During the period that the arbitration is pending, an employer or receiver or an agent of the employer may not discharge an employee who is a party to the arbitration except for:

1. (1) the employee's inefficiency, violation of law, or neglect of duty; or
2. (2) the employer's need for a work force reduction.

Acts 1993, 73rd Leg., ch. 269, Sec. 1, eff. Sept. 1, 1993.