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| CIO (United States) | |
|---|---|
| Name | Congress of Industrial Organizations |
| Founded | 1935 |
| Dissolved | 1955 |
| Predecessor | American Federation of Labor |
| Successor | AFL–CIO |
| Headquarters | Washington, D.C. |
| Key people | John L. Lewis, Philip Murray, Walter Reuther, Sidney Hillman, David Dubinsky |
| Membership | 4,000,000 (1945) |
| Country | United States |
CIO (United States) was a federation of industrial trade unions active from 1935 to 1955 that organized workers in mass-production industries and transformed American labor movement politics and collective bargaining. It emerged from factions within the American Federation of Labor and allied with leaders from unions such as the United Auto Workers, United Steelworkers, International Brotherhood of Teamsters, and Amalgamated Clothing Workers of America to campaign for industrial unionism, social reform, and wartime labor stabilization. The CIO left a lasting imprint on labor law, labor politics, and postwar labor institutions through campaigns, strikes, and legislative advocacy.
The CIO originated in disputes within the American Federation of Labor during the mid-1930s, notably involving figures like John L. Lewis of the United Mine Workers of America and organizers from the Steel Workers Organizing Committee and the Committee for Industrial Organization. Key early events included the 1936–1937 sit-down strikes in Flint, Michigan involving the United Auto Workers and the 1937 strike actions at Republic Steel and Crosley Radio plants. The CIO was formally established in 1935 and grew rapidly during the Great Depression, the passage of the National Labor Relations Act (Wagner Act), and the mobilization for World War II. Under leaders such as Philip Murray and Walter Reuther, the CIO pursued membership growth among workers at General Motors, U.S. Steel, Goodyear Tire and Rubber Company, Westinghouse Electric Corporation, and other industrial employers. Postwar tensions with the House Un-American Activities Committee, the Taft–Hartley Act, and factional disputes involving unions like the International Longshoremen's Association and the Amalgamated Clothing Workers contributed to the 1955 merger with the American Federation of Labor forming the AFL–CIO.
The CIO organized through national unions, industrial councils, and regional offices that mirrored corporate industrial divisions found at firms such as General Motors, Ford Motor Company, Chrysler, and Bethlehem Steel. Its governance featured a congress of delegates, an executive council, and a president—positions held by John L. Lewis, Philip Murray, and others—with staff drawn from the United Auto Workers, International Association of Machinists, United Steelworkers, International Brotherhood of Electrical Workers, and American Postal Workers Union predecessors. The CIO developed departments for organizing, legal affairs, research, and political action, coordinating strikes at facilities owned by DuPont, Bethlehem Steel Corporation, Packard, Kaiser Shipyards, and Northrop Corporation. It also maintained relationships with philanthropic and research institutions such as the Brookings Institution and labor-oriented entities like the Amalgamated Clothing Workers' social service programs.
The CIO's primary functions included organizing unrepresented industrial workers at employers like General Electric, Westinghouse, Baldwin Locomotive Works, and Goodyear, negotiating collective bargaining agreements with companies such as General Motors and U.S. Steel, administering strike funds for actions at Republic Steel and Bethlehem Steel, and representing members before the National Labor Relations Board. It provided legal support in cases involving the Taft–Hartley Act and contested decisions from the Supreme Court of the United States affecting labor rights. The CIO engaged in worker education programs, collaborated with community organizations including the YWCA and United Service Organizations, and sponsored research into industrial production and labor standards alongside academics from institutions like Columbia University and University of Michigan.
The CIO reshaped alignments within the broader labor movement by advocating industrial unionism against craft union models championed by the American Federation of Labor. It forged political alliances with the New Deal coalition, supported candidates such as Franklin D. Roosevelt and later Harry S. Truman, and mobilized electoral blocs in states like Pennsylvania, Ohio, Michigan, Illinois, and New York. The CIO interacted with political organizations including the Democratic Party, the Progressive Party (United States, 1948), and national policymakers such as Samuel Gompers successors and Congressional leaders who shaped the Wagner Act and Taft–Hartley Act. Internally, the CIO negotiated ideological tensions involving communist-aligned members tied to groups like the Communist Party USA and anti-communist leaders such as Walter Reuther.
Major CIO campaigns included the 1936–1937 auto industry drive culminating in contracts with General Motors after the Flint sit-down strike, the 1937 steel organizing efforts against firms including Bethlehem Steel and U.S. Steel, wartime no-strike pledges during World War II to support the War Production Board, and postwar strikes against Packard and Republic Steel. The CIO led election mobilizations for Franklin D. Roosevelt in 1936, organized defense housing and wartime labor programs for shipyards like Kaiser Shipyards, and conducted high-profile public relations campaigns involving figures such as Sidney Hillman and Philip Murray. The CIO also ran international labor solidarity initiatives with unions in United Kingdom, Canada, and Mexico and supported postwar reconstruction efforts tied to Marshall Plan politics.
The CIO faced criticism over alleged communist influence within some locals linked to the Communist Party USA, leading to purges and internal disputes that intensified after investigations by the House Un-American Activities Committee and public concerns during the McCarthyism era. Labor leaders such as Walter Reuther clashed with figures like John L. Lewis over strategies and affiliations; controversies erupted over corruption allegations in unions like the International Brotherhood of Teamsters and jurisdictional conflicts with the American Federation of Labor. The CIO was criticized by corporate executives at General Motors and U.S. Steel for strike tactics, and by conservative lawmakers for labor's political activism, especially surrounding the 1948 Progressive Party (United States, 1948) campaign and debates over the Taft–Hartley Act provisions.
The CIO's legacy includes the institutionalization of industrial unionism through the United Auto Workers, United Steelworkers of America, International Brotherhood of Electrical Workers, and other merged unions that later formed the AFL–CIO. Its organizing methods influenced public sector labor actions at entities like the United States Postal Service and contemporary unions such as the Service Employees International Union and Teamsters. CIO-era precedents shaped labor law interpretations by the National Labor Relations Board and jurisprudence of the Supreme Court of the United States, while its political mobilization models informed labor involvement in later elections of leaders like John F. Kennedy and Lyndon B. Johnson. Institutional descendants preserve CIO innovations in collective bargaining, community-labor coalitions, and union education programs, impacting labor relations at corporations including General Motors, Ford Motor Company, Amazon (company), and Walmart in varying ways.
Category:History of United States labor unions Category:Trade unions disestablished in 1955