Notwithstanding any other provisions of this part, whenever the employer, by formal action, determines that because of an impending curtailment of, or change in the manner of, performing service, the best interests of the state would be served by encouraging the retirement of legislative employees, and that sufficient economies could be realized to offset any cost to the employer resulting from this section, an additional two years of service shall be credited to legislative employees who are members, pursuant to

Section 20324, if the following conditions exist: (

a) The member is credited with five or more years of service and retires during a period not to exceed days or less than days commencing no sooner than the operative date of the formal action of the employer that shall specify the period. (

b) The employer transmits to the retirement fund an amount determined by the board that is equal to the actuarial equivalent of the difference between the allowance the member receives after the receipt of service credit under this

section and the amount the member would have received without that service credit. The transfer to the retirement fund shall be made in a manner and time period acceptable to the employer and the board. The amount of service credit shall be two years regardless of credited service. Any member who qualifies under this section, upon subsequent reentry to this system shall forfeit the service credit acquired under this section. This

section shall not be applicable to any member otherwise eligible if the member receives any unemployment insurance payments arising out of employment with an employer subject to this part during a period extending one year beyond the operative date of the formal action of the employer or if the member is not eligible to retire without the additional credit available under this section. As used in this section, “employer” means the Joint Rules Committee, the Joint Legislative Budget Committee, the Joint Legislative Audit Committee, the Senate Committee on Rules, and the Assembly Rules Committee, with respect to their respective employees.