Could You Get Five Days of Work Done in Four?

Disclaimer: This blog post is provided for general informational purposes only. The content is based on opinions, research, and personal perspectives at the time of writing and should not be considered professional advice. Readers should use their own judgment before relying on any information provided. Individual results and experiences may vary.

For most of the last century, the five-day workweek has been treated as a fact of life, not a choice anyone actually made. But that assumption is being tested at a scale nobody expected. Over the past few years, tens of thousands of employees across dozens of countries have tried working four days instead of five, for the same pay, and researchers have been watching closely to see what happens to their output, their health, and their employers’ bottom lines. The short answer, according to the data now available, is that a lot of people really can compress five days of work into four – but not by accident, and not in every job.

The idea sounds almost too convenient: cut a full day of work and lose nothing. So it is worth asking what “getting the same work done” actually means in practice, what the largest pilot programs have measured, and where the concept still runs into real limits.

It also helps to be precise about what’s actually being tested. Most of the credible programs aren’t asking employees to cram 40 hours of work into 32 hours of time – they’re asking whether output, measured by revenue, deliverables, or service quality, can hold steady when the total hours worked go down. That distinction matters, because a four-day week built on genuinely shorter hours behaves very differently from a “compressed” schedule that just squeezes the same 40 hours into four longer days. The results below are overwhelmingly about the first kind.

The Largest Study Yet

The most rigorous test of the four-day week to date tracked 2,896 employees across 141 companies in six countries – Australia, Canada, Ireland, New Zealand, the United Kingdom, and the United States – over a six-month period, comparing them against a control group that kept working five days.^[1] Workers moved to a 32-hour week with no cut in pay, under what researchers call the 100:80:100 model: 100% of the pay, 80% of the time, in exchange for maintaining 100% of the output.^[1] By the end of the study period, burnout had measurably declined, stress levels had fallen, and job satisfaction was up.^[1] Crucially for employers, roughly 90% of the participating companies chose to keep the shorter week once the program ended.^[1]

That result echoes what an earlier, equally closely watched program in the UK found. Nearly 3,000 employees across 61 companies moved to a four-day week for six months, and by the end, well over 90% of those companies said they would keep it going, with several reporting meaningful gains in revenue along the way.^[2]

What the Numbers Actually Show

The clearest single dataset on this question comes from 4 Day Week Global, the nonprofit that has coordinated pilot programs with independent academic researchers since 2022. Its full results from the UK pilot programme, drawn from dozens of participating businesses, are summarized below.

Those figures line up with separate reporting on the same program: company revenue held steady or grew compared with the same period a year earlier, and the large majority of employees said they had no interest in going back to a five-day schedule.^[2] A year on, the results held up. Of the 61 companies involved, 54 were still running a four-day week, and just over half had made it permanent.^[4]

Iceland Got There First

Long before the UK programs made headlines, Iceland ran what was, at the time, the largest experiment of its kind. Between 2015 and 2019, roughly 2,500 public-sector workers – about 1% of the country’s working population – moved from a 40-hour week to 35 or 36 hours with no reduction in pay.^[5] Worker wellbeing improved across stress, burnout, and work-life balance, and the shift proved durable: today, the large majority of Iceland’s workforce has secured the right to a shorter week through union agreements that followed the program.^[5]

Corporate experiments have told a similar story. When Microsoft Japan closed its offices every Friday for a month in 2019, it reported a roughly 40% jump in productivity and a 23% drop in electricity costs, along with nearly 60% less printing.^[5] None of these numbers prove the four-day week works everywhere – they mostly involve office-based, white-collar teams – but the pattern across very different countries and industries is hard to dismiss as a fluke.

Beyond the UK: A Global Pattern

What makes the four-day week harder to dismiss is how widely it has spread beyond the programs that first tested it. In the UK, an estimated 2.7 million workers – about 11% of the entire workforce – now work a four-day week, whether or not their employer ever formally took part in a pilot.^[6] Trade unions in other countries are pushing in the same direction: Mexican unions marched for a shorter workweek on International Workers’ Day, and Ireland’s Congress of Trade Unions has formally debated adopting a four-day policy.^[6] None of this proves the model is universal, but it does show the four-day week has moved well past a handful of headline-grabbing tech startups.

Real Companies, Real Numbers

Behind the aggregate statistics are individual companies whose experience helps explain why the results tend to repeat. Tyler Grange, a UK-based environmental consultancy that took part in the original 2022 program and later made the policy permanent, reported a 22% increase in productivity, an 88% jump in job applications, and a 66% drop in absenteeism after the switch.^[2] Across that same UK program, 90% of employees said they definitely wanted to keep working a four-day week once it ended – a level of enthusiasm that helps explain why so few companies walked the policy back.^[2]

In the United States, Exos – a coaching company with more than 3,000 employees that works with roughly a quarter of the Fortune 100 – piloted a four-day week starting in 2023 and saw its turnover rate fall from 47% in 2022 to 29% the following year.^[7] The company didn’t just delete a workday; it capped most meetings at 25 minutes, encouraged short recovery breaks between tasks, and restructured the calendar so that Tuesdays and Thursdays were reserved for meetings while Mondays and Wednesdays were kept clear for focused, individual work.^[7] That kind of deliberate redesign – not just a shorter calendar – shows up again and again in the companies that make the model stick.

Does It Work Outside an Office?

Most of the data on this topic comes from white-collar, knowledge-based work, which raises a fair question: does any of this apply to people who build things, staff a counter, or can’t simply push a deadline back a day? One of the more telling counterexamples is Advanced RV, a 50-person recreational-vehicle manufacturer in Ohio. Its owner expected roughly even odds of success when the company moved to a four-day week, and some staff were openly skeptical at first.^[8] Rather than simply working faster, teams on the shop floor found ways to reorganize tasks and cut wasted motion so the same output fit into four days – the same underlying principle behind the office-based programs, applied to physical work.^[8] It’s a useful reminder that the model isn’t inherently limited to desk jobs, even though the logistics of applying it to shift work, customer-facing roles, or 24/7 operations are genuinely harder than turning off email on a Friday.

Why Less Time Doesn’t Always Mean Less Output

It seems counterintuitive that cutting a full workday wouldn’t reduce how much gets done. Researchers studying the psychology of the shorter week point to two overlapping mechanisms: recovery and motivation. Better-rested, less-depleted employees tend to concentrate more effectively during the hours they do work, and the extra day off tends to raise motivation and engagement rather than simply subtracting labor time.^[9] In practice, most companies that pull this off don’t just delete a day and hope for the best – they cut low-value meetings, tighten processes, and start measuring people by what they produce instead of how long they sit at a desk.^[10] Sociologist Juliet Schor, who has led several of these programs, argues that the accountability of a shared deadline is part of what makes it work: when the whole team is counting on Friday actually being off, people are more willing to find and cut the waste in their own schedules.^[10]

None of this happens automatically. Across roughly 8,700 workers who have gone through four-day programs over the past five years, the gains in wellbeing and profit have consistently traced back to genuine work redesign, not simply a shorter calendar.^[10]

Where Skepticism Is Fair

The evidence is genuinely encouraging, but it isn’t unconditional. Adoption in the United States is still modest: about 22% of US employers now offer some form of four-day option, up from 14% in 2022, which means most companies still haven’t tested it.^[11] Researchers who study flexible work arrangements caution that some of these programs may be experiencing a “honeymoon effect,” where enthusiasm is highest early on and could fade as the novelty wears off.^[11] There’s also an important distinction between a genuine work-time reduction and a compressed schedule that just squeezes the same 40 hours into four longer days – the latter can raise fatigue rather than lower it, and is a very different proposal from what most of the successful programs actually tested.^[11] And the model has mostly been proven in knowledge work; frontline, shift-based, and highly time-sensitive jobs face real scheduling constraints that an office team simply doesn’t, even if Advanced RV shows those constraints aren’t automatically disqualifying.

It’s also worth noting how uneven adoption still is. Even with years of positive headlines, most companies worldwide haven’t made the switch, and the ones that have skew toward mid-sized, tech-adjacent, or professional-services organizations with more control over how their work gets scheduled. A hospital ward, an airline, or a retail chain with fixed customer-facing hours has to solve a much harder staffing puzzle than a marketing agency does. The honest summary of the evidence isn’t “this always works” – it’s “this works often enough, in enough different settings, that dismissing it outright is no longer a serious position, but it still takes real planning to pull off.”

Watch: The four-day week isn’t realistic | The Meeting Room

The discussion explores why a four-day workweek may not suit every workplace, highlighting the challenges of balancing flexibility, productivity, team dynamics and work-life balance.

What It Would Take to Make It Work for You

If a four-day week is something you or your team wants to test, the evidence suggests a few consistent starting points. First, treat it as a redesign project, not a scheduling change – audit meetings, approval chains, and recurring tasks before touching the calendar. Second, set clear, measurable goals for the program period so success isn’t just a feeling but something you can point to, the way the companies above tracked revenue, attrition, and burnout. Third, expect an adjustment period; most of the reported gains built up over months, not days. And finally, be honest about which roles genuinely lend themselves to output-based measurement versus roles tied to fixed coverage or customer-facing hours, since those may need a different version of the model, such as staggered days off rather than one universal day.

The evidence doesn’t say every company can get five days of work done in four. It says a striking number of the ones who tested it, carefully, actually did – and that the people doing the work came out of it healthier for the effort.

A Simpler Way to Stay On Track

If you’re serious about staying consistent, the tools you use matter. Instead of juggling scattered notes and overwhelming task lists, try a system designed to help you stay organized and keep moving forward. That’s where Ezytask comes in. It’s a to-do list built with a focus on completion, not just organization – helping you manage procrastination and maintain momentum.

If you want a simpler approach to productivity, check out Ezytask and see how a more streamlined system can support your workflow.

References

1. “The 4-Day Work Week in 2026: What the Research Actually Shows.” SUCCESS. success.com
2. “World’s biggest 4-day workweek experiment shows big health benefits.” CNBC. cnbc.com
3. “The 4 Day Week UK Pilot Programme Results.” 4 Day Week Global. 4dayweek.com
4. “These companies tried a 4-day workweek. More than a year in, they still love it.” NPR. npr.org
5. “New study shows 4-day working week to be a success.” World Economic Forum. weforum.org
6. “Could a four-day work week reshape the labour market?” World Economic Forum. weforum.org
7. “This U.S. company tested a 4-day workweek – and says it made workers happier and more productive.” CNBC. cnbc.com
8. “A manufacturer tested the 4-day workweek for 5 days’ pay and won’t go back.” NPR. npr.org
9. Rae, C. L., & Russell, E. “How can a 4-day working week increase wellbeing at no cost to performance?” Trends in Cognitive Sciences (ScienceDirect, open access). sciencedirect.com
10. “The real reason a 4-day workweek makes people happier in their jobs.” CNBC. cnbc.com
11. “The rise of the 4-day workweek.” American Psychological Association, Monitor on Psychology. apa.org