Evening Chronotypes Linked to Higher Disability Risk

Adults who naturally prefer staying up late may face a greater likelihood of early retirement due to health issues.

Updated on Sept. 29, 2026 in Sleep Disorders

Flat opaque gouache-painted illustration of two bedside lamps casting a soft, warm light against a dark background, representing natural sleep cycle preferences. — A new 12-year observational study suggests that adults with evening chronotypes, or night owls, face a significantly higher risk of qualifying for disability pensions. AI Illustration. Upload story photo >

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Do you believe your natural sleep schedule significantly impacts your long-term career and financial success?

A new observational study of 5,679 mid-life adults found that individuals with evening chronotypes, often called night owls, had a 1.7 times higher risk of receiving a disability pension compared to morning types. The findings were observed over a 12-year follow-up period.

Why it matters

Researchers attribute this increased risk to potentially poorer overall health outcomes among evening-type individuals. Understanding these patterns may help identify those who require proactive support to maintain long-term work ability.

In an observational study published in Occupational & Environmental Medicine, researchers tracked 5,679 Finnish adults in their mid-40s over 12 years to compare disability pension outcomes between 634 evening-types and 2,537 morning-types.

The players

Occupational & Environmental Medicine

A medical journal that publishes research on the effects of the workplace and environment on human health.

Imperial College London

A public research university known for its work in science, engineering, medicine, and business.

The details

Participants were classified based on their body chronotype, which dictates their natural internal clock for sleep and wake cycles. The study observed that 5.2% of male E-types and 8.1% of female E-types were eventually granted a disability pension. While evening preference is associated with potential health challenges, other research from Imperial College London has shown that night owls may score 7.5% to 13.5% higher on cognitive tests than their morning-type counterparts.

The disability pension data was tracked over a 12-year follow-up period.

Health Landscape

This study builds upon the ongoing study of sleep chronotypes and health outcomes, which seeks to understand how biological preferences influence physical and mental performance. It adds a critical socioeconomic dimension by demonstrating how these internal clocks correlate with long-term work capacity.

If you notice that your natural sleep rhythm frequently conflicts with your daily schedule, it is worth discussing strategies for better rest with your doctor. Focusing on sleep hygiene may help mitigate long-term health risks associated with chronic misalignment between your clock and your routine.

The takeaway

While evening types may show cognitive advantages, this research underscores a significant health disparity regarding long-term work ability. Tracking your sleep patterns and addressing chronic fatigue with your primary care provider is a proactive step toward supporting your long-term health.