Can an employer say you get 10 holidays and then not give them to you? For example you work a 4 day work week but when there is a holiday, the holiday is considered your day off and you are still working 4 days.

Can an employer say you get 10 holidays and then not give them to you? For example you work a 4 day work week but when there is a holiday, the holiday is considered your day off and you are still working 4 days.