The short version
- Severe sleep disturbances may shorten the post-50 career span by nearly nine months compared to those without such issues.
- Women with no sleep problems showed longer working lives than their male counterparts, while routine job holders faced the shortest expectancy.
- Researchers emphasize the need for workplace interventions and occupational health support, particularly for lower-income workers.
A recent analysis of Finnish workforce data indicates that chronic sleep problems can significantly curtail the length of a worker's career after age 50. The study, conducted by researchers at the University of Turku, found that individuals experiencing severe sleep disturbances could expect to work approximately nine months less than those who reported no such issues. This finding underscores a growing concern regarding how midlife health behaviors impact long-term economic participation and retirement planning.
The investigation utilized data from two major Finnish studies: the Finnish Public Sector study and the Health and Social Support study. Researchers examined sleeping habits of participants after they turned 50, categorizing nightly sleep duration into short (under seven hours), mid-range (seven to 8.5 hours), and long (nine hours or more). Sleep disturbances were defined by difficulties falling asleep, staying asleep, waking too early, or experiencing nonrestorative sleep during the four weeks prior to the survey.
The results revealed a clear correlation between sleep quality and working life expectancy. Participants with moderate sleep disturbances worked nearly five months less within the 50-to-68 age range compared to those without disturbances. Those with severe disturbances saw an even greater reduction, working eight fewer months on average. These reductions occurred regardless of gender or specific job type, suggesting a broad impact across different professional sectors.
Interestingly, the study found no significant difference in working life expectancy between those who slept short durations and those who slept within the recommended mid-range of seven to 8.5 hours. Both groups maintained an average working life expectancy of 13 years and two months after turning 50. However, long sleep duration—defined as nine hours or more—was associated with a shorter working life expectancy of 12 years and five months. This aligns with previous research linking excessive sleep to poorer health outcomes.
Gender and socioeconomic status played notable roles in the findings. Professional women with no sleep disturbances enjoyed the longest working life expectancy, nearing 14 years after age 50. In contrast, men in routine jobs who suffered from severe sleep disturbances had the shortest expectancy, at just over 12.5 years. This disparity highlights how existing inequalities may be exacerbated by health issues related to rest.
Dr. Saana Myllyntausta, the lead investigator from the University of Turku’s department of psychology and speech-language pathology, noted the surprise that short sleep did not differ significantly from optimal mid-range sleep in terms of career length. She emphasized that while short sleep has previously been linked to earlier retirement, long sleep appears to be a stronger predictor of reduced working life, potentially due to underlying health conditions.
The researchers acknowledged limitations in their study, noting they could not fully account for other influential factors such as physical and mental health status, underlying medical conditions, risky health behaviors, or specific working conditions like shift work. These variables could independently affect both sleep quality and career longevity, complicating the direct causal link between sleep disturbances and reduced working years.
Despite these limitations, the study advocates for targeted interventions to support sleep health, particularly among workers with lower socioeconomic status. Previous studies have shown that cognitive behavioral therapy for insomnia delivered through occupational health services, as well as workplace educational programs, can be effective in improving sleep among working-age adults. Such measures could help mitigate the economic impact of sleep disorders.
The findings come amid broader concerns about worker well-being, with previous estimates suggesting that one in three workers in the UK experience chronic lack of sleep. As populations age and retirement ages rise, maintaining workforce participation becomes increasingly important. Addressing sleep health may therefore offer a viable strategy for extending productive careers and reducing early exits from the labor market.
Moving forward, policymakers and employers are encouraged to consider sleep health as a critical component of occupational wellness programs. By integrating evidence-based interventions into workplace health services, organizations can potentially support employees in managing sleep disturbances. This approach may help narrow the gap in working life expectancy between different socioeconomic groups and promote more equitable career longevity.
Sources behind this briefing
Go to the original reporting
- The Guardian World↗Poor sleep can cost over-50s nine months of career, study finds
