Do Workers Work More When Wages Are High? Evidence from a Randomized Field Experiment
Most previous studies on intertemporal labor supply found very small or insignificant substitution effects. It is not clear, however, whether these results are due to institutional constraints on workers’ labor supply choices or whether the behavioral assumptions of the standard life cycle model with time separable preferences are empirically invalid. We conducted a randomized field experiment in a setting in which workers were free to choose their working times and their efforts during working time. We document a large positive wage elasticity of overall labor supply and an even larger wage elasticity of labor hours, which implies that the wage elasticity of effort per hour is negative. While the standard life cycle model cannot explain the negative effort elasticity, we show that a modified neoclassical model with preference spillovers across periods and a model with reference dependent, loss averse preferences are consistent with the evidence. With the help of a further experiment we can show that only loss averse individuals exhibit a significantly negative effort response to the wage increase and that the degree of loss aversion predicts the size of the negative effort response.
|Date of creation:||Jan 2004|
|Date of revision:|
|Publication status:||published in: American Economic Review, 2007, 97 (1), 298-317|
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- Edward P. Lazear, 1996.
"Performance Pay and Productivity,"
NBER Working Papers
5672, National Bureau of Economic Research, Inc.
- 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.
- Joseph Altonji, 1984. "Intertemporal Substitution in Labor Supply: Evidence from Micro Data," Working Papers 562, Princeton University, Department of Economics, Industrial Relations Section..
- Mankiw, N Gregory & Rotemberg, Julio J & Summers, Lawrence H, 1985.
"Intertemporal Substitution in Macroeconomics,"
The Quarterly Journal of Economics,
MIT Press, vol. 100(1), pages 225-51, February.
- David Card, 1990.
"Intertemporal Labor Supply: An Assessment,"
649, Princeton University, Department of Economics, Industrial Relations Section..
- Camerer, Colin & Babcock, Linda & Loewenstein, George & Thaler, Richard, 1996.
"Labor Supply of New York City Cab Drivers: One Day At A time,"
960, California Institute of Technology, Division of the Humanities and Social Sciences.
- Camerer, Colin, et al, 1997. "Labor Supply of New York City Cabdrivers: One Day at a Time," The Quarterly Journal of Economics, MIT Press, vol. 112(2), pages 407-41, May.
- Robert G. King & Sergio T. Rebelo, 2000.
"Resuscitating Real Business Cycles,"
NBER Working Papers
7534, National Bureau of Economic Research, Inc.
- Browning, Martin & Deaton, Angus & Irish, Margaret, 1985. "A Profitable Approach to Labor Supply and Commodity Demands over the Life-Cycle," Econometrica, Econometric Society, vol. 53(3), pages 503-43, May.
- Ridder, G. & Tunali, I., 1997.
"Stratified Partial Likelihood Estimation,"
1997/17, Koc University.
- Athey, Susan & Schmutzler, Armin, 2001. "Investment and Market Dominance," RAND Journal of Economics, The RAND Corporation, vol. 32(1), pages 1-26, Spring.
- Richard Blundell & Thomas MaCurdy, 1998.
"Labour supply: a review of alternative approaches,"
IFS Working Papers
W98/18, Institute for Fiscal Studies.
- Robin M. Hogarth & Hillel J. Einhorn, 1990. "Venture Theory: A Model of Decision Weights," Management Science, INFORMS, vol. 36(7), pages 780-803, July.
- Harry J. Paarsch & Bruce S. Shearer, 1999. "The Response of Worker Effort to Piece Rates: Evidence from the British Columbia Tree-Planting Industry," Journal of Human Resources, University of Wisconsin Press, vol. 34(4), pages 643-667.
- Robin Cubitt & Chris Starmer & Robert Sugden, 1998. "On the Validity of the Random Lottery Incentive System," Experimental Economics, Springer, vol. 1(2), pages 115-131, September.
- Gerald S. Oettinger, 1999. "An Empirical Analysis of the Daily Labor Supply of Stadium Vendors," Journal of Political Economy, University of Chicago Press, vol. 107(2), pages 360-392, April.
- Read, Daniel & Loewenstein, George & Rabin, Matthew, 1999. "Choice Bracketing," Journal of Risk and Uncertainty, Springer, vol. 19(1-3), pages 171-97, December.
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