It shall be an unlawful employment practice for an employer to discriminate in the hiring or discharging of an individual because of such individual's membership in a volunteer emergency responder organizer. This section shall not prevent an employer from taking otherwise lawful actions regarding hiring, discharging or requiring attendance of such individual. For purposes of this section “volunteer emergency responder” means a volunteer firefighter, a member of a ladies auxiliary of a volunteer fire company, volunteer emergency medical technician and/or a volunteer fire police officer.