TL;DR: The four-day workweek is spreading beyond tech into manufacturing, healthcare, and retail as employers test reduced hours with full pay to boost retention and productivity. Pilots in the UK, Germany, and Japan now show that most companies keep the policy after the trial ends, though service and shift-based sectors need creative scheduling to make it work.
From Pilot Programs to Permanent Policy
The modern four-day week movement began with small software firms, but 2024 and 2025 marked a turning point. The UK’s largest pilot, coordinated by 4 Day Week Global and the think tank Autonomy, reported that 89% of participating companies continued the policy a year later. In Germany, more than 50 firms launched a six-month trial in 2024, including steel manufacturer ZEISS and consulting group Intraprenör. Japan’s government backed a “work-style reform” initiative that now lists over 100 companies offering four-day options. Perhaps most tellingly, South Korea’s Gyeonggi Province announced a public-sector trial covering thousands of workers, signaling state-level buy-in.
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The Specs: How the Models Differ
Not every four-day week looks alike. The most common model is 100-80-100: 100% pay, 80% time, 100% output. Tech and office roles typically achieve this by cutting meetings, enforcing focus blocks, and automating reporting. Shift-based industries use rotation models, where teams stagger days off so coverage remains seven days a week. Hospitals in Portugal and Belgium have tested four-day schedules for nursing staff with compressed 10-hour shifts, while some manufacturers run four 12-hour shifts followed by three days off. Crucially, most successful programs protect pay and benefits, which distinguishes them from older “part-time” arrangements.
Industry Impact and Challenges
Results are surprisingly consistent. Participants report lower burnout, fewer sick days, and reduced turnover. A Cambridge University study found that revenue stayed flat or rose at most firms, while resignations dropped 57%. The biggest hurdles remain in customer-facing roles: retail, hospitality, and emergency services cannot simply close. Solutions include staggered rotas, hiring additional part-time staff, and using AI for scheduling. Critics note that small businesses with thin margins struggle to absorb extra headcount, and some economists warn that productivity gains may fade once novelty wears off. Still, the direction of travel is clear: what began as a perk is becoming a recruiting standard.
FAQ
Q: Does a four-day workweek mean fewer hours or longer days?
A: Both models exist. Many office-based companies cut one day while keeping eight-hour shifts, totaling 32 hours. Shift-based employers often compress the same 40 hours into four 10-hour or 12-hour days, so workers still hit full-time thresholds for benefits.
Q: Is the four-day week legal in most countries?
A: Yes, in most cases. Labor laws typically set maximum weekly hours, not minimums, so employers can offer shorter schedules without violating regulations. Some countries, like Belgium, have passed laws giving workers the right to request a four-day week, while others rely on voluntary company policies.
Q: Which industries are adopting it fastest?
A: Technology, professional services, and marketing lead in adoption. Healthcare, manufacturing, and retail are catching up through rotation and compressed-shift models. Government agencies are also emerging as early adopters, which lends credibility and pushes the private sector to follow.
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