Yes
The board oversees union elections and guards against unfair labor practices.
improve conditions in a workplace
The Knights of Labor.
the National Labor Union.
Industrial Workers of the World
Eugene Debs
American Federation of Labor - Congress of Industrial Organizations
Eugene Debs
labor unions and trade union
The Knights of Labor is an example of a type of union that emerged during the nation's industrial boom. Others include the Industrial Workers of the World, and the American Railway Union.
Labor Unions are organized to help labor. There are two types of labor unions, Craft Unions for workers in a certain skill or trade, like masons or carpenters; and Industrial Unions that are made up of all the workers in a particular industry. The Auto Workers Union is an example of an Industrial Union and the AMA is an example of a Craft Union.
Perhaps the most socialist of the labor unions is the Industrial Workers of the World, the IWW.