ABSTRACT
Union Structure and Membership Labor unions are organizations of workers whose primary objectives are to improve the pecuniary and nonpecuniary conditions of employment among their members. Unions can be classified into two types: an industrial union represents most or all of the workers in an industry or firm regardless of their occupations, and a craft union represents workers in a single occupational group. Examples of industrial unions are the unions representing automobile workers, bituminous coal miners, and rubber workers; craft unions include those representing the various building trades, printers, and dockworkers.
