California Code, Government Code - GOV § 31896

If an increase in the retirement allowance or other benefit payable to any beneficiary pursuant to the provisions of this chapter, whether such increase begins prior or subsequent to the effective date of this article, results in the decrease of the amount of any monetary payments due to the same beneficiary from any public agency, such retirement allowance or other benefit shall be so reduced as to result in the maximum total benefits to such beneficiary.