(a) For purposes of this section:

(1) "Elected public official" means any member of the Legislature or any member of the legislative body of any political subdivision; and

(2) "Temporary legislative employee" means any employee of the Clerk of the House of Delegates, the Clerk of the Senate, the Legislature or a committee thereof, including the Joint Committee on Government and Finance, whose employment is classified as temporary and who is employed to perform services required by the Clerk of the House of Delegates, the Clerk of the Senate, the Legislature or a committee thereof, as the case may be, for regular sessions, extraordinary sessions and/or interim meetings of the Legislature.

(b) If the retirement annuity of a retirant (or, if applicable, his or her beneficiary) with at least 25 years of credited service as of the effective date of this section is less than $750 per month (including any supplemental benefits or incentives provided by this article), then the monthly retirement benefit for the retirant (or if applicable, his or her beneficiary) shall be increased to $750 per month: Provided, That any year of credited service while an elected public official or a temporary legislative employee may not be taken into account for purposes of this section.

(c) Notwithstanding the provisions of subsection (b) of this section to the contrary, if the retirement annuity of a beneficiary of a retirant who chose option B – modified joint and survivor annuity as provided in §5-10-24 of this code, and who had at least 25 years of credited service as of the effective date of this section is less than $375 per month (including any supplemental benefits or incentives provided by this article), then the monthly retirement benefit for the beneficiary shall be increased to $375 per month: Provided, That any year of credited service while an elected public official or a temporary legislative employee may not be taken into account for purposes of this section.

(d) The payment of any minimum benefit under this section is in lieu of, and not in addition to, the payments of any retirement benefit or supplemental benefit or incentives otherwise provided by law: Provided, That the minimum benefit provided in this section is subject to any limitations thereon under Section 415 of the Internal Revenue Code of 1986, as amended, and §5-10-27a of this code.

(e) Any minimum benefit conferred in this section is not retroactive to the time of retirement and applies only to members who have retired prior to the effective date of this section, or, if applicable, to beneficiaries receiving benefits under the retirement system prior to the effective date.