Four-day workweeks are shaping up to be a successful experiment. Over 80% of companies testing a four-day work week in the U.K. said the new schedule led to better or unchanged productivity, according to nonprofit 4 Day Week Global, with many other countries running similar pilot programs. While some employers remain wary of the challenges associated with this abbreviated work schedule, like redesigning workflows, many employees see the results of this survey as an encouraging step towards better work-life balance.