On Determinacy and Learnability in a New Keynesian Model with Unemployment
We analyze determinacy and stability under learning (E-stability) of rational expectations equilibria in the Blanchard and Galí (2006, 2008) New-Keynesian model of inflation and unemployment, where labor market frictions due to costs of hiring workers play an important role. We derive results for alternative specifications of monetary policy rules and alternative values of hiring costs as a percentage of GDP. Under low hiring costs – a typical part of the U.S. calibration – for policy rules based on current period inflation and unemployment our results are similar to those of Bullard and Mitra (2002). However, we find that the region of indeterminacy and E-instability in the policy space increases with the hiring costs. So, higher hiring costs – consistent with the European 'sclerotic' labor market institutions – seem to play an important part in explaining unemployment instability. Under lagged data based rules the area where monetary policy delivers both determinacy and E-stability shrinks. These rules perform worse according to these two dimensions when hiring costs go up. Finally, under expectations-based rules – unlike Bullard and Mitra (2002) – an additional explosive region is introduced. Here also the scope for determinacy and E-stability oriented monetary policy decreases. Interestingly – under the same rule and European 'sclerotic' labor market institutions – we find that responding too much to expected inflation and too little to expected unemployment may very well be self-defeating. When hiring costs are large, a central bank that follows such a policy rule could very easily end up in the worst-case scenario of both indeterminacy and E-instability
|Date of creation:||Mar 2009|
|Date of revision:|
|Contact details of provider:|| Postal: Kiellinie 66, D-24105 Kiel|
Phone: +49 431 8814-1
Fax: +49 431 85853
Web page: http://www.ifw-kiel.de
More information through EDIRC
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:
- James B. Bullard & Kaushik Mitra, 2002.
"Learning about monetary policy rules,"
2000-001, Federal Reserve Bank of St. Louis.
- Krause, Michael U. & Lubik, Thomas A., 2007.
"The (ir)relevance of real wage rigidity in the New Keynesian model with search frictions,"
Journal of Monetary Economics,
Elsevier, vol. 54(3), pages 706-727, April.
- Thomas Lubik & Michael Krause, 2003. "The (Ir)relevance of Real Wage Rigidity in the New Keynesian Model with Search Frictions," Economics Working Paper Archive 504, The Johns Hopkins University,Department of Economics.
- 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.
- Blanchard, Olivier & Galí, Jordi, 2006.
"A New Keynesian model with unemployment,"
CFS Working Paper Series
2007/08, Center for Financial Studies (CFS).
- Carl Walsh & Federico Ravenna, 2007.
"Vacancies, Unemployment, and the Phillips Curve,"
2007 Meeting Papers
1014, Society for Economic Dynamics.
- Olivier Blanchard & Jordi Gali, 2008.
"Labor Markets and Monetary Policy: A New-Keynesian Model with Unemployment,"
NBER Working Papers
13897, National Bureau of Economic Research, Inc.
- Olivier Blanchard & Jordi Galí, 2010. "Labor Markets and Monetary Policy: A New Keynesian Model with Unemployment," American Economic Journal: Macroeconomics, American Economic Association, vol. 2(2), pages 1-30, April.
- Blanchard, Olivier J & Galí, Jordi, 2008. "Labour Markets and Monetary Policy: A New Keynesian Model with Unemployment," CEPR Discussion Papers 6765, C.E.P.R. Discussion Papers.
- Olivier Blanchard & Jordi Galí, 2006. "Labor markets and monetary policy: A new-Keynesian model with unemployement," Economics Working Papers 1076, Department of Economics and Business, Universitat Pompeu Fabra, revised Mar 2008.
- Takushi Kurozumi & Willem Van Zandweghe, 2008. "Labor market search and interest rate policy," Research Working Paper RWP 08-03, Federal Reserve Bank of Kansas City.
- Christoffel, Kai & Kuester, Keith, 2008.
"Resuscitating the wage channel in models with unemployment fluctuations,"
Working Paper Series
0923, European Central Bank.
- Christoffel, Kai & Kuester, Keith, 2008. "Resuscitating the wage channel in models with unemployment fluctuations," Journal of Monetary Economics, Elsevier, vol. 55(5), pages 865-887, July.
- Blanchard, Olivier Jean & Kahn, Charles M, 1980. "The Solution of Linear Difference Models under Rational Expectations," Econometrica, Econometric Society, vol. 48(5), pages 1305-11, July.
- Thomas Lubik & Michael Krause, 2004. "A Note on Instability and Indeterminacy in Search and Matching Models," Economics Working Paper Archive 518, The Johns Hopkins University,Department of Economics.
When requesting a correction, please mention this item's handle: RePEc:kie:kieliw:1506. See general information about how to correct material in RePEc.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Dieter Stribny)
If references are entirely missing, you can add them using this form.