Do four-day work weeks improve productivity?

Topic summary

Do four-day work weeks improve productivity? — 7 sourced claims. The 2025 Nature Human Behaviour study concluded that productivity was maintained in reduced-hour trials by re… · A 2025 study published in Nature Human Behaviour tracked 2,896 workers across 141 organizations in the U.S.,… · A 2024 study led by Prof.

Key research questions

• Research this topic from public information: Do four-day work weeks improve productivity?.

Important claims and supporting citations

• The 2025 Nature Human Behaviour study concluded that productivity was maintained in reduced-hour trials by reducing meeting bloat rather than increasing work pace.

• A 2025 study published in Nature Human Behaviour tracked 2,896 workers across 141 organizations in the U.S., U.K., Canada, Ireland, Australia, and New Zealand.

• A 2024 study led by Prof. Julia Backmann at the University of Münster tracked 45 German organizations to measure stress via hair cortisol and smartwatches.

• Participants in the University of Münster 2024 study recorded 89 fewer stress minutes per week.

• Sociologists Wen Fan and Juliet Schor found that reduced-hour workweeks increased individual work ability and decreased sleep problems.

• Reduced-hours workweek models (32 hours at 100% pay) generally show preserved or improved productivity in multi-country trials.

• Compressed-hours workweek models (e.g., four 10-hour days) often result in cognitive fatigue and neutral or negative productivity outcomes over time.

Outstanding questions

• The 2025 Nature Human Behaviour study concluded that productivity was maintained in reduced-hour trials by reducing meeting bloat rather than increasing work pace.
• A 2025 study published in Nature Human Behaviour tracked 2,896 workers across 141 organizations in the U.S., U.K., Canada, Ireland, Australia, and New Zealand.
• A 2024 study led by Prof. Julia Backmann at the University of Münster tracked 45 German organizations to measure stress via hair cortisol and smartwatches.
• Participants in the University of Münster 2024 study recorded 89 fewer stress minutes per week.
• Sociologists Wen Fan and Juliet Schor found that reduced-hour workweeks increased individual work ability and decreased sleep problems.
• Reduced-hours workweek models (32 hours at 100% pay) generally show preserved or improved productivity in multi-country trials.
• Compressed-hours workweek models (e.g., four 10-hour days) often result in cognitive fatigue and neutral or negative productivity outcomes over time.