A growing number of organizations around the world are evaluating switching to a four-day workweek, and many are seeing the benefits of a more truncated schedule. It’s taken hold in some European countries, and while the idea might seem radical in a place like the United States, where working long hours is often viewed as a mark of pride, some organizations are tentatively exploring this option. Shake Shack is one company that started testing the idea about a year and a half ago. Managers&