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Study Finds Four-Day Work Week Increases Productivity and Re

July 6, 2025 | by Ethan Rhodes

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Study Finds Four-Day Work Week Increases Productivity and Reduces Burnout










Why the Four-Day Work Week Wins on Productivity & Well-Being

Study Confirms It: The Four-Day Work Week Turbo-Charges Productivity and Slashes Burnout

What the newest data means for you, your team, and the way you design your calendar.

Hey there — Ethan Rhodes here. I’ve spent the past decade sitting in on leadership stand-ups, untangling spaghetti calendars and running productivity experiments with everyone from scrappy start-ups to Fortune-500 divisional teams. Few ideas have created as much buzz — and as much real, measurable impact — as the shift to a four-day work week.

The latest wave of research just dropped and the numbers are hard to ignore. In the 2024 follow-up of the world’s largest four-day work-week trial (61 companies, nearly 3,000 employees across North America and Europe), organizations reported:

  • Average productivity scores jumping 22% after six months.
  • Employee burnout down 51% — with stress, fatigue and work-family conflict all trending sharply lower.
  • Revenue up 15% and absenteeism down a third, even with 20% fewer scheduled hours.
  • 92% of participating companies have now made the shorter week permanent.

But statistics only matter if they lead to action. So let’s break down what actually makes a compressed week successful and how you can start capturing the upside — even if your organization isn’t ready to flip the switch overnight.

Why Less Time Creates More Output

At first glance, shaving a full day off the schedule feels like productivity heresy. Yet the data keeps telling the same story: time pressure forces focus. With a clear, non-negotiable deadline (hello, three-day weekend) teams naturally prune wasteful meetings, tighten decision loops and protect deep-work blocks.

In the UK cohort of the trial, managers rated overall productivity a 7.7 out of 10 — up from 6.5 pre-trial. Crucially, researchers found zero evidence of unhealthy “speed-up.” Workloads stayed stable; the busywork didn’t. When Friday disappears, two-hour status meetings suddenly become 20-minute huddles or well-written async updates.

The Burnout Equation

Burnout has three ingredients: exhaustion, cynicism and reduced efficacy. The four-day model attacks all three:

  1. More recovery. A 72-hour weekend gives the nervous system an extra full sleep cycle to reset. Employees in the trial logged an average of 7.7 hours of sleep on Sunday nights, up from 6.8.
  2. Greater autonomy. Schedule control scores climbed 5% across the board. When people feel they own their time, cynicism plummets.
  3. Sense of mastery. Teams reported a 9% bump in self-rated work ability (how close they’re operating to their “personal best”). Achievement is a potent burnout antidote.

Bottom line: the extra day off isn’t just leisure; it’s strategic recovery that compounds into sharper Monday output.

Five Moves to Steal from Four-Day Pioneers

1. Run a Focus Sprint Pilot

Pick any non-customer-facing department and declare the next four Fridays as “heads-down, no-meeting” days. Measure key metrics (tickets closed, sales proposals shipped, error rates) before and after. You’ll build local proof fast.

2. Adopt the 15-Minute Meeting Default

Microsoft Japan’s famed 2019 trial cut meetings in half and saw a 40% productivity spike. Set 15 minutes as the new default in your calendar tool. Longer slots require a written agenda and explicit opt-in.

3. Embrace “Async Friday”

If leadership balks at a wholesale day off, make Friday meeting-free and async-first. No live calls unless something is on fire. The cultural shift toward written updates is itself a productivity gain.

4. Install a Personal Battery Gauge

Every Thursday afternoon, have team members rate their energy on a 1-10 scale (a quick Slack poll works). Anyone below a 6 lists one recovery action they’ll prioritize over the weekend. It keeps well-being on the radar and normalizes rest.

5. Make Success Measurable

Trials succeed because they’re data-driven. Define two or three simple KPIs per team (e.g., weekly MQLs, code deploys, customer NPS). When output climbs and burnout sinks, resistance melts away.

Pitfalls to Avoid

“Cramming Friday into Thursday.” The point is less work time, not redistributing the same hours. Guard against stealth overtime.

Ignoring customer expectations. Many four-day companies stagger schedules so someone is always on call. Publish clear service windows and watch churn stay flat.

Lack of executive modeling. If leaders keep booking Friday meetings, the experiment dies. Senior buy-in isn’t optional.

Your Next Step

The four-day week isn’t a Silicon-Valley novelty; it’s quickly becoming table stakes in the global talent market. Whether you pilot a “Focus Friday” or go all-in on a compressed schedule, the playbook is the same: cut noise, protect deep work, measure relentlessly, and double down on what works.

Still skeptical? Great. Try a four-week micro-experiment and let the numbers tell the story. If the results mirror the 2024 study — higher output, happier humans, healthier bottom line — you’ll have all the proof you need to champion a permanent shift.

See you on the (long) weekend.

Written by Ethan Rhodes — Workplace strategist & productivity coach helping modern professionals optimize their time and energy.


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