Your letter must include your name, address, Social Security number, and why you disagree with the determination. Select Benefit Overpayment Services.The salary overpayment resulted because . Step 1: To file a Request for Waiver, fill out form SSA-632-BK, called a. "Request for Waiver of Overpayment Recovery. To ask for reconsideration, fill out and file Form SSA-561-U2 with Social Security. If we can't waive collection, we may use this form to decide how you should repay the money. Please answer the questions on this form as completely as you can.