Abstract:In this paper, we study the e¤ects of government debt on macroeconomic aggregates in a non-Ricardian framework. We develop a micro-founded framework which combines time-varying markups, endogenous labor supply and overlapping generations based on in…nitely-lived families. The main contribution of this paper is to provide a new transmission mechanism of public debt through the countercyclical markup movements induced by external deep habits. We analyze the e¤ects of debt-…nanced tax cuts. We show that the interest rate rises, entailing higher markups, which imply a fall in employment and consumption. It is particularily noteworthy that, even without capital, a crowding out e¤ect of government debt is obtained in the long run. However, the short-run expansionary e¤ect of debt-…nanced tax cuts, which would eventually be expected in a non-Ricardian framework, fails to occur. This is due to our ‡exible-price framework. On the other hand, we show that incorporating sticky prices in our model causes debt-…nanced tax cuts to have a short-run expansionary e¤ect while preserving the long-run contractionary e¤ect.
JEL Codes : E63; E52Keywords : Wealth E¤ects, Fiscal Policy, Public Debt Shock, Deep Habits, Overlapping Generations, Monopolistic Competition.
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Non-T echnical SummaryThe recent economic crisis in Europe and United States has induced many governments to intervene to …ght the recession. The active use of …scal policy has revived the old debate on the impact of government spending and debt on economic activity. In order to analyze this issue the failure of Ricardian equivalence is required, as otherwise …scal policy is neutral and government debt has no e¤ect on macroeconomic aggregates. In this paper, the Ricardian equivalence breaks down because of the overlapping generations structure of our model.Traditionally it is suggested that an expansionary …scal policy has a positive e¤ect on aggregate demand in the short run but negative e¤ects in the long run due to the crowding-out e¤ects on investment. From the theoretical point of view, can we have a model, without capital and default risk, capable of reproducing the short-run expansionary e¤ect of public debt, while preserving the long-run negative e¤ects?In this paper we analyze the e¤ects of public debt change in a nonRicardian framework without capital, with endogenous labor supply and time-varying markups. We …nd that a tax cut …nanced by government debt entails a fall in consumption and employment both in the short run and in the long run when prices are ‡exible. Notice that the long-run crowding out e¤ect on output is preserved even without capital. However, we do not …nd the traditional short-run expansionary e¤ect on output and consumption. On the other hand, when prices are sticky, the short-run expansionary e¤ect is obtained. So this paper o¤ers a micro-founded general equilibrium model, where government debt has a short-run expansionary e¤ect and longrun contractionary e¤ect which is not related to the capital. The novelty in this paper is the ...