(a) A state employee paid a full-time salary shall work not less than 40 hours a week.
(b) The chief administrator of a state agency that must maintain certain services 24 hours a day may require essential employees who perform those services to be on duty for a workweek that exceeds 40 hours in necessary or emergency situations.
(c) This section does not apply to a houseparent who is employed by and lives at a Texas Juvenile Justice Department facility.