Do minimum wages deliver what they promise? Effects of minimum wage on employment, output, and income inequality from occupational choice theory

Abstract

This paper addresses the unresolved debate on the effects of minimum wages on output, employment, and income inequality by modeling an occupational choice economy calibrated for a representative OECD economy. The minimum wage sets a minimum skill requirement for employees, which reduces the effective labor supply and raises its price. Consequently, salaries increase, business profits fall, and some entrepreneurs transition to solo self-employment. With a minimum-to-average wage ratio of 0.43 (the OECD countries average in 2020), a 10% increase in the minimum wage reduces output, employment, and inequality among employees by 0.2%, 1.0%, and 2.1%, respectively, and increases total income inequality by 0.57%. If the minimum-to-average wage ratio were 0.55, output, employment, and inequality among employees would decrease by 0.87%, 3.55%, and 5.19%, respectively, and income inequality would rise by 2.09%. In summary, the effects are mainly negative, contrary to what is promised, and quantitatively large for high minimum-to-average wage ratios.