I'll examine whether unions help workers and strengthen the broader economy.
Labor unions have both benefits and costs for workers and for the broader economy, and research finds that the effects depend on how unions are structured and how aggressive their bargaining is.
1. Benefits for Workers
Most economic research finds union members earn more and receive better benefits than comparable non-union workers through collective bargaining:
•Higher wages and more comprehensive benefits are attributed to collective bargaining power. Through unions, workers win better wages, benefits and a voice on the job
•Estimates of the wage premium vary by study and period:
•Unions raise the wages of their members by 10 to 15 percent and also improve fringe benefits and workplace procedures such as retirement plans, workplace grievance policies, and predictable scheduling
•The U.S. Treasury in 2023 found unionized workers earn up to 15% more pay than nonunion workers
•Unionized workers earn 10.2% more than their non-union peers
•Researchers found labor unions raise average wages by 8% nationally
•For service sector workers, unionization raises wages by over 10% – about $2.00 per hour
•Bureau of Labor Statistics data in 2022 showed median weekly earnings of unionized workers $1,169 compared to $975 for non-union workers
•Over the last eight decades, unions have consistently provided workers with a 10- to 20-percent wage boost
•Better benefits and working conditions:
•Almost 20% more unionized workers have benefits like drug, vision and dental plans than non-union workers and approximately 48% more have a pension plan
•Data from the Bureau of Labor Statistics show that 85 percent of unionized workers have access to paid sick leave, while only 62 percent of non-union workers have access
•Workers represented by unions get higher wages, and are also more likely to enjoy benefits like paid sick days, paid holidays, and paid vacation
•Historically, labor unions were effective at leveraging collective bargaining to achieve higher wages, improved benefits, and better working conditions
•Main benefits are described as increase wages, benefits, better career options, improved working conditions and job security
•Reduced inequality:
•Unionization increases wages by 17.3% for Black workers and 23.1% for Latino workers, and a similar Joint Economic Committee finding that unionization increases wages by 17.3% for Black and 23.1% for Latino workers
•Unions serve to reduce race and gender wage gaps by encouraging egalitarian wage practices
•Unions provide transparency and other guardrails that help protect workers from employer discrimination, and deliver larger wage gains for lower-wage jobs
•Spillover effects to non-members:
•Competition means workers at nonunionized firms see increased wages too
•Unionization boosts wages for workers industry-wide, even if their workplaces are not unionized
•Historical role: Union efforts helped enact laws to end child labor, create Social Security/Medicare, establish the eight hour work day, the 40 hour week and paid overtime, win unemployment and workers' comp benefits.
2. Potential Benefits for the Economy
The U.S. Treasury's 2023 first-of-its-kind report concluded unions could contribute to reversing the stark increase in inequality and promoting economy-wide growth, and even increase worker productivity.
Specific channels cited:
•Reducing inequality supports growth: Income inequality often feeds back into inequality of opportunity, which impedes growth if disadvantaged people cannot access the resources necessary to acquire job skills or start businesses.
•Productivity: Unions can boost businesses’ productivity by improving working environments and by giving experienced workers more of an input into decisions that design better and more cost-effective workplace procedures
•Unions contribute to more robust economic growth and resilience and contribute to a firm’s productivity by increasing workers’ voice and connection to their jobs
•Civic spillovers: Union members improve their communities through heightened civic engagement; they are more likely to vote, donate to charity, and participate in a neighborhood project, and the higher pay and job security can spill over to families and communities through more stable housing and more investment in education
•Correcting power imbalances: Unions can help to correct power imbalances between workers and employers, leading to a more equitable distribution of profits and improved working conditions
•When unions were at their strongest before the 1960s, they helped narrow the gulf between worker and executive pay and lobbied for higher minimum wages and better access to health care
3. Costs and Downsides
Researchers also document negative economic consequences, especially when unions act as a monopoly bargaining agent making aggressive, inflexible demands:
•For businesses and the economy:
•Unions in competitive markets can cause higher labor costs, reduced profitability, market rigidity, disruptions from strikes, and decreased innovation and productivity
•Trade unions may also lead to higher labor costs for businesses, potentially making them less competitive in the global market, and possibility of strikes and labor disputes that can disrupt business operations
•Some managers and studies conclude unions may be responsible for a slower work process and reduced productivity
•Research associates unions with lower profitability and lower productivity by union work, increased investment loss and decreased capital
•Studies find that union membership has negative economic effects on real GDP, jobs, and wages and that powerful unions can bring about slower employment growth and fewer jobs for unionized workers
•Companies facing excessive union demands often cut investments—particularly in R&D and long-term capital—reducing productivity and profitability
•Employment and firm viability:
•Although U.S. unions have historically secured short-run pay gains, these victories often come at the expense of slower employment growth, fewer future job opportunities, reduced investment and productivity
•Powerful labor unions acting through their monopoly face can limit job growth and employment opportunities and excessive demands have led companies to cut investments thereby reducing productivity, profitability, and long-term viability
•These firms have been more likely to downsize or shut down
•Inherent argument is that excessive union demands have forced companies to reduce investments, including in R&D, leading to lower long-term profits and contributing to long-term decline and fewer jobs
•Case study: As union power and frequent strikes drove up labor costs and reduced productivity, many firms responded by downsizing or relocating, with the Rust Belt illustrating how unions wielding monopoly privileges were responsible for 55 percent of the decline in the Rust Belt’s share of US manufacturing employment between 1950 and 2000. Academic synthesis concludes the economic rise and fall of the Rust Belt serves as a cautionary tale where powerful unions strangled productivity and investment
•Other criticisms:
•Higher wages can lower hours employers demand, limit growth in labor supply, restrict non-union workers from depressing the wage rate, and create walkouts or strikes that shut down production
•Unions only consider needs of members; they often ignore plight of those excluded from the labour market, e.g. the unemployed
•If unions go on strike and work unproductively it can lead to lost sales and output
•Many unions have been marred with issues such as corruption, inadequate personal autonomy for workers, high membership fees, and political participation. Downsides include decline in competitive advantage, corruption, potential decrease in productivity, possible reduction in employee motivation, and increased inefficiencies
•Powerful unions can reduce labor turnover and mobility through job security clauses and seniority promotions, which help insiders but harm outsiders (younger or new workers) by discouraging hiring
•Narrowing wage premium: Recent studies suggest the wage advantage has declined or disappeared due to global competition and technological changes and the union wage premium has diminished to where union membership may no longer guarantee higher earnings. Some evidence suggests declining union power has contributed in part to income inequality, although most economists attribute rising inequality to skill-based technological change
4. Why Structure Matters
A large review of 147 studies finds the key is not whether worker voice exists but the legal structure:
> When the monopoly face dominates and delivers seemingly “big wins” at the bargaining table, companies respond to wage pressure by trimming R&D, cutting capital, reducing company growth, and ultimately shrinking jobs
U.S. labor laws create more powerful and adversarial unions with monopolistic characteristics compared to Germany and the UK, where unions tend to be more cooperative and balanced. Systems permitting multiple forms of representation, voluntary unions, and flexible agreements retain benefits of worker voice without high costs. Moderate union power, characterized by balanced demands, greater worker representation, and increased flexibility, can better preserve benefits while avoiding downsides. The review concludes explicitly that labor union power is not synonymous with being pro-worker.
Bottom Line
•For workers: Unions generally improve pay, benefits, job security, safety, and grievance procedures, and reduce racial/gender pay gaps, with spillover gains even for non-union workers in the same industry. Trade-offs include dues, less individual bargaining autonomy, seniority-based insider advantages, and risk of job losses if employers cut investment or relocate.
•For the economy: Potential economy-wide benefits include lower inequality, higher consumer spending from higher wages, and modest productivity gains from better workplace cooperation and lower turnover. Potential costs include higher labor costs, reduced investment and profitability, less flexibility, strike-related disruptions, and slower employment growth — effects most pronounced when unions pursue aggressive, monopoly-style bargaining.
Public support for unions is at a 57-year high at 70 percent even as density has fallen to a record low of 9.9 percent in 2024 and in earlier data about 35 percent in 1965 falling to 20.1 percent in 1983, reflecting that many workers see the short-run gains while economists debate long-run net effects.