California Code, Government Code - GOV § 21756

(a) Notwithstanding any other provision of law, the retirement rights conferred by this part upon any person who for the first time becomes a member on or after January 1, 1990, shall be subject to, and that person shall not have any retirement right or benefit that exceeds, and no retirement right or benefit under this part shall accrue to or vest in that person, that exceeds, the limitations in the Internal Revenue Code upon public retirement systems.

(b) The board shall provide to each employer a notice of the content and effect of subdivision (a) for distribution, prior to employment, to each person who may become a member and to each person who for the first time becomes a member on or after January 1, 1990.

(c) Part 3 (commencing with Section 20000) shall be construed as if it included this section.