Minimum Wage: Laws, Models, Evidence, Alternatives

Definition and purpose of minimum wage

A minimum wage is the lowest remuneration that employers may legally pay employees, acting as a price floor for labor. Its purpose is to prevent worker exploitation—especially in “sweated trades” where bargaining power was thought to be unfair—and, over time, to support lower-income families by raising the incomes of low-wage workers. Minimum wage policies differ across countries and sometimes within countries (by region, sector, or age group), and they may be set through direct legislation, adjustment formulas tied to economic indicators, or wage boards involving employers, employees, and government. Economically, standard supply-and-demand models predict that a binding minimum wage can reduce employment by pricing out the least productive workers, potentially increasing unemployment. However, alternative models (such as monopsony, where employers have wage-setting power) and labor-market frictions can produce different outcomes—minimum wages may increase labor market efficiency or, if set not too high, boost job-search effort and job-finding rates, potentially reducing unemployment. The real-world effects are debated: supporters emphasize improved living standards, reduced poverty, and lower inequality, while opponents argue that higher labor costs can lead to job losses and may not effectively target poverty because many minimum-wage earners are secondary earners in higher-income households.

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Historical origins and early wage regulation

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