In this subchapter:
(1) “Bargaining agent” means the police employee group selected under § 143.354 to represent all police officers employed by the municipality, excluding the department head and assistant department heads, during negotiations with the public employer.
(2) “Police employee group” means an organization:
(A) in which at least three percent of the police officers of the municipality participate and pay dues via automatic payroll deduction; and
(B) which exists for the purpose, in whole or part, of dealing with the municipality concerning grievances, labor disputes, wages, rates of pay, benefits other than pension benefits, hours of employment, or conditions of work affecting police officers.
(3) “Public employer” means any municipality or agency, board, commission, or political subdivision controlled by a municipality that is required to establish the wages, salaries, rates of pay, hours, working conditions, and other terms and conditions of employment of police officers. The term includes, under appropriate circumstances, a mayor, manager, administrator of a municipality, municipal governing body, director of personnel, personnel board, or one or more other officials, regardless of the name by which they are designated.