Cal. Ed. Code § 88010
Classified employees shall not be required to perform duties that are not fixed and prescribed for the position by the governing board in accordance with Section 88009, unless the duties reasonably relate to those fixed for the position by the board, for any period of time that exceeds five working days within a 15-calendar-day period except as authorized herein.
An employee may be required to perform duties inconsistent with those assigned to the position by the governing board for a period of more than five working days if his or her salary is adjusted upward for the entire period he or she is required to work out of classification and in amounts that will reasonably reflect the duties required to be performed outside his or her normal assigned duties.
Notwithstanding this section, a personnel commission and governing board, or a governing board in a nonmerit system district, by written rule, may provide for an upward salary adjustment for any classified employee required to work out of classification for any period of time less than that required herein.
It is the intent of this section to permit community college districts to temporarily work employees outside of their normal duties but in so doing to require that some additional compensation be provided the employee during such temporary assignments.
This section shall apply to districts that have adopted the merit system in the same manner and effect as if it were a part of Article 3 (commencing with Section 88060).
Ca. Educ. Code § 88010