(a) Except as otherwise required by federal law or by the provisions of this section, after June 11, 2000, any rule and regulation relating to overtime compensation for state employees adopted by the secretary of administration shall provide that only hours actually worked may be considered in determining whether overtime compensation is due and the amount of overtime compensation due, whether in the form of overtime pay or compensatory time off in lieu of overtime pay. After June 11, 2000, to the extent that any rule and regulation previously adopted by the secretary of administration contains a provision contrary to this section, that portion of the rule and regulation, and documents pertaining to such portion of the rule and regulation, shall have no effect and shall not be enforced.

(b) Each official state holiday which occurs within a regularly scheduled workweek may be counted as time worked in determining the amount of overtime work for state employees.