This industry comprises establishments primarily engaged in promoting the interests of organized labor and union employees.

Including:

• Collective bargaining units
• Employees' associations for improvement of wages and working conditions
• Federation of workers, labor organizations
• Federations of labor
• Industrial labor unions
• Labor federations
• Labor unions (except apprenticeship programs)
• Trade unions (except apprenticeship programs)
• Trade unions, local
• Unions (except apprenticeship programs), labor