The Minimum Wage

The economic consensus that raising the minimum wage destroys jobs collapsed under the weight of the evidence — and what replaced it is more interesting than either side admits.

The short version

The federal minimum wage has been $7.25 per hour since 2009 — the longest period without an increase since the minimum wage was established in 1938; adjusted for inflation, it is worth less today than it was in 1968.
The dominant economic model predicted that minimum wage increases would reduce employment; a landmark 1994 study by Card and Krueger comparing New Jersey and Pennsylvania after a minimum wage increase found no significant job loss, launching two decades of empirical research that has substantially complicated the simple prediction.
The modern empirical consensus is that moderate minimum wage increases — in the range of recent state-level increases — have little to no measurable effect on employment levels, while meaningfully raising incomes for low-wage workers; the debate now centers on how large an increase tips from moderate to disruptive.
Twenty-nine states and Washington D.C. have minimum wages above the federal floor as of 2025, creating a natural laboratory; the states with higher minimums have not shown systematically higher unemployment than low-wage states, a finding that has reshaped the policy debate substantially.

What it is

A minimum wage is a legal floor on hourly compensation — the lowest wage an employer may legally pay a covered employee. The United States established its federal minimum wage under the Fair Labor Standards Act of 1938, which also established the 40-hour workweek and child labor restrictions. The initial federal minimum was $0.25 per hour. Congress has raised it 22 times since then, most recently in 2009, when it reached $7.25. The minimum wage is not indexed to inflation; each increase requires an act of Congress, which means the real (inflation-adjusted) value of the minimum wage fluctuates with both legislative action and price levels. The peak real value of the federal minimum wage was in 1968, when it was equivalent to approximately $12–13 in 2024 dollars — meaning the federal minimum wage today represents roughly a 40–45% cut in real purchasing power from its historical high.

The basic economic model that dominated academic and policy thinking about the minimum wage until the 1990s was drawn from introductory supply-and-demand analysis: if you set a price floor above the market-clearing price, you create a surplus — in this case, a surplus of labor, which is unemployment. The prediction was clean: raise the minimum wage, and employers will hire fewer workers, because the marginal worker who was worth employing at the lower wage becomes unprofitable at the higher one. This model captured something real — there is some wage level high enough to cause significant job loss — but it assumed labor markets behave like commodity markets, where workers and employers are price-takers with no market power on either side. Real labor markets, particularly for low-wage work, often don't fit this model: employers in local markets frequently have monopsony power — the ability to set wages below competitive levels because workers face significant costs to switching jobs — which means a wage floor can increase both wages and employment by correcting the monopsony distortion.

The empirical revolution in minimum wage research began with David Card and Alan Krueger's 1994 study comparing fast-food employment in New Jersey and neighboring Pennsylvania after New Jersey raised its minimum wage from $4.25 to $5.05 in 1992. The standard model predicted New Jersey would see relative job losses; Card and Krueger found instead that fast-food employment grew slightly faster in New Jersey than in Pennsylvania following the increase. The study was immediately controversial — the National Restaurant Association commissioned its own survey that disputed the findings — but Card and Krueger's methodology, using a neighboring state as a control group (a 'difference-in-differences' design), became the template for two decades of subsequent research. Card was awarded the Nobel Prize in Economics in 2021, with the prize committee explicitly citing his minimum wage work as foundational to the credible revolution in empirical economics.

The policy landscape for minimum wages in the United States is now primarily a state and local story. The federal minimum of $7.25 applies to workers in states without higher state minimums, covering approximately 20 states mostly in the South and Midwest. The remaining states have set higher floors: California's was $16 in 2024 ($17 in some cities), Washington's $16.28, New York's $16 in New York City and surrounding counties. Fifteen cities and counties have enacted local minimums above their state floors. This variation has created a genuine natural experiment that researchers have exploited extensively. The Congressional Budget Office's 2021 analysis of a proposed federal increase to $15 estimated it would raise wages for 17 million workers, lift 900,000 people out of poverty, and reduce employment by 1.4 million — a finding that reflects the genuine uncertainty about magnitude rather than direction, and that was contested by other economists who argued the employment effect was overstated.

Why it matters

The gap between the federal minimum wage and the wages required to meet basic living costs has widened substantially over the past five decades, with direct consequences for the working poor. The MIT Living Wage Calculator estimates that a living wage for a single adult in the median U.S. county — covering food, housing, transportation, healthcare, and taxes — is approximately $21–24 per hour in 2024, roughly three times the federal minimum. Workers earning the federal minimum work full-time, year-round for approximately $15,000 annually — below the federal poverty level for a family of two. The federal minimum wage is not a wage anyone can live on in any metropolitan area in the United States; it is functionally a floor that primarily matters where labor markets are so weak that it would otherwise be undercut.

The industries that employ minimum wage workers — retail, food service, home health care, child care — have among the highest rates of wage theft, precarious scheduling, and lack of benefits in the economy. Wage theft — employers paying below minimum wage, stealing tips, requiring off-clock work, or misclassifying employees as contractors to avoid wage and benefit obligations — is pervasive in low-wage industries and is estimated to cost workers more than $50 billion per year. Low-wage work is also concentrated among women, people of color, and immigrants: roughly 60% of minimum wage workers are women, and Black and Hispanic workers are overrepresented relative to their share of the workforce. Minimum wage increases therefore have distributional consequences that interact with racial and gender inequality in the labor market.

The political economy of the minimum wage explains why the federal floor has been allowed to erode in real terms over decades. Employers who pay minimum wages — particularly in industries like fast food and retail — are organized and politically active, fund lobbying against increases, and can cite the job-loss argument (even as its empirical basis weakened) as cover for what is fundamentally an interest in keeping labor costs low. Workers who would benefit from minimum wage increases are diffuse, politically underrepresented, and in many cases employed in industries with low unionization rates and high turnover. The result is a consistent political asymmetry: the costs of the minimum wage are concentrated among organized interests that can mobilize against increases, while the benefits are spread among workers who are harder to organize politically. State and local minimum wage increases have succeeded partly because they can be put directly to voters through ballot initiative — 56% of Florida voters approved a $15 minimum wage in 2020, even as the state voted for Donald Trump.

The unsettled empirical frontier is not whether moderate minimum wage increases cause significant job loss — the evidence on that has converged — but what happens at higher levels and in weaker labor markets. The Seattle Minimum Wage Study, a University of Washington research project tracking Seattle's increase toward $15, produced mixed findings: one paper found significant reductions in hours worked for low-wage workers; another found positive employment effects. The discrepancy turned partly on methodology and data sources. The honest summary of the research literature is that minimum wage increases in the range of recent U.S. state increases — moving from $7–9 to $12–15 — have small and often statistically indistinguishable effects on employment, while producing meaningful wage gains; that very large increases in short time frames, particularly in low-wage regions, carry more risk; and that the labor market is heterogeneous enough that no single national minimum wage level is appropriate for San Francisco and rural Mississippi simultaneously — an argument for state and local variation that the current policy structure partially accommodates.

The Minimum Wage

The short version

What it is

Why it matters

Sources & Further Reading