Cal. RTC § 2271.15

Notwithstanding the provisions of Section 2271.1, an additional levy made prior to January 1, 1976, pursuant to the provisions of Section 2271 to pay costs mandated by the 1974 amendments to the Fair Labor Standards Act, or regulations issued pursuant thereto, shall not be invalidated and may continue to be made to meet recurring costs resulting from any program or activity undertaken or implemented by a local agency in order to comply with such amendments or regulations, notwithstanding the repeal, stay or invalidation of such amendments or regulations, if the repeal, stay or invalidation of such amendments or regulations occurs or occurred after the local agency has made such additional levy or has incurred continuing obligations in order to implement the mandated program or activity.