NATCA

National Air Traffic Controllers Association

Location: Washington, DC

Number of members: 20,000

Client since: 2007

Website: http://www.natca.org

Certified in 1987, the National Air Traffic Controllers Association is one of the strongest and most influential labor unions in the federal sector. NATCA, over 20,000 members strong, represents not only controllers but other safety-related professionals, including engineers, traffic management coordinators and staff specialists.