If the government has overpaid you, the National Finance Center will notify you by sending you a bill called the “Notice of Intent to Offset Salary.” This notice will inform you of the reasons for overpayment and when it occurred. You can send a waiver request to the agency that made the overpayment, and the agency will make a determination regarding whether to grant the waiver in full, in part, or not at all. Each agency determines its policies for waiver approval. Be sure to check your paystubs to ensure that you are getting paid correctly. You should report inaccuracies immediately. Once you receive a notice that there has been an overpayment, it is difficult to obtain a waiver to not have to pay the difference. To learn more about overpayment waivers, click here.