Fiscal Policy in an Unemployment Crisis∗
Fiscal Policy in an Unemployment Crisis∗ Pontus Rendahly University of Cambridge, CEPR, and Centre for Macroeconomics (CFM) April 30, 2014 Abstract This paper shows that large fiscal multipliers arise naturally from equilibrium unemploy- ment dynamics. In response to a shock that brings the economy into a liquidity trap, an expansion in government spending increases output and causes a fall in the unemployment rate. Since movements in unemployment are persistent, the effects of current spending linger into the future, leading to an enduring rise in income. As an enduring rise in income boosts private demand, even a temporary increase in government spending sets in motion a virtuous employment-spending spiral with a large associated multiplier. This transmission mechanism contrasts with the conventional view in which fiscal policy may be efficacious only under a prolonged and committed rise in government spending, which engineers a spiral of increasing inflation. Keywords: Fiscal multiplier, liquidity trap, zero lower bound, unemployment inertia. ∗The first version of this paper can be found as Cambridge Working Papers in Economics No. 1211. yThe author would like to thank Andrea Caggese, Giancarlo Corsetti, Wouter den Haan, Jean-Paul L'Huillier, Giammario Impulitti, Karel Mertens, Emi Nakamura, Kristoffer Nimark, Evi Pappa, Franck Portier, Morten Ravn, Jon Steinsson, Silvana Tenreyro, and Mirko Wiederholt for helpful comments and suggestions. I am grateful to seminar participants at LSE, Royal Economic Society, UCL, European Univer- sity Institute, EIEF, ESSIM 2012, SED 2013, Bonn University, Goethe University, UAB, and in particular to James Costain, and Jonathan Heathcote for helpful discussions and conversations. Financial support is gratefully acknowledge from the Centre for Macroeconomics (CFM) and the Institute for New Economic Thinking (INET).
[Show full text]