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A new Keynesian model with unemployment

  • Olivier Blanchard

    (MIT
    NBER)

  • Jordi Gali

    (Barcelona, Universitat Pompeu Fabra (UPF), Centre de Recerca en Economia Internacional (CREI)
    CEPR
    NBER)

We develop a utility based model of fluctuations, with nominal rigidities, and unemployment. In doing so, we combine two strands of research: the New Keynesian model with its focus on nominal rigidities, and the Diamond-Mortensen-Pissarides model, with its focus on labor market frictions and unemployment. In developing this model, we proceed in two steps. We first leave nominal rigidities aside. We show that, under a standard utility specification, productivity shocks have no effect on unemployment in the constrained efficient allocation. We then focus on the implications of alternative real wage setting mechanisms for fluctuations in unemployment. We then introduce nominal rigidities in the form of staggered price setting by firms. We derive the relation between inflation and unemployment and discuss how it is influenced by the presence of real wage rigidities. We show the nature of the tradeoff between inflation and unemployment stabilization, and we draw the implications for optimal monetary policy

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Paper provided by National Bank of Belgium in its series Working Paper Research with number 92.

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Length: 57 pages
Date of creation: Oct 2006
Date of revision:
Handle: RePEc:nbb:reswpp:200610-4
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  1. Chéron, A. & Langot, François, 1999. "The Phillips and Beveridge curves revisited," CEPREMAP Working Papers (Couverture Orange) 9905, CEPREMAP.
  2. Moyen, S. & Sahuc, J-G., 2004. "Incorporating Labour Market Frictions into an Optimising-Based Monetary Policy Model," Working papers 105, Banque de France.
  3. Krause, M.U. & Lubik, T.A., 2003. "The (Ir)relevance of Real Wage Rigidity in the New Keynesian Model with Search Frictions," Discussion Paper 2003-113, Tilburg University, Center for Economic Research.
  4. Robert Shimer, 2005. "The Cyclical Behavior of Equilibrium Unemployment and Vacancies," American Economic Review, American Economic Association, vol. 95(1), pages 25-49, March.
  5. Antonella Trigari, 2006. "The Role of Search Frictions and Bargaining for Inflation Dynamics," Working Papers 304, IGIER (Innocenzo Gasparini Institute for Economic Research), Bocconi University.
  6. Summers, Lawrence H, 1991. " The Scientific Illusion in Empirical Macroeconomics," Scandinavian Journal of Economics, Wiley Blackwell, vol. 93(2), pages 129-48.
  7. Christoffel, Kai & Linzert, Tobias, 2006. "The role of real wage rigidity and labor market frictions for unemployment and inflation dynamics," Discussion Paper Series 1: Economic Studies 2006,11, Deutsche Bundesbank, Research Centre.
  8. Merz, Monika, 1995. "Search in the labor market and the real business cycle," Journal of Monetary Economics, Elsevier, vol. 36(2), pages 269-300, November.
  9. Antonella Trigari, 2009. "Equilibrium Unemployment, Job Flows, and Inflation Dynamics," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 41(1), pages 1-33, 02.
  10. Rafael Domenech & Javier Andres & Javier Ferri, 2006. "Price Rigidity and the Volatility of Vacancies and Unemployment," Working Papers 0601, International Economics Institute, University of Valencia.
  11. Barro, Robert J, 1988. "The Persistence of Unemployment," American Economic Review, American Economic Association, vol. 78(2), pages 32-37, May.
  12. Robert E. Hall, 2005. "Employment Fluctuations with Equilibrium Wage Stickiness," American Economic Review, American Economic Association, vol. 95(1), pages 50-65, March.
  13. Andolfatto, David, 1996. "Business Cycles and Labor-Market Search," American Economic Review, American Economic Association, vol. 86(1), pages 112-32, March.
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