N.D. Cent. Code § 54-52-17.14
A member reemployed under the Uniformed Services Employment and Reemployment Rights Act of 1994, as amended [Pub. L. 103-353; 108 Stat. 3150; 38 U.S.C. 4301-4333], is entitled to receive retirement credit for the period of qualified military service. The required contribution for the credit, including payment for retiree health benefits, must be made in the same manner and by the same party as would have been made had the employee been continuously employed. If the salary the member would have received during the period of service is not reasonably certain, the member's average rate of compensation during the twelve-month period immediately preceding the member's period of service or, if shorter, the period of employment immediately preceding that period, times the number of months of credit being purchased must be used. Employees must be allowed up to three times the period of military service or five years, whichever is less, to make any required payments. This provision applies to all qualifying periods of military service since October 1, 1994. Effective for years after December 31, 2008, compensation for purposes of Internal Revenue Code section 415 [26 U.S.C. 415], as amended, includes military differential wage payments, as defined in Internal Revenue Code section 3401(h) [26 U.S.C. 3401(h)], as amended. Any payments made by the member to receive qualifying credit inconsistent with this provision must be refunded. Employees shall make application to the employer for credit and provide a DD Form 214 to verify service. If a participating member dies after December 31, 2006, while performing qualified military service, as defined in section 414(u)(5) [26 U.S.C. 414(u)(5)] of the Internal Revenue Code, as amended, the deceased member's beneficiaries are entitled to any death benefits, other than credit for years of service for purposes of benefits, that would have been provided under the plan if the participating member had resumed employment and then terminated employment on account of death. The period of such member's qualified military service is treated as vesting service under the plan.
N.D.C.C. § 54-52-17.14