As of 2025, union membership among American workers remains low, with fewer than 10 percent of all civilian workers and less than 6 percent of private-sector employees belonging to labor unions. Despite this decline from its mid-20th century peak, organized labor continues to play a significant role in the progressive movement and within the Democratic Party.
Union density reached its highest point in the 1950s when about one in three civilian nonfarm workers were union members. Since then, union representation has steadily declined. In 1979, total union membership was estimated at around 21 million out of 87 million employed workers. By 2024, that number had dropped to about 14 million out of more than 125 million total workers.
The National Labor Relations Act (Wagner Act), passed during Franklin D. Roosevelt’s administration, created a formal structure for union organizing and led to a surge in union power and membership. However, by the 1970s, changes in the economy and increased competition reduced unions’ ability to secure benefits for their members, resulting in ongoing declines in membership despite growth among government-worker unions.
Efforts by organized labor to reverse these trends have included attempts to make it easier for unions to organize workers without secret ballots—a practice known as “card check.” The Employee Free Choice Act sought to implement this but failed due to lack of support. More recently, labor leaders have backed the Protecting the Right to Organize (PRO) Act, which would override state-level right-to-work laws and restrict independent contractor status for some workers.
Some political figures have also proposed sectoral bargaining—common in Europe—which would require entire sectors of workers to bargain collectively through unions.
Conservative lawmakers have emphasized voluntarism as a key principle: “Workers should not be prohibited from joining unions, but they must not be forced to join, pay dues, or participate in union activities.” They argue that compelling individuals into union membership is unfair and can force them into supporting organizations that may not represent their interests.
American unions have faced corruption issues over time. Cases range from legal salary padding (“double-jobbing”) to embezzlement and ties with organized crime. While infiltration by criminal syndicates has decreased since the decline of groups like the Five Families, instances such as two United Auto Workers presidents being sent to prison for embezzlement illustrate ongoing challenges.
Unions are granted unique powers by government legislation—including compelling forms of membership and collecting dues similar to taxes—which sets them apart from most private organizations. As a result, their finances are subject to public scrutiny under laws such as the Taft-Hartley Act and Landrum-Griffin Act.
Labor disputes can affect more than just employers and employees; major strikes after World War II prompted President Harry Truman’s strong response and led Congress to pass laws restricting secondary strikes or boycotts—actions targeting businesses other than an employer directly involved in a dispute.
Politically, organized labor has long been aligned with left-wing causes—from early alliances with socialists and communists through support for New Deal Democrats up through present-day involvement with progressive movements such as Black Lives Matter and advocacy on issues including transgender rights.
Attempts by conservatives hoping that policy disagreements might split unions from broader leftist coalitions have generally failed. Today’s union members include many government employees who often support progressive policies across various issues.
Government-worker unions now account for roughly half of all union members. These groups often negotiate with elected officials they help elect—a dynamic highlighted by recent negotiations between Chicago Teachers Union representatives and city officials previously affiliated with the CTU itself. Government-worker unions wield considerable influence over local politics—especially in states like California—and played a prominent role during debates over school reopening amid COVID-19 disruptions.
While Supreme Court decisions such as Janus v. AFSCME established right-to-work principles for government employment, critics argue these measures do not fully address concerns about public accountability or potential abuses of power by public-sector unions.
The history of organized labor remains important both politically and culturally. While liberal states often incorporate pro-union perspectives into school curricula developed by labor organizations themselves, some observers warn that ignoring this history could leave policymakers unprepared or misinformed about current debates over workplace organization.
A notable figure is former Teamsters boss James Riddle Hoffa whose leadership—backed by organized crime—exposed serious problems within American-style unionism. His legacy continues as both a cautionary tale and a source of pride among some contemporary union supporters.
