It depends on what they intend to do with that year off. If they want to travel, they need to be completely off and you can grant it to some people. If they w

It depends on what they intend to do with that year off. If they want to travel, they need to be completely off and you can grant it to some people. If they want to work on some side project, then say no to some of them but propose a part-time job (work 2 or 3 days a week). Make sure to explain why you are saying no (can not afford to give half the staff a year off).