Summary  The idea of a four-day or shorter workweek is gaining momentum worldwide — a big thanks to the remote work boom during the Covid-19 pandemic. A recent study from 4 Day Week Global, a nonprofit group that has been conducting four-day week pilot programs in several countries, found that employees expressed satisfaction with their overall productivity and performance. "The idea of reducing work time has been around for quite some time," said Charlotte Lockhart, founder and managing director at 4 Day Week Global. "However, it is real now. We have thousands of companies around the world that are actually reducing work time in one way or another." Shortening the workweek to four days isn't a good fit for every company, however. Alter Agents, a market research company, based in Los Angeles, found it didn't suit their employees. "What happened after 10 weeks was that our most valuable metrics,...