The Division shall issue a demand for refund of unemployment benefits in each case when a determination of overpayment is made. Except in the case of fraud, an individual shall be notified of the demand for refund within four years after benefits were received. Notification is accomplished when the demand of refund is mailed to the claimant's last known address. In case of fraud, the matter may be forwarded to the Attorney General for investigation and criminal prosecution.
N.J. Admin. Code § 12:17-14.1