An employee shall not be coerced by the appointing power, a supervisor or another employee to reduce his or her worktime involuntarily; and an employee shall not be excluded from participation in reduced worktime when the conditions outlined in Government Code section 19996.21 and section 599.833 of these regulations are met. Employees who have reduced their worktime shall not be assigned workload or mandatory overtime that is excessive in comparison to that assigned to other employees performing similar work under the same appointing power. Violation of any of the provisions of this regulation may be the basis for a grievance under sections 599.855 through 599.872 of these regulations or the applicable provisions of a Memorandum of Understanding.