Standard macroeconomic models underpredict the volatility of unemployment fluctuations. A common solution is to assume … jobs. This form of wage rigidity does not affect job creation and thus cannot explain the unemployment volatility puzzle …

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 …

predictions of the model change very little, but the welfare costs of unemployment are much larger because unemployment risk is … distributed unequally across workers. As a result, optimal unemployment insurance may be higher and welfare is lower if hiring is … selective. -- labor market models ; welfare ; optimal unemployment insurance …

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