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Capital-labor substitution, equilibrium indeterminacy, and the cyclical behavior of labor income

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Jang-Ting Guo
Kevin J. Lansing

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Abstract

This paper examines the quantitative relationship between the elasticity of capital-labor substitution and the conditions needed for equilibrium indeterminacy (and belief-driven fluctuations) in a one-sector neoclassical growth model. Our analysis employs a “normalized” version of the CES production function so that all steady-state allocations and factor income shares are held constant as the elasticity of substitution is varied. We demonstrate numerically that higher elasticities cause the threshold degree of increasing returns for indeterminacy to decline monotonically, albeit very gradually. When the elasticity of substitution is unity (the Cobb-Douglas case), our model requires increasing returns to scale of around 1.08 for indeterminacy. When the elasticity of substitution is raised to 5, which far exceeds any empirical estimate, the threshold degree of increasing returns reduces to around 1.05. We also demonstrate analytically that labor’s share of income becomes procyclical as the elasticity of substitution increases above unity, whereas labor’s share in postwar U.S. data is countercyclical. This observation, together with other empirical evidence, indicates that the elasticity of capital-labor substitution in the U.S. economy is actually below unity.

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Paper provided by Federal Reserve Bank of San Francisco in its series Working Paper Series with number 2008-06.

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Date of creation: 2008
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Handle: RePEc:fip:fedfwp:2008-06

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Keywords: Capital Labor supply

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  1. Turnovsky, Stephen J., 2002. "Intertemporal and intratemporal substitution, and the speed of convergence in the neoclassical growth model," Journal of Economic Dynamics and Control, Elsevier, vol. 26(9-10), pages 1765-1785, August. [Downloadable!] (restricted)
  2. Lloyd-Braga, Teresa & Nourry, Carine & Venditti, Alain, 2006. "Indeterminacy with Small Externalities: The Role of Non-Separable Preferences," CEPR Discussion Papers 5541, C.E.P.R. Discussion Papers. [Downloadable!] (restricted)
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  3. Benhabib Jess & Farmer Roger E. A., 1994. "Indeterminacy and Increasing Returns," Journal of Economic Theory, Elsevier, vol. 63(1), pages 19-41, June. [Downloadable!] (restricted)
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  4. Basu, Susanto & Fernald, John G, 1997. "Returns to Scale in U.S. Production: Estimates and Implications," Journal of Political Economy, University of Chicago Press, vol. 105(2), pages 249-83, April.
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  5. Kent Smetters, 2003. "The (Interesting) Dynamic Properties of the Neoclassical Growth Model with CES Production," NBER Technical Working Papers 0290, National Bureau of Economic Research, Inc. [Downloadable!] (restricted)
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  6. Ellen R. McGrattan & James A. Schmitz, Jr., 1999. "Maintenance and repair: too big to ignore," Quarterly Review, Federal Reserve Bank of Minneapolis, issue Fall, pages 2-13. [Downloadable!]
  7. Klump, Rainer & Preissler, Harald, 2000. " CES Production Functions and Economic Growth," Scandinavian Journal of Economics, Blackwell Publishing, vol. 102(1), pages 41-56, March. [Downloadable!] (restricted)
  8. Nishimura, Kazuo & Venditti, Alain, 2004. "Indeterminacy And The Role Of Factor Substitutability," Macroeconomic Dynamics, Cambridge University Press, vol. 8(04), pages 436-465, September. [Downloadable!]
  9. Gomme, Paul & Greenwood, Jeremy, 1995. "On the cyclical allocation of risk," Journal of Economic Dynamics and Control, Elsevier, vol. 19(1-2), pages 91-124. [Downloadable!] (restricted)
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  10. Robert S. Chirinko, 2008. "ó: The Long And Short Of It," CESifo Working Paper Series CESifo Working Paper No. , CESifo GmbH. [Downloadable!]
  11. Rainer Klump & Olivier de La Grandville, 2000. "Economic Growth and the Elasticity of Substitution: Two Theorems and Some Suggestions," American Economic Review, American Economic Association, vol. 90(1), pages 282-291, March. [Downloadable!] (restricted)
  12. Chirinko, Robert S., 2008. "[sigma]: The long and short of it," Journal of Macroeconomics, Elsevier, vol. 30(2), pages 671-686, June. [Downloadable!] (restricted)
  13. Grandmont, Jean-Michel & Pintus, Patrick & de Vilder, Robin, 1998. "Capital-Labor Substitution and Competitive Nonlinear Endogenous Business Cycles," Journal of Economic Theory, Elsevier, vol. 80(1), pages 14-59, May. [Downloadable!] (restricted)
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  14. Wen, Yi, 1998. "Capacity Utilization under Increasing Returns to Scale," Journal of Economic Theory, Elsevier, vol. 81(1), pages 7-36, July. [Downloadable!] (restricted)
  15. Jang-Ting Guo & Kevin J. Lansing, 2007. "Maintenance expenditures and indeterminacy under increasing returns to scale," International Journal of Economic Theory, The International Society for Economic Theory, vol. 3(2), pages 147-158. [Downloadable!] (restricted)
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  16. Boldrin, Michael & Horvath, Michael, 1995. "Labor Contracts and Business Cycles," Journal of Political Economy, University of Chicago Press, vol. 103(5), pages 972-1004, October. [Downloadable!] (restricted)
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