In this subchapter:
(1) "Firefighter" means a person who is defined as fire protection personnel under Section 419.021, Government Code, and who is employed by a municipality.
(2) "Firefighters association" means an employee organization in which firefighters employed by a municipality participate that exists for the purpose, in whole or in part, of dealing with the municipality or public employer concerning grievances, labor disputes, wages, rates of pay, hours of work, or conditions of work affecting firefighters.
(3) "Public employer" means a municipality or the fire department of the municipality that is required to establish the wages, salaries, rates of pay, hours of work, working conditions, and other terms and conditions of employment of firefighters employed by the municipality.