Constrained efficiency in the neoclassical growth model with uninsurable idiosyncratic shocks
AbstractWe investigate the welfare properties of the one-sector neoclassic growth model with uninsurable idiosyncratic shocks. We focus on the constrained efficiency notion of the general equilibrium literature, and we demonstrate constrained inefficiency for our model. We provide a characterization of constrained efficiency that uses the first-order condition of a constrained planner's problem that points to the margins of relevance for whether capital is too high or too low: the income composition of the (consumption-)poor. We calibrate our benchmark model parameters governing idiosyncratic risks to the U.S. earnings and wealth distribution, and for this distribution the income of the poor is mainly composed of labor earnings. We compute the constrained-efficient allocations - including transition dynamics - for our model economy, and we conclude that the long-run capital stock in a laissez-faire world is not only too low, but much too low. We also show that one can find parameterizations with different qualitative features: in one case, the steady-state capital stock is too high, and in another case no steady state exists.
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Bibliographic InfoPaper provided by Penn Institute for Economic Research, Department of Economics, University of Pennsylvania in its series PIER Working Paper Archive with number 05-023.
Length: 51 pages
Date of creation: 23 Jul 2005
Date of revision:
Constrained efficiency; idiosyncratic risks; neoclassical growth model;
Other versions of this item:
- Julio Dávila & Jay H. Hong & Per Krusell & José‐Víctor Ríos‐Rull, 2012. "Constrained Efficiency in the Neoclassical Growth Model With Uninsurable Idiosyncratic Shocks," Econometrica, Econometric Society, vol. 80(6), pages 2431-2467, November.
- Julio Davila & Jay H. Hong & Per Krusell & José-Victor Rios Rull, 2005. "Constrained efficiency in the neoclassical growth model with uninsurable idiosyncratic shocks," Cahiers de la Maison des Sciences Economiques b05066, Université Panthéon-Sorbonne (Paris 1).
- Julio Davila & Jay H. Hong & Per Krusell & José-Victor Rios Rull, 2005. "Constrained efficiency in the neoclassical growth model with uninsurable idiosyncratic shocks," UniversitÃ© Paris1 PanthÃ©on-Sorbonne (Post-Print and Working Papers) halshs-00196183, HAL.
- O41 - Economic Development, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - One, Two, and Multisector Growth Models
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