(a) The department may recover by a civil action any amounts paid to an individual through error, or, in the discretion of the commissioner, the amount erroneously paid may be deducted from any future payments of benefits accruing to an individual under the provisions of this chapter provided that there has been a final decision as defined in section 69D. Any civil action brought pursuant to this subsection shall be commenced within six years from the date of the erroneous payment.

If any individual fails to pay when due any amount paid to said individual because of such individual's failure knowingly to furnish accurate information concerning any material fact, including amounts of remuneration received, as provided in subsection (c) of section twenty-four, such overdue amount shall carry interest at a per annum rate provided by subsection (a) of section fifteen from the due date until paid. The total amount of interest assessed shall not exceed fifty percent of the total amount due.

(c) The commissioner may waive recovery of an overpayment made to any individual, who, in the judgment of the commissioner, is without fault and where, in the judgment of the commissioner such recovery would defeat the purpose of benefits otherwise authorized or would be against equity and good conscience.

Any person aggrieved by a determination or decision of the commissioner that recovery of an overpayment not be waived shall have the right to appeal such determination or decision in accordance with the provisions set forth in sections thirty-nine to forty-two, inclusive.