Suppose the mark-up of goods prices over marginal cost is 8% and that the wage-setting equation is W = P(1 – 2u), where u is the unemployment rate.
(a) Based on the medium-run analysis of the labor market model in Chapter 7, what the natural rate of unemployment? Illustrate the equilibrium with a diagrammatical sketch showing the price-setting and wage-setting curves.
(b) Suppose the mark-up increases to m=10%? How will this affect the medium-run equilibrium? Indicate the new equilibrium in your diagrammatic sketch.