If the determination or redetermination is issued in hand, the claimant shall, if a waiver is requested at that time, have the opportunity to present evidence to the Commissioner or his authorized representative on the issue of whether the overpayment shall be waived. If the determination or redetermination is issued by mail, the claimant shall have the right to request a waiver, and the Commissioner or his authorized representative shall promptly arrange for the claimant to have the opportunity to present such evidence. A waiver request may be filed at any time and shall be promptly considered by the Department.
430 CMR, § 6.07