<p>The four-day work week has moved from experiment to mainstream policy consideration. Two years of data from over 200 companies across Europe, Australia, and North America that adopted 32-hour schedules provides enough evidence for a genuine assessment — one that is more nuanced than either advocates or skeptics predicted.</p>
<h2>What the Data Shows</h2>
<p>In knowledge work — software development, marketing, finance, legal, and consulting — productivity measured by output (projects delivered, revenue generated, client satisfaction scores) held steady or improved in 78% of companies that switched. Productivity improvements are concentrated in areas where meeting time was reduced: the four-day week forced scheduling discipline that eliminated low-value recurring meetings.</p>
<p>Employee retention improved significantly: turnover in four-day week companies fell by an average of 35% compared to pre-switch baselines and industry peers. Sick leave decreased by 20%. The majority of companies that tried it have kept it.</p>
<h2>Where It Doesn't Work</h2>
<p>Customer-facing roles, manufacturing, and healthcare show much more complex results. A four-day schedule in a 5-day customer environment means either reduced service availability (customer impact) or rotating schedules that increase operational complexity. Manufacturing faces similar constraints: equipment utilization and production targets don't compress into fewer days without either longer shifts or lower output.</p>
<h2>Policy Momentum</h2>
<p>Germany and Belgium have introduced legislation making 32-hour weeks the default for knowledge work sectors with opt-out provisions. The UK's pilot program, which covered 70 companies and 3,300 employees, has been cited approvingly by the Labour government. The four-day week is transitioning from progressive employer perk to a standard employment policy debate in Western Europe.</p>