Are labor unions good for workers and the economy?

Are Labor Unions Good for Workers and the Economy?

This is a genuinely contested question in economics, with credible research on multiple sides. Here's a balanced look at the evidence:

The Case For Unions

Higher wages and better benefits. The core, most consistent finding across decades of labor economics is that unions raise pay. The union wage premium—the percent change in weekly earnings due to union membership—shows that after controlling for factors such as race, gender, age, occupation, and education, the union wage premium for all workers is 10 percent. The U.S. Treasury Department similarly found that unions raise the wages of their members by 10% to 15%, and they improve fringe benefits and workplace procedures such as retirement plans, workplace grievance policies, and predictable scheduling.

Benefits extend beyond union members. Nonunion workers can gain too. Unionization has spillover effects—competition means workers at nonunionized firms may see increased wages too. Research backs this up: empirical studies tend to support the "threat effect," showing that nonunion wages are higher in highly unionized industries, localities, and firms—if unions threaten to organize low-wage workers, employers may raise wages to preempt organizing.

Reducing inequality. A major economic argument for unions is their equalizing effect on the income distribution. The erosion of collective bargaining has been a major factor depressing wage growth for middle earners and driving wage inequality over the last four decades, as coverage fell from 27.0% in 1979 to just 11.6% in 2019. David Card's influential research found that declining unionization explains 10 to 20 percent of the growth in men's wage inequality from the late 1970s through the late 1980s, and union decline explains nearly a third of the growth in the gap between the median wage and the 90th percentile.

Unions also appear to narrow 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.

Productivity effects. Contrary to a common criticism, much research finds unions don't hurt—and sometimes help—productivity. In the United States, unions generally have a positive impact on productivity, and this effect is particularly strong among manufacturing firms. A broader review found evidence shows that unions actually lead to higher productivity in some sectors, such as education and construction, while making no overall difference on productivity in sectors like manufacturing.

Macroeconomic growth. Some economists argue unions support broader growth by boosting demand and worker income share. By raising wages and reducing income inequality, unions also spur economic growth—research has shown that the decline of unions may have contributed to slower growth and "secular stagnation." The Treasury Department's 2023 report concluded that "a policy of strengthening unions" today could "support broader economic growth."

The Case Against (or Skeptical of) Unions

Costs to profits and possibly jobs. Critics point out real trade-offs. Studies have found that unionization often hurts corporate profitability by forcing companies to share more of their revenues with workers in the form of increased wages and benefits. More skeptical economic research adds that powerful labor unions can bring about slower employment growth and fewer jobs for unionized workers and can reduce company investments in R&D and long-lived tangible capital.

Conservative/free-market critique. Some analysts frame unions as cartels that distort labor markets. Unions function as labor cartels, restricting the number of workers in a company or industry to drive up the remaining workers' wages, and they retard economic growth, delay recovery from recession, and destroy jobs in the companies they organize. (Note: this comes from a think tank with an explicitly free-market perspective and is disputed by many other economists.)

Mixed evidence on overall inequality effects. Not everyone agrees unions are the main driver of falling/rising inequality. One synthesis notes that while declining union density has contributed in part to income inequality, most economists attribute rising income inequality primarily to skill-based technological change, and because of measurement disagreements, the effect of union power on inequality is, at best, mixed.

Union "monopoly power" trade-offs. Some newer research argues that the type of union power matters. Union power does not always benefit workers—while powerful unions with monopolistic characteristics can achieve significant gains at the bargaining table, these victories often come with trade-offs that can negatively impact unionized workers and the economy. This research suggests unions can have more positive long-term impacts in systems that allow increased flexibility in collective bargaining agreements, greater worker choice and representation, and more balanced union demands.

Bottom Line

The mainstream economic consensus—reflected in decades of peer-reviewed labor economics (Card, Freeman, Western, etc.) and recent government analysis—leans toward unions providing net benefits to workers (higher wages, better benefits, reduced inequality, spillover gains to nonunion workers) with modest costs to firm profits and more contested effects on aggregate employment and growth. Free-market-oriented critics counter that these worker gains come at the expense of job creation, investment, and consumers through higher prices. The debate often hinges on how union power is structured (flexible, competitive bargaining vs. rigid, monopolistic models) rather than a simple "unions good/bad" binary.