That’s according to the results of the largest ever trial of the four-day working week. In a UK study conducted by Cambridge University with 61 organisations and 2,900 workers, while three firms “paused” the experiment, most participating firms liked it and are not looking back. A third are ready to make the change permanent — and about one in six employees said no amount of money would convince them to return to five days a week. Just as Henry Ford popularised the five-day, 40 hour week in his car factory to increase productivity and reduce turnover, the study showed that going down to four days from five also saw “revenue gains, drops in turnover and lower levels of worker burn out.” The UK data is also backed up by smaller trials from the US, Ireland and Australia.