A new bill in Congress would move the United States toward a 32-hour standard workweek, with supporters arguing that workers should benefit from productivity gains linked to artificial intelligence and automation. The Thirty-Two Hour Workweek Act, introduced this week by independent Senator Bernie Sanders of Vermont and Democratic Representative Mark Takano of California, would gradually lower the point at which many employees become entitled to overtime pay from the current 40 hours a week to 32. It would also seek to prevent employers from cutting workers' pay or benefits because their standard hours get reduced. The measure does not mean...