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Collecting Sleep, Circadian, Fatigue, and Performance Data in Complex Operational Environments
Published on: August 8, 2019
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Data profile: Korean Work, Sleep, and Health Study (KWSHS)
Seong-Sik Cho1, Jeehee Min2, Heejoo Ko3
1Department of Occupational and Environmental Medicine, Dong-A University College of Medicine, Busan, Korea.
Annals of Occupational and Environmental Medicine
|February 19, 2025
Summary
The Korean Work, Sleep, and Health Study (KWSHS) reveals how job conditions affect sleep and work performance. Findings show physical activity, emotional labor, and sleep issues impact worker productivity and mental health.
Area of Science:
- Occupational Health
- Sleep Science
- Labor Economics
Background:
- The Korean Work, Sleep, and Health Study (KWSHS) was established in 2022.
- It is a longitudinal panel study focusing on the Korean workforce.
Purpose of the Study:
- To examine the complex interactions between work conditions, sleep health, and labor market performance.
- To provide insights into how evolving work environments influence health and productivity.
Main Methods:
- Collected baseline data from 5,517 participants (aged 19-70) across diverse occupations.
- Utilized biannual follow-up surveys and integrated refreshment samples to maintain cohort stability (5,783 participants by wave 5).
- Gathered data on socio-demographics, employment, sleep patterns, health outcomes, and workplace performance.
Main Results:
- Identified adverse effects of occupational physical activity on productivity.
- Demonstrated the impact of emotional labor on health-related productivity loss.
- Highlighted the significant negative effects of sleep disruptions on mental health.
Conclusions:
- The KWSHS design facilitates detailed longitudinal and cross-sectional analyses.
- Findings offer crucial insights for developing evidence-based interventions.
- The study serves as a vital resource for improving occupational health and productivity in Korea.
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