https://www.cbsnews.com/news/one-business-says-a-4-day-week-with-pay-for-5-works/ [cbsnews.com]
The idea sprang from research that found people are typically engaged at work for fewer than three hours a day, said Perpetual Guardian founder Andrew Barnes https://www.vouchercloud.com/resources/office-worker-productivity [vouchercloud.com]. He said he started to think about the pressures that employees are under -- sick kids or waiting for the plumber -- and how those stresses affect productivity and cut back on hours spent in the office.
For some of us, less stress results in better sleep, resulting in fewer mistakes and more productivity.