The CEO of British fintech company, Atom Bank, Mark Mullen moved his company to a four-day work week last year. Employees work fewer hours, for the same pay. It’s a bold move but, according to Mullen, it’s common sense. His costs haven’t changed, he hasn’t lost any customers and he says his staff is more productive. Plus, at the end of one’s career, who regrets not having spent more time at work?