One study found that happiness led to a 12 percent spike in productivity, while unhappy workers were 10 percent less productive. Plain and simple, the research asserts, positive emotions invigorate human beings. Happier employees use their time more effectively, increasing the pace at which they can work without sacrificing quality. Naturally, leaders then must inquire about how to shift to a culture of happiness for business outcomes. Well, the first lesson is never to force happiness to happen. You can't implement a prescribed people strategy to squeeze more productivity out of workers. It doesn't work that way.