Your letter must include your name, address, Social Security number, and why you disagree with the determination. In Benefit Overpayment Services, you can make a payment, view past payments, and set up an installment agreement to make monthly payments.What should I do if I get a Notice of Overpayment? For example, if you overpaid the employee, explain the mistake and communicate that the employee is not entitled to the money. In the event I leave employment with this agency, I authorize the overpayment balance to be deducted from my final payroll payment or terminal leave cashout. UC has notified a number of workers that they will need to return what UC claims are overpayments in relation to last year's strike.