When it comes to happiness in the workplace, it might be what you’re doing when you’re not at work that makes you more content. Keas, an employer health and engagement program company, recently announced the results of its Employee Happiness Index, the results might surprise you. According to survey, it’s not getting a promotion or working on fun projects that makes most people happy at work. Instead, exercise, good sleeping habits and a rich personal life increases workers happiness levels. 1. Breaking a sweat. The Happiness Index found that 87 percent of workers believe that exercise increases their happiness. Read more.