This paper provides a critique of the "unemployment invariance hypothesis", according to which the behavior of the … labor market ensures that the long-run unemployment rate is independent of the size of the capital stock, productivity, and … equilibrating mechanisms to ensure unemployment invariance and that other markets may perform part of the equilibrating process as …

money growth leads to higher inflation and higher unemployment, so the long-run Phillips curve is not vertical. The optimal … monetary growth rate decreases with the workers' bargaining power, the level of unemployment benefits and the payroll tax rate …. -- inflation ; unemployment ; search-matching ; Friedman rule …

empirical regularities that the conventional matching model cannot. -- Matching ; incentives ; adjustment costs ; unemployment …

suggest that a more progressive tax schedule reduces the unemployment rate and increases the employment rate. These findings …