The Four-Day Workweek: What the World's Largest Trials Actually Found
Backed by empirical findings from trials across hundreds of companies and thousands of workers, here is what the data actually reveals about burnout, revenue, and the reality of a 32-hour week.

For nearly a century, the 40-hour, five-day workweek has been accepted as an immutable law of economic life. Standardized in 1926 when Henry Ford dropped his factories from six days to five, the model was designed for manufacturing assembly lines, not modern knowledge and service economies.
In recent years, the concept of a four-day workweek has transitioned from a radical progressive proposal into a rigorous corporate experiment. Over the past three years, the world's largest coordinated trials—involving hundreds of businesses and thousands of employees across the UK, the United States, Ireland, and South Africa—have yielded concrete data.
Does dropping a working day destroy productivity, or does it unlock a healthier, more profitable model of work? Here is what the empirical research shows.


