(a) A judge who is absent from employment by reason of service in the uniformed services, as defined in United States Code, title 38, section 4303(13), and who returns to state employment as a judge upon discharge from service in the uniformed service within the time frame required in United States Code, title 38, section 4312(e), may obtain service credit for the period of the uniformed service, provided that the judge did not separate from uniformed service with a dishonorable or bad conduct discharge or under other than honorable conditions.
(b) The judge may obtain credit by paying into the fund equivalent member contribution based on the contribution rate or rates in effect at the time that the uniformed service was performed multiplied by the full and fractional years being purchased and applied to the annual salary rate. The annual salary rate is the average annual salary during the purchase period that the judge would have received if the judge had continued to provide employment services to the state rather than to provide uniformed service, or if the determination of that rate is not reasonably certain, the annual salary rate is the judge's average salary rate during the 12-month period of judicial employment rendered immediately preceding the purchase period.
(c) The equivalent employer contribution and, if applicable, the equivalent employer additional contribution, must be paid by the employing unit, using the employer and employer additional contribution rate or rates in effect at the time that the uniformed service was performed, applied to the same annual salary rate or rates used to compute the equivalent member contribution.
(d) If the member equivalent contributions provided for in this section are not paid in full, the judge's allowable service credit must be prorated by multiplying the full and fractional number of years of uniformed service eligible for purchase by the ratio obtained by dividing the total member contributions received by the total member contributions otherwise required under this section.
(e) To receive allowable service credit under this section, the contributions specified in this section and section 490.121 must be transmitted to the fund during the period which begins with the date on which the individual returns to judicial employment and which has a duration of three times the length of the uniformed service period, but not to exceed five years. If the determined payment period is calculated to be less than one year, the contributions required under this section to receive service credit may be within one year from the discharge date.
(f) The amount of allowable service credit obtainable under this section and section 490.121 may not exceed five years, unless a longer purchase period is required under United States Code, title 38, section 4312.
(g) The state court administrator shall pay interest on all equivalent member and employer contribution amounts payable under this section. Interest must be computed at a rate of 8.5 percent compounded annually from the end of each fiscal year of the leave or break in service to the end of the month in which payment is received.