A University of Minnesota study finds that a flexible work schedule improves employee wellness, including sleep quality.

The study looked at 659 employees in a corporate workplace to see if implementation of a flexible work schedule predicts corresponding changes in health-related outcomes. Among the findings, the researchers found that increasing employees’ control over their work schedules and reducing their work-family conflicts resulted in almost an extra hour of sleep on work nights.

The findings appear in the Journal of Health and Social Behavior.