Are labor unions good for workers and the economy?

Labor Unions: Benefits and Trade-offs

This is a genuinely contested question in economics, with research pointing to real benefits for workers alongside legitimate costs that economists debate. Here's what the evidence shows:

The Case For Unions

Higher wages and benefits. The core, most consistent finding in labor economics is a union wage premium. Unions typically increase wages and other working conditions for their members and often all employees working in firms where collective bargaining applies. There is strong evidence for a union-non-union wage premium, even for individuals working similar jobs, and wages are higher in firms under collective bargaining, even in similar firms in the same industry. A 2024 U.S. Treasury report found that unions raise the wages of their members by 10 to 15 percent compared to unrepresented workers, and also improve fringe benefits and workplace procedures such as retirement plans, workplace grievance policies, and predictable scheduling, which contribute substantially to middle-class financial stability.

Reduced inequality. This is one of the more robust findings. The union wage premium is typically stronger at the lower end of the wage distribution, such that strong unions are associated with lower wage inequality — a result that is more or less undisputed in the literature. Research also finds broader spillovers: looking at individual workers over their lifetimes, nonunion workers saw 3 to 7 percent higher growth in wages when working in regions and industries where unions weakened the least. Cross-country evidence similarly shows that "denser unionization, broader union coverage, greater centralization, and more generous labor rights reduce inequality, lower poverty and pull down top-end managers' pay."

Correlation with broader economic well-being. State-level data compiled by the Economic Policy Institute shows that there is a strong, positive relationship between wage growth for the median worker and changes in unionization — wages grew faster in states where unionization declined less between 1979 and 2024.

The Case For Caution

Employment effects. The most consistent cost identified in the literature is on job growth. The union effect on employment is theoretically more ambiguous, but empirically labelled as "the one constant" among the effects of unions: employment growth is two to four percent lower in firms with union bargaining.

Spillovers to non-union workers can be negative too. A systematic review of 147 top-journal studies found a nuanced picture: unionization is generally associated with higher wages for lower-skilled unionized workers; however, when unionized sectors set higher wages, excess workers shift to nonunionized sectors, increasing the labor supply and lowering wages for lower-skilled nonunion workers.

Effects on firm investment and productivity. The same review notes evidence indicates that firms experiencing reduced investments and lower productivity growth, and that become less profitable over time from excessive labor union demands, will also experience slower growth—especially slower employment growth for unionized workers—and, occasionally, the firms will relocate or close. However, it also found longer-run adjustment: in the long run, firms experienced higher profits, leading to increased competition and entry of more new firms, which has resulted in lower unemployment and the return of wages to their initial levels.

Recent U.S. wage trends are mixed. Federal Reserve data complicates the simple "unions = better raises" narrative in the short run: nominal wage growth for nonunion workers sharply increased starting in late 2020, peaking at 6.0% in Q2 2022, while on average since 2002, wages for union and nonunion workers increased at about the same rate. That said, more recently, after mid-2023, as pandemic disruptions waned, nominal wage growth of union workers increased more rapidly, leading to higher real wage growth.

Context: Union Membership Today

Unions now represent a much smaller share of the U.S. workforce than decades ago. The union membership rate was 10.0 percent in 2025, little changed from the prior year, with the number of wage and salary workers belonging to unions at 14.7 million — down from 20.1 percent and 17.7 million members in 1983. Notably, the union membership rate of public-sector workers (32.9 percent) continued to be more than five times higher than the rate of private-sector workers (5.9 percent).

Bottom Line

The economic consensus is genuinely mixed rather than one-sided:

So the honest answer is: unions are good for their own members' wages and conditions with high confidence, likely beneficial for reducing overall inequality, but have real and debated trade-offs for aggregate employment and firm-level outcomes — it isn't a simple "good" or "bad" for the economy as a whole.