(d1) The last employer of a payee who retires on or after August 1, 2016, and who receives any supplemental benefit payment under this section shall be required to reimburse the QEBA in the amount of any supplemental benefit payment made to that payee. The reimbursement amount shall be calculated on an annual basis every calendar year. For purposes of calculating the reimbursement amount, the Board of Trustees may include a pro rata share of direct costs attributable to administration of the QEBA. The total amount of reimbursement owed by The University of North Carolina and UNC Health Care shall not exceed five hundred thousand dollars ($500,000) annually. The Fiscal Research Division of the General Assembly shall be required to review all reimbursement amounts prior to notifying an employer of the reimbursement amount owed. The employer shall have 60 calendar days from the date of notification of the reimbursement amount owed to pay the amount in full or the employer shall be assessed a penalty, in lieu of interest, of one percent (1%) per month, or fraction thereof, that the payment is made beyond the due date.