World's Largest Four-Day Work Week Experiment Begins

Thousands of UK employees will work 80% of the traditional work week while maintaining 100% of their salaries.

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Previous research on the shortened work week have seen increases in productivity and employee happiness.
Previous research on the shortened work week have seen increases in productivity and employee happiness.
Photo: Christopher Furlong (Getty Images)

Companies in the United Kingdom will see how a four-day work week affects their productivity and employee happiness. It’s part of a six-month-long pilot program, the largest of its kind. This means thousands of workers in the UK will be able to savor an extra day off, with no reduction in pay.

Over 3,300 employees from 70 different companies are participating in the UK trial of the four-day work week. This is according to a press release from 4 Day Week Global, the nonprofit that’s organizing the research around this most recent effort to examine cutting one day of work. 4 Day Week Global says this is the biggest pilot program of its kind, where, as long as workers maintain 100% of their productivity, they will also maintain 100% of their salary while working 80% of the traditional work week. Companies involved range from fish and chips shops, to PR firms, to tech companies. 4 Day Week Global is also in partnership with Autonomy, a labor think tank, as well as researchers from Cambridge University, Boston College, and Oxford University.

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“The UK is at the crest of a wave of global momentum behind the four-day week,” said Joe O’Connor, CEO of 4 Day Week Global, in a press release. “As we emerge from the pandemic, more and more companies are recognizing that the new frontier for competition is quality of life, and that reduced-hour, output-focused working is the vehicle to give them a competitive edge.”

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Perpetual Guardian, 4 Day Week Global founder Andrew Barnes’ estate planning company, ran a similar pilot program in New Zealand for eight weeks in 2018. The program involved 240 Perpetual Guardian employees and was a collaboration with researchers from the University of Auckland and Auckland University of Technology, as described in a white paper. According to the Guardian, the researchers involved in this pilot collected qualitative and quantitative data before, during, and after the eight-week trial period, and they found that 78% of employees felt better about their work-life balance, with increases in productivity and decreases in stress. The UK’s pilot program will be able to broaden the scope of these results, and 4 Day Week Global has also begun the intake process of a pilot program for the U.S. and Canada.

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The four-day work week is an alluring reconfiguration of the traditional labor force. Microsoft experimented with the four day-week at its Japan offices in 2019, and saw higher sales per employee and increases in employee happiness. In 2021, California Representative Mark Takano introduced the idea as potential legislation in the U.S., citing the pandemic’s effect on unemployment as a factor.

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