participated in a cross-sectional survey assessing absenteeism, presenteeism, and overall work impairment. Depression was measured with the PHQ-9, and health status was evaluated across physical, mental, social, and spiritual domains. Analyses were conducted separately for workers younger than 35 years and those aged 35 years or older using logistic regression. RESULTS: Depression was the most consistent predictor of productivity loss across all outcomes. The influence of specific health domains differed by age. CONCLUSION: These findings support the need for workplace programs that combine universal depression management with age-appropriate wellness strategies.