The five-day workweek is a relic of the industrial age, not a business best practice, and a growing number of organizations are proving it.

In Do More in Four: Why It’s Time for a Shorter Workweek, Joe O’Connor and Jared Lindzon draw on global pilots, extensive research, and case studies from organizations around the world to make a data-driven case for why companies that move to four days are getting more done, not less.