Labor Union
An organized group of workers in the United States who join together to negotiate wages, benefits, and working conditions with their employer through collective bargaining, protected by the National Labor Relations Act.
What Is a Labor Union?
Key Takeaways
- ✓A labor union is an organization of workers in the United States that bargains collectively with employers over wages, hours, benefits, and working conditions.
- ✓'Labor union' is the American term. In the UK and most other countries, the equivalent organization is called a 'trade union.' The function is identical.
- ✓The NLRA (1935) protects US workers' right to form, join, and assist labor unions. The NLRB enforces the law and oversees union elections.
- ✓Union members earn 23% more than non-union workers doing comparable work, and are 28% more likely to have employer-provided health insurance (Economic Policy Institute, 2023).
- ✓After decades of decline, union organizing activity is rising. The NLRB received 2,510 representation petitions in FY 2023, up significantly from pre-pandemic levels.
A labor union is workers banding together to negotiate as a group instead of as individuals. The concept is straightforward: one employee asking for a raise can be ignored or replaced, but when every employee in the plant makes the same demand, the employer has to listen. In the US, labor unions operate within a specific legal framework. The NLRA gives private-sector workers the right to organize, and the NLRB conducts elections and enforces the rules. Once a union wins a representation election, the employer must recognize it and bargain in good faith. The resulting collective bargaining agreement (CBA) sets the terms for wages, benefits, work rules, grievance procedures, and everything else that defines the employment relationship. The American labor movement looks different from its European counterparts. US unions bargain at the company or plant level, not the industry level. Union membership is voluntary in right-to-work states. And the relationship between labor and management tends to be more adversarial than in countries with codetermination or social partnership models.
Major Labor Unions in the United States
The US labor movement includes national federations, international unions, and independent unions. Here are the largest and most influential.
| Union | Members | Sectors | Affiliation |
|---|---|---|---|
| National Education Association (NEA) | 3.0M | Public education (K-12 and higher ed) | Independent |
| Service Employees International Union (SEIU) | 2.0M | Healthcare, public sector, property services | AFL-CIO |
| American Federation of State, County and Municipal Employees (AFSCME) | 1.4M | State and local government | AFL-CIO |
| International Brotherhood of Teamsters (IBT) | 1.3M | Freight, warehousing, UPS, airlines, food processing | Independent (left AFL-CIO in 2005) |
| United Food and Commercial Workers (UFCW) | 1.2M | Grocery, food processing, retail | AFL-CIO |
| United Auto Workers (UAW) | 400K | Auto manufacturing, higher education, gaming | AFL-CIO (re-affiliated 2022) |
| International Association of Machinists (IAM) | 600K | Aerospace, airlines, manufacturing | AFL-CIO |
How Workers Form or Join a Labor Union
The process of unionizing a workplace follows a defined legal path under the NLRA.
Building support and signing authorization cards
Organizing usually starts when a group of dissatisfied workers contacts a union or when union organizers approach workers at a target employer. The first step is gathering signed authorization cards from at least 30% of the proposed bargaining unit. Most unions won't file for an election until they have 60% to 70% support, since some workers who sign cards change their mind before voting. Organizers hold house meetings, distribute literature, and build a committee of workplace leaders who can talk to coworkers one on one.
Filing a petition and the NLRB election
The union files a representation petition with the NLRB regional office, submitting the authorization cards as proof of interest. The NLRB determines the appropriate bargaining unit (which jobs are included), and schedules a secret-ballot election, typically 2 to 4 weeks later. Campaigns intensify during this period: the union holds rallies and distributes handbills, while the employer may hold captive audience meetings and distribute anti-union materials. On election day, NLRB agents supervise the balloting. A simple majority wins.
Voluntary recognition and card check
Not all union organizing goes through an NLRB election. If the employer agrees, it can voluntarily recognize the union based on a card check, verifying that a majority of workers signed authorization cards. Some employers sign neutrality agreements pledging not to oppose organizing. Card check avoids the 2-to-4-week campaign period where employer opposition can erode support. The Employee Free Choice Act, which would have made card check the default method, passed the House in 2007 but never became law.
Labor Unions from the Employer's Perspective
Employers have legitimate reasons to welcome or resist unionization. Understanding both sides helps HR professionals prepare.
Why some employers resist unions
Unions increase labor costs through higher wages and richer benefits. They reduce management flexibility by requiring that changes to working conditions be negotiated. Seniority-based systems can prevent managers from rewarding top performers. Grievance procedures add administrative burden. Strikes create operational disruption. And the adversarial dynamic of US labor relations can make day-to-day management more difficult. These are real costs, particularly for companies competing in price-sensitive markets.
Why some employers work constructively with unions
Unions provide a structured communication channel between management and the workforce. They reduce turnover by giving workers a voice (exit vs. voice theory). They help enforce safety rules and training standards. They provide a single negotiating counterpart instead of thousands of individual demands. In industries like construction, unions supply trained, certified workers through hiring halls, reducing the employer's recruiting and training costs. The best labor-management relationships create mutual benefit, even if they require compromise on both sides.
The New Wave of Union Organizing (2020-2026)
After decades of decline, union organizing activity has surged, particularly in sectors previously considered un-organizable.
- Amazon: The Amazon Labor Union won a landmark election at the JFK8 warehouse in Staten Island in April 2022. It was the first successful union vote at any Amazon facility in the US. Subsequent elections at other warehouses have had mixed results.
- Starbucks: Since December 2021, over 400 Starbucks stores have voted to unionize with Workers United/SEIU. The rapid, store-by-store campaign became a model for retail organizing. Contract negotiations have been slow and contentious.
- Technology: Workers at Google (Alphabet Workers Union), Apple retail stores, and video game companies have organized. Tech unionization is driven by concerns about layoffs, AI, working conditions, and ethical objections to company projects.
- Media and digital: The NewsGuild-CWA has organized newsrooms at major publications including The New York Times, The Washington Post, and Vice Media. Digital media's instability (layoffs, closures, pivots) accelerated organizing.
- Higher education: Graduate student workers and adjunct faculty have organized at universities across the country, including the University of California system's 48,000-worker strike in 2022, one of the largest strikes in US history.
- Healthcare: Nurses and healthcare workers have organized aggressively since the pandemic, driven by staffing shortages, burnout, and safety concerns. SEIU, National Nurses United, and AFSCME have all grown their healthcare membership.
Labor Union Statistics [2026]
Current data on US labor union membership, earnings, and activity.
Frequently Asked Questions
What's the difference between a labor union and a trade union?
Can my employer fire me for trying to form a union?
Do I have to join a union if my workplace votes to unionize?
How much do labor union dues cost?
Can a union be decertified?
Written by Adithyan RK