At Will Employment

[Stephen]

The right of employers to fire employees for any reason, or for no reason at all. It also gives employees the legal right to quit their jobs at any time for any reason. Despite this legal doctine, employers may not fire employees in a way that discriminates, violates public policy or conflicts with written or implied promises they make concerning the length of employment or grounds for termination.

Also keep in mind that at will employment does indeed vary by local and state government. Consult a professional in such matters, not a message board.