Gov. Code, § 19774

(a) Employee members of reserve military units and the National Guard required to perform inactive duty obligations, other than inactive and active duty training drill periods as set forth in Section 19775.1, shall be granted military leave of absence without pay as provided by federal law. Employee members who attend or perform inactive duty obligations, other than inactive and active duty training drill periods, as set forth in Section 19775.1, may elect to use vacation time or accumulated compensatory time off to attend those other obligations.

(b) If the provisions of this section are in conflict with the provisions of a memorandum of understanding reached pursuant to Section 3517.5, the memorandum of understanding shall be controlling without further legislative action, except that if the provisions of a memorandum of understanding require the expenditure of funds, the provisions may not become effective unless approved by the Legislature in the annual Budget Act.