You can terminate a nanny’s employment by providing her with written notice of termination. The notice should state the effective date of the termination and the reasons for the termination. If you terminate a nanny's employment because she is no longer needed, you should give her at least two weeks' notice. However, note that you cannot terminate an employee based on race, gender, national origin, age, handicap, sexual orientation, or marital status. If you do so, you may have to face a discrimination lawsuit.