The RAND Corporation studied their own 2000 academic quality statisticians and researchers, and they found that even with generous vacation time (through the tr

The RAND Corporation studied their own 2000 academic quality statisticians and researchers, and they found that even with generous vacation time (through the traditional accrued vacation days practice), most researchers were so engrossed in their work that they still didn't take their vacation. They then analyzed their people and found that those who did take their vacation performed better than those who didn't. Subsequently, they wanted to figure out how to incentivize people to take vacation, so they instituted sabbatical pay. Specifically, they pay employees a bonus to take vacation. In contrast, I work at a startup with unlimited vacation, and plenty of employees are at risk of burnout because they rarely take their vacation -- ultimately hurting the company along with themselves.