Most companies that took part in the four-day workweek trial have decided to continue with the new hours.
Some 56 of the 61 companies which took part in the six-month trial have decided to extend, while 18 of those companies have adopted the shorter week permanently.
Results from the trial, which featured a variety of organisational sectors, including manufacturing and non-profits, will be presented to MPs today as part of a push to give all employees a 32-hour work week.
Joe Ryle, the director of the 4 Day Week Campaign, a non-profit organisation which is pushing for the change, said some of the benefits reported by employers included improved staff well-being and productivity.
“We’re really pleased with the results and hopefully it does show that the time to roll out a four-day week more widely has surely come,” he said in the Guardian.
Kicking off last June, the pilot offered companies taking part workshops and mentoring on how to rethink current working practices.
Although working hours were reduced, there was no reduction in staff pay.
Roughly 2,900 employees across the UK took part in the pilot, with 39% saying they were less stressed, 40% were sleeping better and 54% said it was easier to have a work/life balance.
The number of sick days taken also fell by two-thirds, and companies were able to retain staff, with 57% fewer employees leaving compared to the same period a year earlier.