This is a notice that is sent to the claimant with the amount of benefits requiring repayment, as well as appeal rights and process details. Make sure to fill out Annex B in your overpayment letter within the deadline provided even if you file a grievance.Consider filing a grievance. For ACTIVE faculty, staff and students for an overpayment in the Current Calendar Year. If an employee is not due a final paycheck due to an overpayment, he or she shall be notified in writing and expected to payback the overpayment monies in full. Members receiving overpayment letters must respond promptly, as they are given four weeks to do so. This letter specifies the weeks and amount that DES alleges you were overpaid. It will also classify the overpayment into one of the below categories.