Workers at companies that tested out a 4-day workweek are happier and more efficient — and firms made more money. One lawmaker says it's 'here to stay.'

Workers at companies that tested out a 4-day workweek are happier and more efficient — and firms made more money. One lawmaker says it's 'here to stay.'::The latest data shows that workers and companies prosper under a four-day workweek. Rep. Mark Takano wants to make it law.