Cal. Government Code § 19854

(a) Every employee, upon completion of six months of his or her initial probationary period in state service, shall be entitled to one personal holiday per fiscal year. The personal holiday shall be credited to each full-time employee on the first day of July. No employee shall lose a personal holiday credit because of the change from calendar to fiscal year crediting. The department head or designee may require the employee to provide five working days’ advance notice before a personal holiday is taken, and may deny use subject to operational needs. The department may provide by rule for the granting of this holiday for employees. (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 shall not become effective unless approved by the Legislature in the annual Budget Act.