A labor union is an organization that handles contract negotiations with the company for employees. You find unions in manufacturing, law enforcement, health care, emergency services, transportation, engineering, broadcasting, and other industries. The specific job duties vary, depending on the industry, but you can find union opportunities for women in different areas. The primary qualifications are joining the union and experience in the industry. You may start as a union representative within your company, sitting in on contract negotiations and voicing concerns that fellow employees have on wages or working conditions. Once you have worked with the union for several years, you can seek a job within the union itself. Jobs may include both administrative and management positions within the organization.