Does anyone know if an employer can require it's employees to use vacation when the employer closes the office? For example, can the employer state that the office is closed for the holiday on December 25 and December 26, but the employees must use vacation days in order to be paid?
You are asking two different questions.
- Can I force employees to take vacation? The answer is yes in every state I know of, which isn't every state. I would guess yes in PA but someone else here can probably answer more authoritatively.
- Can I not pay non-exempt employees during office closures unless they use vacation time? Yes.
If yes, is the employer required to give advanced notification to employees so that they can plan accordingly (hold back vacation days for this purpose)?
I don't think you have to give advance notice either way. The Company can set whatever schedule it likes, unless you have a CBA or other authoritative policy, practice, law, or regulation in place. You don't have to tell people to hold back vacation time in case there's an ice storm, do you?