The Agency must immediately notify the employee, in writing, of the amount overpaid and the method of recovery. If you were overpaid, you will receive a written notice in the mail.The salary overpayment resulted because . I received a letter from the dept. Please be advised that resumes, letters of reference, etc. , submitted with your application become the property of City of Franklin and cannot be returned. Overpayments occur when you get benefits and we later find that you were not eligible. You need to pay back these benefits to us.