OWCP-20, Overpayment Recovery Questionnaire: When an overpayment occurs, the U.S. Department of Labor (DOL) is required by law to recover such amount unless recovery of the overpayment may be waived in full or in part. The request for information in this form is authorized by law and is necessary to assist DOL in making the waiver determination. If DOL cannot waive recovery of the overpayment, the financial information in this form will be important to establish the recovery amount and repayment period.