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.Texas Workforce Commission's Unemployment Benefit Services – UI Payment Portal. 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. If your overpayment meets certain criteria, we can set up a repayment plan. Call: 512-936-3338; Fax: 512-936-3799.