Worktime control-dependent reductions in fatigue, sleep problems, and depression.

Area of Science:

• Occupational Health
• Psychology
• Sociology

Background:

• Worktime control is a key factor influencing employee well-being.
• Previous research suggests a link between work autonomy and health, but specific associations with fatigue, sleep, and depression require further investigation.
• Both daytime and shift workers may experience varying levels of worktime control and associated health impacts.

Purpose of the Study:

• To examine the relationship between worktime control (daily hours and days off) and health outcomes including fatigue, sleep problems, and depressive symptoms.
• To differentiate the impact of control over daily working hours versus control over days off on worker health.
• To explore potential moderating effects of work schedule and gender on these associations.

Main Methods:

• A cross-sectional study involving 3681 daytime workers and 599 shift workers.
• Data collected via questionnaires assessing worktime control, fatigue, insomnia symptoms, daytime sleepiness, and depressive symptoms.
• Statistical analysis using analysis of covariance (ANCOVA) with adjustments for age, employment status, and other covariates.

Main Results:

• Increased worktime control was associated with significant reductions in incomplete recovery, insomnia symptoms, daytime sleepiness, and depressive symptoms across all workers.
• Control over days off showed a more pronounced association with improved health outcomes compared to control over daily working hours.
• A notable exception was the lack of association between control over daily working hours and insomnia symptoms in women.

Conclusions:

• Enhanced worktime control, particularly over days off, is associated with favorable health outcomes, including reduced fatigue, sleep disturbances, and depressive symptoms.
• The findings underscore the importance of implementing policies that increase employee autonomy over their work schedules to promote occupational health.
• Further research could explore the causal mechanisms and long-term effects of worktime control on worker well-being.