Reciprocal relations between work stress and insomnia symptoms: A prospective study

Area of Science:

• Occupational Health
• Sleep Medicine
• Psychology

Background:

• Cross-sectional studies suggest a link between work stress and poor sleep.
• Prospective evidence on the bidirectional relationship between work stressors and insomnia dimensions is limited.
• Understanding this relationship is crucial for developing effective workplace interventions.

Purpose of the Study:

• To prospectively analyze the relationship between perceived stress, work stressors, and key insomnia dimensions over time.
• To investigate the directionality of effects between stress and sleep using structural equation modeling.
• To identify specific insomnia symptoms and work stressors involved in a potential vicious circle.

Main Methods:

• Utilized biennial measurements from a large Swedish working population sample.
• Employed structural equation modeling to assess reciprocal relationships.
• Examined perceived stress, work demands, decision authority, and workplace social support in relation to insomnia symptoms.

Main Results:

• Found reciprocal relationships between insomnia and all four stress measures (perceived stress, work demands, decision authority, social support).
• Work stressors and perceived stress predicted difficulties initiating and maintaining sleep.
• Difficulties maintaining sleep predicted increased work demands and perceived stress; non-restorative sleep predicted all stress measures.

Conclusions:

• The study confirms a bidirectional, vicious circle between insomnia and perceived stress/work stressors.
• Specific insomnia dimensions have differential predictive effects on stress measures.
• The workplace represents a key setting for interventions aimed at mitigating insomnia and work-related stress.