If an overpayment meets certain criteria, TWC may file an Abstract of Assessment in the county of record. How to Repay: • Offsetting: Once offsetting programming is complete, TWC may offset future benefit payments to recoup the.If your overpayment meets certain criteria, we can set up a repayment plan. Call: 512-936-3338; Fax: 512-936-3799. Texas Workforce Commission's Unemployment Benefit Services – UI Payment Portal. Overpayments occur when claimants receive unemployment benefits that they were not eligible to receive. An overpayment occurs when TWC pays claimants unemployment benefits they are not entitled to receive. An overpayment stays on their record until it is repaid.