GOV §19849.4: (a) Any state employee when working overtime at his or her headquarters on state business may receive his or her actual and necessary expenses, during his or her regular workweek, subject to rules and

(a) Any state employee when working overtime at his or her headquarters on state business may receive his or her actual and necessary expenses, during his or her regular workweek, subject to rules and regulations adopted by the department limiting the amount of the expenses and prescribing the conditions under which the expenses may be paid; provided, however, that each state agency may determine the necessity for and limit such expenses of its employees in such manner as does not conflict with and is within the limitations prescribed by the department. (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 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.