Yes. No law requires employers to provide paid vacation. Those that choose to offer it are largely free to decide who may use it and under what circumstances. That said, an employer may not discriminate in providing paid vacation (or any other benefit) by, for example, making it available only to men or by prohibiting employees from using their paid vacation for Jewish holidays while allowing employees of other denominations to use paid vacation for their religious observances. Beyond this legal restriction, however, employers are generally free to set their own rules regarding vacation -- and statistics show that many employers choose not to offer vacation to part-timers.