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The Four-Day Work Week: Why It Works

By Matt Ellis · November 6, 2018
four-day-work-week primary img

Work-life balance has always been a struggle. But an increased concern for workers' rights paired with the power of automation has created a shift. Certain industries don't require as many working hours anymore, and the global trend—especially in Europe—leans toward a four-day work week.

Does it work? Can people accomplish the same amount in four days as they can in five? And if so, why isn't everyone doing it? Let's look at what we know so far to see how effective the four-day work week really is.

The Four-Day Work Week: An Idea Ahead of Its Time

The four-day work week has become a hot topic recently, as technology has introduced new ways to increase productivity. But the truth is, the idea has been on people's minds for a while now.

In 1930, during the Great Depression, respected economist John Maynard Keynes predicted that we'd all have a 15-hour work week "within a hundred years."

In his own time, Keynes saw the rise of industrialization and assumed the trend toward more efficient work methods would continue. Once a worker earned enough to pay for their necessities, he suggested, they'd opt to spend more time at home or in leisure, reducing the work week to only two or three days.

Industrial revolution city

As an attractive fantasy to beleaguered workers throughout the century, the idea never quite left the public consciousness. Even Richard Nixon, during his vice presidency in 1956, predicted that the four-day work week was coming "in the not too distant future."

The idea remained just an idea for close to a century, until 1998 when France enacted the first of its two "Aubry" laws that reduced the national work week to 35 hours instead of 39, with excess hours counting as overtime. (In subsequent years, revisions have eroded much of the original laws.) Their aim was to reduce their 12% unemployment rate (at the time) through work sharing, but the success of the legislation got other countries revisiting their standard work schedules.

With the tech disruption evident in the 21st century—similar to the "conveyor belt" tech disruption of the 1920s that ushered in the five-day work week—the idea continues to snowball. Even business mogul Richard Branson supports the shift to a shorter work week, stating in a blog post:

By working more efficiently, there is no reason why people can't work less hours and be equally—if not more—effective. People will need to be paid more for working less time, so they can afford more leisure time. That's going to be a difficult balancing act to get right, but it can be done.

Different countries in Europe are already experimenting and implementing shorter work weeks in varying degrees. But the conversation got louder earlier this year, when a New Zealand firm conducted a formal experiment.

New Zealand Study About the Four-Day Work Week

The Perpetual Guardian is an estate management firm that deals in wills, trusts, and EPAs—a fairly unassuming and conventional company, perfect for capturing a work experience close to the norm.

In March and April of 2018, the firm ran an experiment that reduced their work week from 40 hours to 32 hours, for all of its 240 employees, while still paying the same salaries. They hired a pair of researchers to record the results quantitatively, and what they found shows positive support for the four-day work week:

  • 24% more employees felt they could successfully balance their work and personal lives.

  • Stress decreased by 7% among everyone involved.

  • Overall work satisfaction increased by 5%.

But above all, "their actual job performance didn't change when doing it over four days instead of five," in the words of Jarrod Harr, the Auckland University of Technology human resources professor who jointly oversaw the experiment.

As reported, with the benefit of an extra free day, employees were exceptionally motivated to meet productivity requirements. This motivation inspired workers to devise better work habits and to waste less of their work time, to say nothing of the improvements in their mood. "Supervisors said staff were more creative, their attendance was better, they were on time, and they didn't leave early or take long breaks," noted Harr.

Helen Delaney, a senior lecturer at the University of Auckland Business School who also supervised the experiment, made a similar observation: "Employees designed a number of innovations and initiatives to work in a more productive and efficient manner, from automating manual processes to reducing or eliminating non-work-related internet usage."

The study seems to offer evidence for what many already predicted: Productivity isn't influenced by just time—employee mentality also plays an influential role.

The Four-Day Work Week Is Already Happening Today

Figurine standing on a map

With the U.S. working longer hours than most other countries, American work ethic seems to demand longer hours, while other parts of the world are demanding shorter. The four-day work week is already well underway in Europe, with more countries expressing interest as time goes on.

Here's a chart of the top ten countries with the shortest average work weeks, set against their average annual salary (PPP) for context. Both data sets are from 2017.


Average hours worked/week

Average annual salary (USD)































It's worth noting that six of the countries with the ten shortest work weeks are also among the top ten countries with the highest annual salaries (Switzerland, Netherlands, Denmark, Norway, Austria, and Belgium). Those European countries not yet on the list seem to be close behind. Although Britain's average work week consists of 40 hours, recently the Trades Union Congress (TUC) has been pushing for a four-day work week of 29 hours.

Even the U.S. has experimented with shorter work weeks, although more from individual companies and organizations than statewide legislation. Here are some notable examples:

  • Between 2008 and 2011, the Utah state government instituted a 4/10 work week: four ten-hour days with Fridays off.

  • Since 2016, Amazon has offered some employees an optional four-day work week of 30 hours, although at a reduced salary.

  • In 2004, Google initiated a policy where its employees were allowed to pursue whatever projects they wished for 20 percent of their time, or one full day. However, the practice is said to have been abolished informally, with cynics referring to it as the "120 percent" policy because they still use all of their work hours for job duties.

The Pros and Cons of a Four-Day Work Week

Close up of a clock

Factoring in data from the New Zealand study and others, lets see what benefits a four-day work week gives to companies—and at what cost.


  • Better productivity. Productivity during work hours increases to compensate for the lost day. Aside from the New Zealand study, we also have evidence from another study that overall productivity peaks at 25-30 hours per week for people over the age of 40.

  • More efficient usage of time. Employees spend less time on inefficient tasks like meetings and are less likely to "run out the clock" with time-wasters like social media or excessive breaks.

  • Employee satisfaction. With less stress and a greater work-life balance, happy workers reportedly engage better with their work, along with increased motivation and creativity.

  • Team building. The emphasis on efficiency tends to bring teams closer together, as there's less time to waste on disputes, and the entire team's goals are more focused.

  • Lower unemployment rates. Under the notion of work sharing, companies can fill open hours with new employees, employing multiple workers to fill standard one-person slots. (Of course, this doesn't account for salaries.)

  • Environmental benefits. A four-day work week critically reduces each individual employee's carbon footprint by removing commute pollution.

  • Fewer overhead costs. If all your employees are out of the office one day a week, that reduces all office maintenance fees by 20%, especially electricity.

  • More productivity innovations. By encouraging new time-saving methods, employees are more likely to think up newer and better productivity hacks.


  • The risk is expensive. The most glaring drawback for employers is the costly risk that workers fail to meet their work requirements. This was most evident in Sweden's two-year trial that reduced a 40-hour week to 30 hours, while continuing a five-day structure. While the study recorded higher worker satisfaction, it ultimately became too costly to uphold.

  • Not all industries can participate. Some industries require a 24/7 presence or other such scheduling, making a four-day work week impractical.

  • There might be unutilized labor. A study on the Netherlands' work week revealed that 1.5 million people wanted to work more hours but were unable to.

  • Workers put in the same hours anyway. Some jobs just take time. As was the case in France, some workers are putting in the same hours anyway—the only difference is they're paid overtime for it. While that helps the workers, paying extra overtime is just another expense for the company on top of already potentially paying for a third "day off."

  • Certain industries might suffer. Industries like office real estate benefit from people being at work in a way that wouldn't be transferred to whatever the workers do in their day off.

How to Implement a Four-Day Work Week

While jumping straight to a four-day work week may seem be a bit extreme, plenty of American companies are testing out the impact of reducing their weekly work hours. If you're interested in implementing it in some degree at your company, consider these four steps.

1. Encourage automation

The backbone of a four-day work week is productivity. To make up the loss in time, you'll need to maximize work efficiency everywhere you can. Of course, that's something you should be doing anyway. After all, if a task is simple enough to be automated in the first place, your time is better spent elsewhere. In that sense, implementing a four-day work week is just a convenient excuse to optimize your operations.

Using Zapier, you can connect over thousands of apps to automate workflows that can be completed by a computer. If you start with automation, you might find that there's some wiggle room for you to cut down on hours.

2. Communicate with employees

Working fewer but more productive hours isn't something that can be forced. If your industry can allow for fewer hours, you also need to make sure your employees are up to the task—and that it's even something they want.

Have an open and honest conversation about the idea and see what everyone thinks: Do they want to try it? Do they have suggestions for how to implement it? This could be a formal, company-wide meeting or a more casual conversation, perhaps in a #four-day-week Slack channel. You may also want to send your employees an anonymous survey if you think it would help them open up or be more honest about their opinions.

3. Start gradually and practice adaptive scheduling

Start by reducing the work week by two hours. See how it goes. If productivity increases—or even stays the same—try four hours. Eventually, you'll build up to that four-day work week without as many growing pains.

The logistics of scheduling is one of the lesser-known evils of a reduced work week. This goes double for customer service or any other industry that offers around the clock support to users or clients. To ensure that there are no gaps, you may need to institute rotating schedules. In other words, if you're reducing the work week by two hours, give half your employees the first two hours of Monday and half the last two hours of Friday.

To be sure this kind of rotating schedule doesn't affect internal and external meetings, enlist the help of a meeting scheduler app.

4. Track productivity

You'll need to track your employees' productivity to be sure that the 20% reduction in time is paying off for the company. If you don't already, select a time-tracking app or a project management app that can easily track your team's productivity and output.

Be careful about the implementation here: You don't want your employees to suddenly feel like their time is being micromanaged. Instead, give them the flexibility to be as productive as they can be, while still ensuring that their time is being well spent.

If the working world continues on its current track, the four-day work week is on its way in. Of course, its power depends a lot on context. For example, the American shareholder mentality emphasizes consistent growth, which is necessarily at odds with a mentality of "sure, we can get the same work done in less time." In the U.S., if you can do the same amount of work in less time, then the company may just want you to do more work instead.

But while we wait to see how it all pans out, it's a good time to start experimenting. If you're interested in a reduced-hour work week, test it out at your company in a limited trial and see if your team can accomplish more by working less.

Image of industrial revolution from Jose Romero.09 via Wikimedia Commons. Image of figurine standing on a map from slon_dot_pics via Pexels.

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