Bloomberg reported that 61 organizations and about 2,900 workers voluntarily adopted 4 day work weeks from June to December 2022 and, “about one in six employees in the study said no amount of money would convince them to return to five days a week.”
“… Though the studies are well-designed and include organizations across a swath of industries, weak points include that the participating organizations skew smaller and that the trials are not randomized: the participating organizations all opt in and invest substantial efforts in trainings and planning—meaning that leaders are biased toward championing shorter work schedules.”