Are labor unions good for workers and the economy?

Are Labor Unions Good for Workers and the Economy?

This is genuinely debated among economists, with different research traditions emphasizing different effects. Here's a balanced look at the evidence:

Effects on Workers

Higher wages. The "union wage premium" is well documented. While simple comparisons of the wages of union workers and nonunion workers find that union workers typically make about 20 percent more than nonunion workers, economists turn to other types of analysis to capture causal effects of unions on wages. After controlling for confounding factors like skill and selection effects, the evidence from these two approaches points to a union wage premium of around 10 to 15 percent, with larger effects for longer-tenured workers.

More recent BLS data show a similar gap: Among full-time wage and salary workers, union members had median usual weekly earnings of $1,404 in 2025, while nonunion workers had median usual weekly earnings of $1,174.

Some conservative-leaning analyses argue the "true" causal effect is smaller than raw comparisons suggest, since over three-fifths of the higher wages earned by union members came from having more valuable skills, not from union membership itself—much like the land surrounding Silicon Valley does not itself raise wages. Once skill differences are accounted for, some estimates put the pure union effect at 0 percent and 10 percent, depending on the circumstances of the particular companies and workers.

Reducing inequality. There's strong consensus here. There is consensus that unions reduce economy-wide wage and income inequality—de-unionization from 1973 to 2007 explains 20% to 33% of rising wage inequality in the US. Unions tend to compress the wage distribution: the effect is positive for workers with lower levels of observed skills (35 percent for workers in the lowest quintile) and negative for workers with the highest levels of observed skills (-10 percent for workers in the upper quintile).

Closing demographic gaps. Empirical studies have confirmed that unions have closed race and gender gaps within firms—one study finds the wage gap between Black and white women was significantly reduced due to union measures, and another finds collective bargaining has reduced gender wage gaps amongst teachers.

Spillover benefits to non-union workers. Each 1 percentage point increase in private-sector union membership rates translates to about a 0.3 percent increase in nonunion wages. States with higher unionization also show broader benefits: the 17 U.S. states with the highest union densities have state minimum wages that are on average 19% higher than the national average and 40% higher than those in low-union-density states, and median annual incomes $6,000 higher than the national average.

Effects on the Economy and Firms

Profits and investment. The tradeoff argument centers here: critics note that union gains can come at employers' expense. Unions may raise wages at the cost of lower profits and fewer jobs, and lower profits can cause businesses to invest less—with unions having a smaller effect in competitive markets where they cannot obtain a monopoly. Research suggests this mostly applies in specific circumstances: union wage gains tend to come from redistributing abnormal profits that firms earn from competitive advantages—like limited foreign competition or growing demand—as well as profits from R&D and long-lasting capital investments, rather than simply shrinking normal competitive profits across the board.

Resilience in downturns. Unionized workers appear better protected during bad times: union workers remain better able than non-union workers to resist employer efforts to reduce wages when market conditions are unfavorable.

Corporate governance effects. Some recent research finds unionization is associated with less aggressive earnings management by firms—firms that narrowly pass the 50% unionization threshold show a significant decrease in real earnings management, relative to peers that narrowly fail—suggesting unions may push firms toward more conservative, transparent financial practices rather than short-term profit manipulation.

Broader economic/civic effects. Beyond wages, pro-union researchers point to wider community effects: study after study has shown that unions make the economy and democracy stronger by boosting wages for workers, reducing wage inequality, increasing voter turnout for union and nonunion voters alike, and providing a counterbalance to wealthy interest groups.

Where We Stand Today

Union membership has declined dramatically over decades. The union membership rate was 9.9 percent in 2024, little changed from the prior year; in 1983, the first year for which comparable data are available, the rate was 20.1 percent. It ticked up slightly in 2025: the union membership rate was 10.0 percent in 2025, little changed from the prior year, while the private sector rate (5.9 percent across all industries) was unchanged. Public-sector unionization remains far higher than private: the union membership rate of public-sector (government) workers, 32.9 percent in 2025, continued to be more than five times higher than the rate of private-sector workers.

Bottom Line

There's broad empirical agreement that unions raise wages for their members (with estimates ranging roughly 10–25% depending on methodology) and reduce wage inequality, particularly benefiting lower-skilled workers. Where disagreement persists is over magnitude (how much is causal vs. selection) and economy-wide tradeoffs—whether wage gains come from firms' excess profits (relatively costless to the broader economy) or meaningfully reduce investment, competitiveness, and job creation. The honest answer is: unions generally help their members and reduce inequality, but the net effect on overall economic growth and efficiency is more contested and likely depends on industry, market structure, and the specific context.