A New Keynesian Model with Unemployment

National Bank of Belgium Working Paper No. 92

57 Pages Posted: 9 Oct 2010

See all articles by Olivier J. Blanchard

Olivier J. Blanchard

National Bureau of Economic Research (NBER); Peter G. Peterson Institute for International Economics

Jordi Galí

Universitat Pompeu Fabra - Centre de Recerca en Economia Internacional (CREI); Massachusetts Institute of Technology (MIT) - Department of Economics; Centre for Economic Policy Research (CEPR); National Bureau of Economic Research (NBER)

Date Written: October 12, 2006

Abstract

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.

Keywords: new Keynesian model, labor market frictions, search model, unemployment, sticky prices, real wage rigidities

JEL Classification: E32, E50

Suggested Citation

Blanchard, Olivier J. and Gali, Jordi, A New Keynesian Model with Unemployment (October 12, 2006). National Bank of Belgium Working Paper No. 92. Available at SSRN: https://ssrn.com/abstract=1688968 or http://dx.doi.org/10.2139/ssrn.1688968

Olivier J. Blanchard (Contact Author)

National Bureau of Economic Research (NBER) ( email )

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

Peter G. Peterson Institute for International Economics ( email )

1750 Massachusetts Avenue, NW
Washington, DC 20036
United States

Jordi Gali

Universitat Pompeu Fabra - Centre de Recerca en Economia Internacional (CREI) ( email )

Ramon Trias Fargas, 25-27
Barcelona, 08005
Spain
+34 93 542 2754 (Phone)
+34 93 542 1746 (Fax)

HOME PAGE: http://www.econ.upf.es/~gali

Massachusetts Institute of Technology (MIT) - Department of Economics ( email )

50 Memorial Drive
Cambridge, MA 02142
United States

Centre for Economic Policy Research (CEPR)

London
United Kingdom

National Bureau of Economic Research (NBER)

1050 Massachusetts Avenue
Cambridge, MA 02138
United States

Register to save articles to
your library

Register

Paper statistics

Downloads
312
Abstract Views
1,631
rank
96,589
PlumX Metrics