Select Benefit Overpayment Services. You have been sent a Notice of Action letter that advised you of reason for the overpayment and the amount you were overpaid.Overpayment Notices Guidance Over the past few weeks UC has continued to send "overpayment notices" to UAW 2865 and 5810 members. Establish Installment Agreements (Notices of Overpayment and Benefit Overpayment Collection Notices) and apply for overpayment waivers. Once the overpayment is discovered, SSA will send a letter called a "notice of overpayment". Did You Receive a Notice of Overpayment?