CA Gov't Code Section 11021

(a)

When a state agency is open or operates on Saturday such state agency may operate with a skeleton crew from 9 a.m. to 12 noon of each Saturday if the total number of hours per week of its employees is not less than the total number of office hours established in this article.

(b)

If the provisions of this section are in conflict with the provisions of a memorandum of understanding reached pursuant to Chapter 12 (commencing with Section 3560) of Division 4 of Title 1, the memorandum of understanding shall be controlling without further legislative action, except that if such provisions of a memorandum of understanding require the expenditure of funds, the provisions shall not become effective unless approved by the Legislature in the annual Budget Act.