In 1935 the National Labor Relations Act was enacted to ensure private sector employees' rights to organize and collectively bargain with their employers. To administer the act, Congress created an independent government agency, the National Labor Relations Board (NLRB). The NLRB assures that a group of employees seeking collective bargaining are able to do so, typically by holding elections for labor union representation, and to prevent or remedy unfair labor practices. The five person board and the General Counsel, which make up the NLRB, are all chosen by the President of the United States and confirmed by the Senate.
From the description of Records of United Electrical, Radio and Machine Workers of America National Labor Relations Board cases, 1936-1999. (University of Pittsburgh). WorldCat record id: 56351120