You’d like to take time off work but you don’t have the vacation days to cover the time away. How do you ask your boss for an unpaid leave? Start by doing your homework. Has this been done before? Did it work? When building your case, make sure to present how taking this opportunity. If you need a break in order to avoid burnout, explain how the extended absence will revitalize you to work even harder when you come back. Plan your leave to minimize the impact on coworkers and clients. Try to head off any possible objections but be flexible to other options. Framing the opportunity well can go a long way.