Companies hail in four-day week trial a 'resounding success' as none plan to return to full week

First pilot of 4-Day Week Global deemed “resounding success”
First pilot of 4-Day Week Global deemed “resounding success” Copyright 4 Day Week Global
By Camille Bello
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Among the 27 companies surveyed, none are planning on stopping the four-day workweek scheme after the pilot ends.


2022 was arguably the year of the 4-day workweek: the UK started a six-month pilot programme hailed the biggest of its kind; Spain launched its own pilot in December, and Belgian employees won the right to decide whether they want to work four or five days a week.

In Scotland, the government announced the beginning of a trial to start in 2023 and Wales is also considering it.

Now 4-Day Week Global, the company that ran the UK trial alongside Cambridge University and Boston College in 2022, released the results of their first completed international pilot programme, the largest published trial to date.

The study, which included 33 companies and almost 1,000 employees, found that none of the participating companies planned on returning to a 5-day week once the trial had resumed.

And 70 per cent of employees taking part also said their next job would need to offer a considerable salary increase to go back to the 5-day schedule.

Of those surveyed as part of the study, 13 per cent said the wage increase would have to be more than 50 per cent. And 13 per cent said that no amount of money could convince them to give up the four-day week.

How does the four-day workweek trial operate?

The trials are based on a model called 100-80-100. In it, companies authorise employees to work 80 per cent of their regularly scheduled hours in return for 100 per cent of their pay, all with the promise of still delivering 100 per cent of their standard output.

What did the data show?

Of the 33 companies that participated in the international trial, 27 filled out a survey where they were asked about their overall experience and whether they would continue their 4-day week.

Among the 27 surveyed, 18 said they were definitely continuing after the pilot, seven said they were planning to continue but hadn't made a final decision, one said it was leaning towards continuing and one was not sure yet. None of the companies surveyed suggested a wish to stop the scheme.

On a scale of 0-10 with 0 being very negative and 10 being very positive, the average rating companies gave to the trial was a 9.

From the employee side, on the same scale of 0-10, the average overall experience of the trial was 9.1.

Perhaps unsurprisingly, virtually all of the employees (96.9 per cent) said they wanted to continue the trial.

Workers reported significant improvements in the indicators of stress, burnout, and fatigue. Work-family conflict also decreased, while physical and mental health showed a positive shift.

The positive trend is reportedly attributed to employees’ having more time for their hobbies, household work, and personal grooming.

Workers were happy, but what about productivity and finances?

Participating companies were asked to provide data on revenue and employee productivity during the duration of the trial. They were also asked for data from the same six-month period a year earlier to provide a larger comparable period.

For the six companies that supplied sufficient data across the six months, overall revenue rose 8.14 per cent (weighted by company size) by the end of the trial. And when the revenue was compared with the same six-month period the previous year, the increase was 37.55 per cent.

Proponents of the four-day week argue that the shorter work scheme provides multiple benefits to the organisations that implement the schedule, to the employees who work it, and also to the climate, due to reduced energy expended in commuting.

The collected evidence of their first completed pilot programme shows a shorter workweek scheme is "overwhelmingly" positive, 4-Day Week Global said.


It added that their calculations should serve as a strong indication that "it’s time to retire the nearly hundred-year-old convention of the five-day, forty-hour week".

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