(a) A member of the Duluth Teachers Retirement Fund Association who is receiving temporary workers' compensation payments related to the member's teaching service and who either is receiving a reduced salary from the employer or is receiving no salary from the employer is entitled to receive allowable service credit for the period of time that the member is receiving the workers' compensation payments upon making the required payment amount.
(b) The required amount payable by the member must be calculated first by determining the differential salary amount, which is the difference between the salary received, if any, during the period of time that the member is collecting workers' compensation payments, and the salary that the member received for an identical length period immediately before collecting the workers' compensation payments. The member shall pay an amount equal to the employee contribution rate under section 354A.12, subdivision 1, multiplied by the differential salary amount.
(c) If the member makes the employee payment under this section, the employing unit shall make an employer payment to the Duluth Teachers Retirement Fund Association equal to the employer contribution rate under section 354A.12, subdivision 2a, multiplied by the differential salary amount.
(d) Payments made under this subdivision are payable without interest if paid by June 30 of the year during which the workers' compensation payments are received by the member. If paid after June 30, payments made under this subdivision must include interest at the rate of 8.5 percent per year. Payment under this section must be completed within one year of the termination of the workers' compensation payments to the member.