For the purposes of this act:
"Employer" means a person engaged in business who has employees, including the State and any political subdivision or other instrumentality of the State.
"Employee" means any person engaged in service to an employer for wages, salary or other compensation.
"Political matters" include political party affiliation and decisions to join or not join or participate in any lawful political, social, or community organization or activity.
N.J.S. § 34:19-9