Recently, happiness has become something employers aspire to. It makes sense. Very few of us want to be the manager who makes employees miserable, even if it results in higher productivity. Happiness is so important, in fact, that Japanese tech conglomerate Hitachi is introducing a new happiness badge, which tracks each employee’s well-being by monitoring how they move around and sit at work. The details of the badge are still murky, but its existence highlights a key point about work: happiness is now seen as intrinsic to productivity.