(a) Federal-state agreement. The state Comptroller, with the approval of the Governor, is hereby authorized to enter on behalf of the state into an agreement with the federal agency, consistent with the terms and provisions of this chapter, for the purpose of extending the benefits of the federal Old-Age and Survivors' Insurance System to employees of the state or any political subdivision thereof or of any instrumentality of any one or more of the foregoing with respect to services specified in such agreement, which constitute employment as defined in Section 36-28-1. Such agreement may contain such provisions relating to coverage benefits, contributions, effective date, modification and termination of the agreement, administration and other appropriate provisions as the state Comptroller and federal agency shall agree upon, but, except as may be otherwise required by or under applicable federal law as to the services to be covered, such agreement shall provide in effect that:
(1) Benefits will be provided for employees whose services are covered by the agreement (and their dependents and survivors) on the same basis as though such services constituted employment within the meaning of Title II of the Social Security Act;(2) The state will pay to the federal agency, at such time or times as may be prescribed by the applicable federal law or by regulation promulgated thereunder, contributions with respect to wages, as defined in Section 36-28-1, equal to the sum of the taxes which would be imposed by Sections 3101 and 3111 of Title 26, U.S.C.A., if the services covered by the agreement constituted employment within the meaning of that act;(3) Such agreement shall be effective with respect to services performed after a date specified therein but shall in no event be effective with respect to any service performed prior to January 1, 1951;(4) All services which constitute employment as defined in Section 36-28-1 and are performed in the employ of the state by employees of the state shall be covered by the agreement; and(5) All services which constitute employment as defined in Section 36-28-1 are performed in the employ of a political subdivision or in the employ of an instrumentality of either the state or a political subdivision and are covered by a plan which is in conformity with the terms of the agreement and has been approved by the state Comptroller under Section 36-28-5 shall be covered by the agreement.