The analysis revealed that Social Security accumulated an additional $133 to $169 million in costs from disability benefit overpayments to participants in the Ticket to Work program. Overpayments happen in the program when participants who work fail to report their earnings to Social Security or the agency delays in adjusting their benefit amounts. The costs of the agency expands when a recipient is allowed to keep overpayments or exhausts its resources trying to recover them. GAO deduces that participants in the Ticket to Work program were more than twice as likely to receive overpayments within five years of starting the program. While Social Security is in the process of investigating the source of overpayments across all of its benefit programs, overpayments in the Ticket to Work program have, for the most part, been overlooked.