This memorandum serves as notification of an overpayment of wages that you received and the subsequent repayment that is your responsibility. The salary overpayment resulted because .The Department will send a garnishment release letter to the taxpayer's employer once the tax liability is paid in full. Members should fill out and submit Form 5 (Withdrawing Your Retirement Service Credit and Contributions) to the Retirement Systems Division. How do I apply for Child Support Services? You can complete the application at your local CSS office or apply online.