discrimination.

New York is an employement at will state, which means that in the absence of a contract, collective bargaining agreement to the contrary, employers have a great deal of flexibility in hiring, firing, reassigning, etc. employees. They can do these things for any reason that is not discriminatory or otherwise illegal--e.g. they can't discriminate against someone for age, race, religion, etc.--or indeed for no reason at all. Therefore, it is most likely the case that your employer cann reassign you, whether to a different department, physical office, position, etc. They can also reduce your wage, again, as long as it's based on a discriminatory reason for violates some written agreement or policy. If you don't like or want the reassignment, you only option is to quit/resign.

Most employers, btw, would not let one spouse be another's supervisor for *any* length of time. It creates a liability and morale risk for them--that other employees may conclude that favoritism is being show to the spouse--and also risks pulling personl/family issues into the workplace.