Not really just one union, they generally exist for different areas of the private sector (American business non-government). Example for Telecommunications: CWA & IBEW or Example for package delivery, moving company & labor: Teamsters. Best way to answer your questions anonymously would be to call NRLB (Nation Relations Labor Board).
National Association of Manufacturers
American Federation of Labor - Congress of Industrial Organizations
The American Federation of Labor (AFL) and the Congress of Industrial Organizations (CIO) joined together to form the American Federation of Labor and Congress of Industrial Organizations (AFL-CIO).
A bunch of labor union leaders and he created the Congress of Industrial Organization. The organization ended up getting very popular and large in size.
Vladimir Lenin nationalized large businesses.
National Association of Manufacturers
National Association of Manufacturers
National Association of Manufactures
National Association of Manufacturers
Specialization of labor is a powerful force in an economy, benefiting small and large businesses alike. Workers produce more when they occupy specialized roles, so businesses can offer higher quality products at lower prices.
Because help is important in a business and businesses could close down if there is no help even large company's.
The American Federation of Labor (AFL) & Congress of Industrial Organizations (CIO)
American Federation of Labor - Congress of Industrial Organizations
Large businesses depend on small businesses to have higher prices and force customers to them. In addition, small businesses often order from larger businesses.
Signing of the burlingame treaty
Signing of the burlingame treaty
The American Federation of Labor (AFL) and the Congress of Industrial Organizations (CIO) joined together to form the American Federation of Labor and Congress of Industrial Organizations (AFL-CIO).