Nothing in this chapter shall be construed to prohibit any district established pursuant to Part 4 (commencing with Section 40000) of Division 10 of the Public Utilities Code, from extending retirement service credit pursuant to Section 40127 of the Public Utilities Code to any employee of the district who is on an authorized leave of absence to serve as an official of a recognized employee bargaining unit, under all of the following conditions:
This section shall not be operative in any county until such time as the board of supervisors shall, by resolution adopted by majority vote, make the provisions of this section applicable in the county.
Ca. Gov. Code § 31656