|Long title||An act to diminish the causes of labor disputes burdening or obstructing interstate and foreign commerce, to create a National Labor Relations Board (NLRB), and for other purposes.|
|Enacted by||the 74th United States Congress|
|Effective||July 6, 1935|
|Statutes at Large||49 Stat. 449|
|Titles amended||29 U.S.C: Labor|
|U.S.C. sections amended||29 U.S.C. § 151-169|
|Labor Management Relations Act of 1947|
Labor Management Reporting and Disclosure Act of 1959
|United States Supreme Court cases|
The National Labor Relations Act of 1935 (also known as the Wagner Act) is a foundational statute of United States labor law that guarantees the right of private sector employees to organize into trade unions, engage in collective bargaining, and take collective action such as strikes. Central to the act was a ban on company unions. The act was written by Senator Robert F. Wagner, passed by the 74th United States Congress, and signed into law by President Franklin D. Roosevelt.
The National Labor Relations Act seeks to correct the "inequality of bargaining power" between employers and employees by promoting collective bargaining between trade unions and employers. The law established the National Labor Relations Board to prosecute violations of labor law and to oversee the process by which employees decide whether to be represented by a labor organization. It also established various rules concerning collective bargaining and defined a series of banned unfair labor practices, including interference with the formation or organization of labor unions by employers. The act does not apply to certain workers, including supervisors, agricultural employees, domestic workers, government employees, and independent contractors.
The NLRA was strongly opposed by conservatives and members of the Republican Party, but it was upheld in the Supreme Court case of NLRB v. Jones & Laughlin Steel Corp. The 1947 Taft-Hartley Act amended the NLRA, establishing a series of labor practices for unions and granting states the power to pass right-to-work laws.
The act's origins may be traced to the bloody Colorado Fuel and Iron Strike of 1914. Colorado Fuel was a subsidiary of Standard Oil, and John D. Rockefeller, Jr. sought expert advice from the new field of public relations to prolong the settlement of the strike. He also recruited the former Canadian Labour Secretary (and future Prime Minister) MacKenzie King to the Rockefeller Foundation to broker a solution to the prolonged strike. The settlement resulted in the establishment of a Management-Labor conciliation board, which evolved into a company union and template for settling labor disputes. Although a step forward in labor relations, the company union was effectively a public relations ploy that had the opposite impact of thwarting the organization of trade unions in the great organizing drives of the period.
Under section 1 (29 U.S.C. § 151) of the Act, the key principles and policy findings on which the Act was based are explained. The Act aims to correct the "inequality of bargaining power between employees who, according to the Act's proponents, do not possess full freedom of association or actual liberty of contract and employers who are organized in the corporate or other forms of ownership association". To achieve this, the central idea is the promotion of collective bargaining between independent trade unions, on behalf of the workforce, and the employer.
encouraging the practice and procedure of collective bargaining and by protecting the exercise by workers of full freedom of association, self-organization, and designation of representatives of their own choosing, for the purpose of negotiating the terms and conditions of their employment or other mutual aid or protection.
Various definitions are explained in section 2, (29 U.S.C. § 152) including 2(5) defining "labor organization" and 2(9) defining "labor dispute". The Act aims to protect employees as a group, and so is not based on a formal or legal relationship between an employer and employee.
The National Labor Relations Board (NLRB), which was established in NLRA 1935 sections 3 to 6 (29 U.S.C. § 153-156), is the primary enforcer of the Act. Employees and unions may act themselves in support of their rights, however because of collective action problems and the costs of litigation, the National Labor Relations Board is designed to assist and bear some of the costs. Under section 3, (29 U.S.C. § 153) the NLRB has two basic functions: overseeing the process by which employees decide whether to be represented by a labor organization and prosecuting violations. Those processes are initiated in the regional offices of the NLRB. The General Counsel of the National Labor Relations Board give legal advice. Sections 4 (29 U.S.C. § 154) and 5 (29 U.S.C. § 155) set out provisions on the officers of the Board and their expenses. Section 6 (29 U.S.C. § 156) empowers the Board to issue rules interpreting the labor legislation. This will generally be binding, unless a court deems it to have acted outside its authority.
Under section 10 (29 U.S.C. § 160) the NLRB is empowered to prevent unfair labor practices, which may ultimately be reviewed by the courts. Under section 11 it can lead investigations, collect evidence, issue subpoenas, and require witnesses to give evidence. Under section 12 (29 U.S.C. § 162) it is an offense for people to unduly interfere with the Board's conduct.
In practice, the act was often ignored when it suited political powers, most notably by Walt Disney in 1940 who formed a company union in violation of the law in order to prevent the Cartoon Unionists Guild, a Trade Union, from gaining a foothold in Disney Studios. 
Employees shall have the right to self-organization, to form, join, or assist labor organizations, to bargain collectively through representatives of their own choosing, and to engage in other concerted activities for the purpose of collective bargaining or other mutual aid or protection, and shall also have the right to refrain from any or all of such activities except to the extent that such right may be affected by an agreement requiring membership in a labor organization as a condition of employment as authorized in section 8(a)(3).
Specific rules in support of collective bargaining are as follows.
National Labor Relations Act of 1935 §7
Under section 8 (29 U.S.C. § 158) the law defines a set of prohibited actions by employers, employees, and unions, known as an unfair labor practice. The first five unfair labor practices aimed at employers are in section 8(a). These are,
In addition, added by the Taft-Hartley Act, there are seven unfair labor practices aimed at unions and employees.
The NLRA 1935 does not cover two main groups of employees: those working for the government and in the railway or airline industries. Section 2(2) (29 USC §152(2)) states that the Act does not apply to employees of the "United States or any wholly owned Government corporation, or any Federal Reserve Bank, or any State or political subdivision thereof, or any person subject to the Railway Labor Act". Under section 19 (29 U.S.C. § 169), people who have religious convictions against joining a trade union are entitled to not associate or financially support it.
The NLRA 1935 also does not include additional measures to protect the rights of racial minorities in the workplace. At the time, unions like the American Federation of Labor did not grant membership to black laborers while other unions like the CIO engaged in internal discrimination, providing more preferable jobs and seniority to its white members. Employers also engaged in discrimination against black union members by restricting their ability to organize and collectively barging with white laborers. The NAACP urged Senator Robert Wagner to add a non-discrimination provision to the bill to protect against union and employee race discrimination. Despite pushes from the NAACP and National Urban League to correct discriminatory practices, the law was written without the inclusion of an anti-discrimination clause.
The act also excludes independent contractors, domestic workers, and farm workers. In recent years, advocacy organizations like the National Domestic Workers' Alliance have worked on the state level to pass a Domestic Workers' Bill of Rights, to extend to domestic workers the protections granted under the NLRA. Similar advocacy efforts are taking place on behalf of farm workers.
The Social Security Act of 1935 excluded from coverage about half the workers in the American economy. Among the excluded groups were agricultural and domestic workers--a large percentage of whom were African Americans.
The act was bitterly opposed by the Republican Party and business groups. The American Liberty League viewed the act as a threat to freedom and engaged in a campaign of opposition in order to repeal these "socialist" efforts. This included encouraging employers to refuse to comply with the NLRB and supporting the nationwide filing of injunctions to keep the NLRB from functioning. This campaign continued until the NLRA was found constitutional by the Supreme Court in National Labor Relations Board v. Jones & Laughlin Steel Corporation (1937).
Labor groups, while overwhelmingly supportive, expressed a set of reservations. The American Federation of Labor and some employers accused the NLRB of favoring the Congress of Industrial Organizations, particularly when determining whether to hold union elections in plant-wide, or wall-to-wall, units, which the CIO usually sought, or to hold separate elections in separate craft units, which the craft unions in the AFL favored. While the NLRB initially favored plant-wide units, which tacitly favored the CIO's industrial unionism, it retreated to a compromise position several years later under pressure from Congress that allowed craft unions to seek separate representation of smaller groups of workers at the same time that another union was seeking a wall-to-wall unit.
Employers and their allies in Congress also criticized the NLRA for its expansive definition of "employee" and for allowing supervisors and plant guards to form unions, sometimes affiliated with the unions that represented the employees whom they were supposed to supervise or police. Many accused the NLRB of a general pro-union and anti-employer bias, pointing to the Board's controversial decisions in such areas as employer free speech and "mixed motive" cases, in which the NLRB held that an employer violated the Act by using misconduct that ordinarily would not result in termination to fire an employee who was engaged in pro-union activity. In addition, employers campaigned over the years to outlaw a number of union practices such as closed shops, secondary boycotts, jurisdictional strikes, mass picketing, strikes in violation of contractual no-strike clauses, pension and health and welfare plans sponsored by unions and multi-employer bargaining.
Many of these criticisms included provisions that employers and their allies were unable to have included in the NLRA. Others developed in reaction to NLRB decisions. Over all, they wanted the NLRB to be neutral as to bargaining power, but the NLRA's policy section takes a decidedly pro-employee position:
It is declared to be the policy of the United States to eliminate the causes of certain substantial obstructions to the free flow of commerce and to mitigate and eliminate these obstructions when they have occurred by encouraging the practice and procedure of collective bargaining and by protecting the exercise by workers of full freedom of association, self-organization, and designation of representatives of their own choosing, for the purpose of negotiating the terms and conditions of their employment or other mutual aid or protection.
Some of these changes were later achieved in the 1947 amendments.
Opponents of the Wagner Act introduced several hundred bills to amend or repeal the law in the decade after its passage. All of them failed or were vetoed until the passage of the Labor Management Relations Act of 1947, or the Taft-Hartley Act, in 1947.
More recent unsuccessful efforts included attempts in 1978 to permit triple backpay awards and union collective bargaining certification based on signed union authorization cards, a provision that is similar to one of the proposed amendments in the Employee Free Choice Act. Under the NLRA, unions can become the representative based on signed union authorization cards only if the employer voluntarily recognizes the union. If the employer refuses to recognize the union, the union can be certified through a secret-ballot election conducted by the NLRB.
In the last decade, Democrats have sought to narrow the Act's provisions for allowing workers to be hired as independent contractors, thus bringing them under the jurisdiction of the Act. Legislators have introduced a standard for independent contracting termed the "ABC test," after its three criteria A, B and C. 
To be hired as an independent contractor, the worker must:
Independent contractors and employers have objected to B, the limitation on working in the employer's usual business.    Objections are based on the inconveniences and costs of meeting the criterion. For instance, it prevents small venues from hiring performers, even for one-night stands, unless they are hired as employees.  As a result, in the California phase of the campaign, numerous occupations of independent contractors were exempted from the test in California Assembly Bill 5 (2019). 
Along with other factors, the act contributed to tremendous growth of membership in the labor unions, especially in the mass-production sector. The total number of labor union members grew from three million in 1933 to eight million at the end of the 1930s, with the vast majority of union members living outside of the Southern United States.