A new international study has uncovered a significant link between extended working hours and increased obesity rates, with researchers advocating for a more balanced lifestyle to promote better health. The findings were presented at the European Congress on Obesity (ECO 2026) and analyzed working patterns and obesity prevalence across 33 OECD member countries from 1990 to 2022.
Key Findings on Work Hours and Obesity
The research revealed that nations with longer average annual working hours, including the United States, Mexico, and Colombia, also exhibited higher obesity rates. Conversely, countries with shorter working hours tended to have lower obesity prevalence. The study estimated that reducing annual working hours by just 1 percent correlates with a 0.16 percent decrease in obesity rates. This reduction is thought to allow more time for physical activity and reduce stress-related eating behaviors.
Additional Contributing Factors
The study acknowledged that other variables influence obesity rates. Higher income levels and increased urbanization were associated with lower obesity rates, possibly due to better access to healthy food and recreational facilities. However, the researchers emphasized that the findings demonstrate association rather than direct causation, and further studies are needed to establish a definitive causal relationship.
Obesity Rates Across OECD Countries
As of 2022, the United States had the highest adult obesity rate among the 30 OECD nations studied, at 41.99 percent. Japan reported the lowest rate at 5.54 percent, while the United Kingdom's obesity rate stood at 26.8 percent. These figures highlight significant disparities in obesity prevalence across developed nations.
The study's lead author stressed the importance of considering work-life balance in public health policies. "Our findings suggest that reducing working hours could be a viable strategy to combat obesity, but it must be combined with other interventions," they said. The research adds to a growing body of evidence linking occupational factors to metabolic health.
