Over the last century, researchers and business executives alike have sought to increase the productivity of employees. More recently, one way in which employers have sought to do so is through increasing the happiness of their employees. However, despite the recent traction that this idea has gained in corporate circles, the idea is not necessarily supported by research. In this Harvard Business Review article, authors André Spicer and Carl Cederström take a closer look at what the research actually says about happiness in the workplace.