For questions regarding an Overpayment Waiver, contact Unemployment Customer Service at 1-800-300-5616. Repay Your Overpayment.Local Forms, Adoption Forms, Family Law Forms, Juvenile Forms, Probate and Court Investigator's Forms, Small Claims Forms, Traffic Forms The Hearing Officer will document the waiver on form 9012, General Assistance Time Waiver. This form is for late property tax payments only not for fees incurred due to returned check payments from your financial institutions. Refunds for Overpayment of Contributions. Complete the LASC refund request form and upload to your filing.