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The Shimer Puzzle and the Correct Identification of Productivity Shocks

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  • Régis Barnichon

Abstract

Shimer (2005a) claims that the Mortensen-Pissarides search model of unemployment lacks an ampiflication mechanism because it cannot generate the observed business cycle fluctuations in unemployment given labor productivity shocks of plausible magnitude. This paper argues that part of the problem lies with the correct identification of productivity shocks. Because of the endogeneity of measured labor productivity, filtering out the trend component as in Shimer (2005a) may not correctly identify the shocks driving unemployment. Using a New- Keynesian framework with search unemployment, this paper estimates that close to 50% of the Shimer puzzle is due to the misidentification of productivity shocks. In addition, I show that extending the search model with an aggregate demand side remarkably improves the ability of the standard search model to match the moments of key labor market variables.

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Bibliographic Info

Paper provided by Centre for Economic Performance, LSE in its series CEP Discussion Papers with number dp0823.

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Date of creation: Aug 2007
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Handle: RePEc:cep:cepdps:dp0823

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Web page: http://cep.lse.ac.uk/_new/publications/series.asp?prog=CEP

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Keywords: unemployment fluctuations; labor productivity; search and matching model; New-Keynesian model;

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References

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  1. Robert E. Hall, 2005. "Job Loss, Job Finding, and Unemployment in the U.S. Economy Over the Past Fifty Years," NBER Working Papers 11678, National Bureau of Economic Research, Inc.
  2. Dale T. Mortensen & Christopher A. Pissarides, 1993. "Job Creation and Job Destruction in the Theory of Unemployment," CEP Discussion Papers dp0110, Centre for Economic Performance, LSE.
  3. Christopher A. Pissarides, 2007. "The Unemployment Volatility Puzzle: Is Wage Stickiness the Answer?," CEP Discussion Papers dp0839, Centre for Economic Performance, LSE.
  4. Regis Barnichon, 2008. "Productivity, aggregate demand and unemployment fluctuations," Finance and Economics Discussion Series 2008-47, Board of Governors of the Federal Reserve System (U.S.).
  5. Dale T. Mortensen, 2005. "More on Unemployment and Vacancy Fluctuations," 2005 Meeting Papers 326, Society for Economic Dynamics.
  6. Hagedorn, Marcus & Manovskii, Iourii, 2008. "The cyclical behavior of equilibrium unemployment and vacancies revisited," Working Paper Series 0853, European Central Bank.
  7. Shigeru Fugita & Garey Ramey, 2006. "Job matching and propagation," Working Papers 06-13, Federal Reserve Bank of Philadelphia.
  8. Robert E. Hall, 2005. "Employment Fluctuations with Equilibrium Wage Stickiness," American Economic Review, American Economic Association, vol. 95(1), pages 50-65, March.
  9. Robert Shimer, 2005. "The cyclicality of hires, separations, and job-to-job transitions," Review, Federal Reserve Bank of St. Louis, issue Jul, pages 493-508.
  10. Robert Shimer, 2005. "The Cyclical Behavior of Equilibrium Unemployment and Vacancies," American Economic Review, American Economic Association, vol. 95(1), pages 25-49, March.
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Cited by:
  1. Guerrazzi Marco, 2012. "Expectations, Employment and Prices: A Suggested Interpretation of the New «Farmerian» Economics," Politica economica, Società editrice il Mulino, issue 3, pages 369.
  2. Marianna Riggi, 2010. "Nominal And Real Wage Rigidities In New Keynesian Models: A Critical Survey," Journal of Economic Surveys, Wiley Blackwell, vol. 24(3), pages 539-572, 07.
  3. Almut Balleer, 2009. "New Evidence, Old Puzzles: Technology Shocks and Labor Market Dynamics," Kiel Working Papers 1500, Kiel Institute for the World Economy.
  4. Marco Guerrazzi, 2011. "Search And Stochastic Dynamics In The Old Keynesian Economics: A Rationale For The Shimer Puzzle," Metroeconomica, Wiley Blackwell, vol. 62(4), pages 561-586, November.
  5. Carl Walsh & Federico Ravenna, 2007. "Vacancies, Unemployment, and the Phillips Curve," 2007 Meeting Papers 1014, Society for Economic Dynamics.
  6. Federico Ravenna & Carl E. Walsh, 2009. "The welfare consequences of monetary policy," Working Paper Series 2009-12, Federal Reserve Bank of San Francisco.

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