A professional who manages business affairs of labor union. Responsibilities include:

• Coordinates and directs such union functions as promoting local membership, placing union members on jobs, arranging local meetings, and maintaining relations between union and employers and press representatives.
• Visits work sites to ensure management and labor employees adhere to union contract specifications.
• May assist in developing plant production and safety and health measures.
• May negotiate with management on hours, wages, individual grievances, and other work-related matters affecting employees.