The federal minimum wage has been $7.25 per hour since 2009. Twenty-nine states and the District of Columbia have minimum wages above this floor; many cities have gone further, with Seattle and San Francisco setting local minimums above $17. The policy is popular: polling consistently shows broad public support for minimum wage increases. The economics is contested: whether higher minimums reduce employment, raise incomes, or both depends on the structure of local labor markets, the size of the increase, and which economic model of the labor market applies.
What it is
The minimum wage is a legally mandated price floor on labor: employers cannot pay workers less than the specified hourly rate. In the United States, the Department of Labor enforces the federal minimum under the Fair Labor Standards Act. States and municipalities can set higher minimums; none can legally set lower ones.
A minimum wage is only binding — only has an economic effect — when it is set above the market-clearing wage in the affected market. In markets where wages are already above the minimum, the floor has no direct effect.
The intended effect
The minimum wage is designed to ensure that workers receive wages sufficient to cover basic living costs, reduce poverty among the working poor, and correct for employer wage-setting power (monopsony). The Bureau of Labor Statistics Characteristics of Minimum Wage Workers data shows that minimum wage workers are disproportionately young, part-time, employed in food service and retail, and female — the policy primarily targets these groups.
The tradeoff
In a competitive labor market, a binding minimum wage creates a labor surplus (unemployment): at the above-equilibrium wage, more workers want jobs than employers want to hire. Standard competitive theory predicts employment losses.
In a monopsonistic labor market, a minimum wage can increase both wages and employment: the floor corrects the monopsonist's buyer power, and the net effect depends on the size of the monopsony distortion. Card and Krueger's landmark 1994 study comparing fast-food employment across the New Jersey–Pennsylvania border after a minimum wage increase found no employment loss — evidence consistent with monopsony in those markets.
The Congressional Budget Office's analyses of proposed minimum wage increases typically find modest employment reductions alongside significant income gains for workers who remain employed — the trade-off that makes the policy empirically contested. The 2021 CBO analysis of a $15 federal minimum estimated 1.4 million jobs lost alongside 900,000 workers lifted out of poverty.
How it plays out in practice
Seattle's phased increase to $15 minimum wage (2015–2021) generated substantial research. A study by the University of Washington found meaningful hours reductions for low-wage workers; a competing UC Berkeley study found minimal employment effects with positive wage gains. The Bureau of Labor Statistics local area employment data shows Seattle's low-wage employment has grown since the increases — consistent with a labor market where monopsony or demand effects dominate competitive displacement.
