When an individual receives unemployment compensation benefits to which he/she is not entitled, it is known as an overpayment. Depending on the situation, these overpayments are divided into two groups: those which are your fault and those which are not your fault.
If you have been overpaid, you will receive the overpayment determination by mail, sent to the most recent address you provided. It is your responsibility, as the claimant, to notify the unemployment compensation service center if there has been a change to your address, regardless of whether you are still filing for benefits.
Under Section 501(e) of the Pennsylvania Unemployment Compensation Law, a determination becomes final unless an
appeal is filed timely. If you disagree with a determination you must file an appeal within 15 days of the mailing date of the determination for the appeal to be considered timely.