(a) For each pay period in which an employee or annuitant is insured under a policy of insurance purchased under § 1-622.05, a sum computed at a rate determined by the Mayor shall be contributed from the appropriation or fund that is used to pay the employee or annuitant to the carrier of the plan that the employee or annuitant has selected. This sum shall not exceed one-half the amount that is withheld from the compensation of the employee or annuitant under § 1-622.10 for basic life insurance coverage.
(b) The District’s contribution for annuitants shall be paid from the trust fund established in § 1-621.09.