While email has made our work easier in many ways, it’s also made it hard for us to really escape the office, particularly now that our smartphones are sure to remind us every time something urgent needs our immediate attention. The Guardian reports that French employers’ federations and labor unions have just signed an agreement that requires French employees to shut off their work-related smartphones after they leave the office, which means that their bosses won’t be able to nag them once they go home for the day. While our natural American instinct is always to laugh at those lazy Frenchmen and their crazy ideas, there’s actually some research that shows this might help make French workers more, not less, productive.