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Search Frictions, Real Rigidities and Inflation Dynamics

  • Carlos Thomas

The standard New Keynesian model suffers from the so-called .macro-micro pricing conflict: in order to match the dynamics of inflation implied by macroeconomic data, the model needs to assume an average duration of price contracts which is much longer than what is observed in micro data. Here I show how departing from the standard model's assumption of a perfectly competitive labor market can help resolve the pricing conflict. I do so by assuming search frictions in the labor market. In this framework, labor becomes firm-specific and marginal cost curves become upward-sloping. This mechanism reduces the slope of the New Keynesian Phillips curve given a frequency of price adjustment. Conversely, given an estimate of this slope, my model implies shorter price durations than the standard model. For a plausible calibration and for different slope values, my model consistently delivers price durations that are roughly half of those implied by the standard model.

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Paper provided by Centre for Economic Performance, LSE in its series CEP Discussion Papers with number dp0822.

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Date of creation: Aug 2007
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Handle: RePEc:cep:cepdps:dp0822
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  9. Lawrence J. Christiano & Martin Eichenbaum & Charles L. Evans, 2005. "Nominal Rigidities and the Dynamic Effects of a Shock to Monetary Policy," Journal of Political Economy, University of Chicago Press, vol. 113(1), pages 1-45, February.
  10. Olivier Blanchard & Jordi Gali, 2007. "A New Keynesian Model with Unemployment," Kiel Working Papers 1335, Kiel Institute for the World Economy.
  11. Barbara Petrongolo & Christopher Pissarides, 2000. "Looking into the black box: a survey of the matching function," LSE Research Online Documents on Economics 2122, London School of Economics and Political Science, LSE Library.
  12. Sbordone, Argia M., 2005. "Do expected future marginal costs drive inflation dynamics?," Journal of Monetary Economics, Elsevier, vol. 52(6), pages 1183-1197, September.
  13. Martin Eichenbaum & Jonas D.M. Fisher, 2003. "Evaluating the Calvo model of sticky prices," Working Paper Series WP-03-23, Federal Reserve Bank of Chicago.
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