Work-life balance issues, particularly poor recovery from work and work spillover to personal life, have an important contributing role in poor mental health associated with the Evening chronotype.
Key Findings
Results
Evening-types had more work-life balance issues and symptoms of mental disorders compared to other circadian types.
Study used 2266 working participants from the population-based Healthy Finland Study (mean age = 44 years, 57% women)
Circadian type was assessed using the widely used single item from the Morningness/Eveningness Questionnaire (MEQi19)
Mental health was assessed with MHI-5, GAD-7, PHQ-9, a separate item for suicidal thoughts, and actualized healthcare visits
Associations with work-life balance problems and poor mental health remained even after adjustment for health behaviors including sleep insufficiency, insufficient physical activity, and risky alcohol consumption
Results
Evening-type was associated with health behaviors, but the associations with work-life balance problems and poor mental health persisted after controlling for these behaviors.
Generalized linear models were controlled for sex, age, sleep insufficiency, insufficient physical activity, and risky alcohol consumption
Health behaviors did not fully explain the relationship between evening chronotype and mental health problems
This suggests that work-life balance issues contribute independently to mental health problems in evening-types beyond health behavior confounders
Results
Work spillover to personal life and poor recovery from work had moderating roles in mental disorders, especially among moderate circadian types and definite Evening-types.
Work-life balance was measured by questions on work spillover to personal life and recovery from work
Moderation effects were particularly evident among moderate circadian types and definite Evening-types
The moderating role suggests that work-life balance issues amplify the association between evening chronotype and mental health problems
Results
Recovery from work partly mediated the association between Evening-type and anxiety disorders.
Mediation analysis identified poor recovery from work as a partial mediator specifically in the pathway between Evening-type and anxiety disorders
This was assessed using GAD-7 (General Anxiety Scale) as the anxiety outcome measure
The partial mediation indicates that poor work recovery explains some, but not all, of the elevated anxiety risk in evening-types
Methods
The study used a population-based design with multiple validated mental health measures to assess the relationship between chronotype and mental health outcomes.
Population-based Healthy Finland Study provided the sample of 2266 working participants
Mental health outcomes included psychological distress (MHI-5), anxiety (GAD-7), depression (PHQ-9), suicidal thoughts (single item), and actualized healthcare visits
Both moderating and mediating roles of work-life balance were examined, providing a nuanced understanding of the mechanisms involved
Cross-sectional population-based design was employed
What This Means
This research suggests that people who are 'evening types' — those who naturally prefer to stay up late and wake up later — are more likely to experience mental health problems such as anxiety and depression, and this connection is partly explained by difficulties balancing work and personal life. Using data from over 2,200 working adults in Finland, the researchers found that evening-types reported more problems with work spilling over into their personal lives and greater difficulty recovering mentally and physically from work compared to morning-types. These work-life balance problems appeared to worsen mental health outcomes, especially for moderate and definite evening-types.
Importantly, the study found that poor recovery from work partially explained why evening-types are more prone to anxiety disorders specifically. This means that some of the mental health burden experienced by evening-types may be linked to their difficulty 'switching off' from work, which could be partly due to social and work schedules that are misaligned with their natural body clock rhythms. Even after accounting for other unhealthy behaviors like poor sleep, lack of exercise, and alcohol use, evening chronotype remained associated with worse work-life balance and mental health outcomes.
This research suggests that addressing work-life balance — particularly ensuring adequate recovery time from work — could be an important strategy for reducing mental health problems among evening-type workers. Workplace policies that allow for more flexible scheduling aligned with individual chronotypes, as well as interventions targeting work recovery, may be particularly beneficial for this group. The findings highlight that the mental health challenges faced by evening-types are not simply a matter of personal habits but are also shaped by how well their work environments accommodate their biological rhythms.
Merikanto I, Partonen T, Vanttola P, Virtanen M. (2026). The role of recovery from work and work-life spillover in the association between chronotype and mental health problems: A population-based study.. Sleep health. https://doi.org/10.1016/j.sleh.2026.03.001