Sec. 775.033.  LIABILITY OF DISTRICT.  (a)  A district is not liable for a claim arising from the act or omission of an employee or volunteer under an oral or written contract with the district if the act or omission:
(1)  is in the course and scope of the employee's or volunteer's duties for the district; 
(2)  takes place during the provision of emergency services; 
(3)  is not in violation of a statute or ordinance applicable to emergency action;  and
(4)  is not wilful or wantonly negligent.
(b)  This section does not expand the liability of a district.
Acts 1989, 71st Leg., ch. 678, Sec. 1, eff. Sept. 1, 1989.