NATIONAL LABOR RELATIONS ACT: A major labor union promoting act under New Deal program of the Roosevelt administration in 1935, it modified and replaced the National Industrial Recovery Act that was declared unconstitutional earlier in the year. Also known as the Wagner Act and frequently going by the acronym NLRA, it outlawed unfair labor practices by employers, such as the refusal by a firm to negotiate with a union representing a majority of its employees. It also established the National Labor Relations Board, which oversees labor activities. See also | labor union | National Industrial Recovery Act | collective bargaining | National Labor Relations Board | Norris-LaGuardia Act | open shop | union shop | closed shop | right to work | Taft-Hartley Act |