After telling employees you were going to close a building due to weather, can the employer change their mind and tell those employees they have to work?
After telling employees you were going to close a building due to weather, can the employer change their mind and tell those employees they have to work?
Yes.
I assume what you really want to know is whether it would be illegal for the employer to fire or take other adverse employment action against employees who don't show up for work. If so, the answer is yes, unless: (1) this is a public university and the applicable civil service laws prohibit it; or (2) the employees are members of a labor union that has a collective bargaining agreement with the employer and the CBA prohibits it.