Intertemporal Labor Supply and Long Term Employment Contracts
In this paper we compare the implications of a symmetric information contracting model and a dynamic labor supply model for changes in individual earnings and hours over time. The critical distinction between these models is whether earnings represent optimal consumption or payment for current labor services. We develop a simple test between labor supply and contracting models based on the relative variability of earnings and hours with respect to changes in productivity. If earnings represent consumption then changes in productivity generate smaller changes in earnings than hours. The opposite is true in the labor supply model. We apply our test to longitudinal data on male household heads fran the Panel Study of Income Dynamics and the National Longitudinal Survey of Older Men, focusing on individuals who do not change employers during the survey period. Neither model fits the data well. In both surveys, however, the contrihition of changes in productivity to changes in earnings is greater than the contribution to changes in hours. The data are more consistent with a labor supply interpretation, although the estimated labor supply elasticities suggest that changes in hours occur at fixed wage rates.
|Date of creation:||Feb 1986|
|Date of revision:|
|Publication status:||published as Abowd, John and David Card. "Intertemporal Labor Supply and Long Term Employment Contracts," American Economic Review, Vol. 77, No. March 1987, pp. 50-68.|
|Contact details of provider:|| Postal: National Bureau of Economic Research, 1050 Massachusetts Avenue Cambridge, MA 02138, U.S.A.|
Web page: http://www.nber.org
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- Heckman, James J, 1974. "Life Cycle Consumption and Labor Supply: An Explanation of the Relationship Between Income and Consumption Over the Life Cycle," American Economic Review, American Economic Association, vol. 64(1), pages 188-94, March.
- Altonji, Joseph G, 1986. "Intertemporal Substitution in Labor Supply: Evidence from Micro Data," Journal of Political Economy, University of Chicago Press, vol. 94(3), pages S176-S215, June.
- MaCurdy, Thomas E, 1981. "An Empirical Model of Labor Supply in a Life-Cycle Setting," Journal of Political Economy, University of Chicago Press, vol. 89(6), pages 1059-85, December.
- Lucas, Robert E, Jr & Rapping, Leonard A, 1969. "Real Wages, Employment, and Inflation," Journal of Political Economy, University of Chicago Press, vol. 77(5), pages 721-54, Sept./Oct.
- Azariadis, Costas, 1975. "Implicit Contracts and Underemployment Equilibria," Journal of Political Economy, University of Chicago Press, vol. 83(6), pages 1183-1202, December.
- repec:fth:prinin:198 is not listed on IDEAS
- Joseph Altonji & Christina Paxson, 1985. "Job Characteristics and Hours of Work," Working Papers 578, Princeton University, Department of Economics, Industrial Relations Section..
- Martin Neil Baily, 1974. "Wages and Employment under Uncertain Demand," Review of Economic Studies, Oxford University Press, vol. 41(1), pages 37-50.
- repec:pri:indrel:198 is not listed on IDEAS
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