To avoid collections, you must repay your overpayment balance in full. If you cannot repay the balance in full, you may enter into a payment agreement with DES.All overpayments must be repaid to the Division of Employment Security. Several ABC11 viewers who qualified for benefits but now are being told they may have to pay them back if they don't take action. I stopped filing unemployment claims as soon as I started work and thought that was the end of that. You may file a written appeal of an overpayment determination. Waiver and appeals are very difficult and will require assistance from an attorney. File an appeal via mail.