At-Will Employment

At-will employment is a doctrine of American law that defines an employment relationship in which either party can terminate the relationship with no liability if there was no express contract for a definite term governing the employment relationship. Under this legal doctrine:any hiring is presumed to be "at will"; that is, the employer is free to discharge individuals "for good cause, or bad cause, or no cause at all," and the employee is equally free to quit, strike, or otherwise cease work.
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An employment relationship where the employer has the right to fire a worker for any cause at any time--usually without any notice.