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Seeking for Labor Demand Heterogeneity


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  • Brigitte DORMONT


The aim of this paper is to examine whether the estimation of labor demand can be affected by individual behavior heterogeneity. We shall consider an error-components model with variable-coefficients, where the coefficients are random and vary accross firms according to the values of time-constant explanatory variables and to a random firm-specific effect. The specification of labor demand which stems from the variable coefficients hypothesis is estimated by the generalized method of moments on a panel of 810 French manufacturing firms. Heterogeneities appear to be strongly significant. When the share of skilled workers is higher, the ajustment speed is lower and the influence of wages on labor demand decreases (in absolute value) as well as that of sector demand shocks. Moreover, a higher market-share leads to a smaller adjustment speed and to an increased influence of wages and industry demand on employment. Our estimates reveal strongly significant heterogeneities in labor demand behavior. However, the study of aggregation biases leads to the conclusion that they are very small. In fact our individual coefficients are uncorrelated with the explanatory variables, and this is a sufficient condition for the absence of aggregation biases.

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Bibliographic Info

Article provided by ENSAE in its journal Annals of Economics and Statistics.

Volume (Year): (1996)
Issue (Month): 41-42 ()
Pages: 79-96

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Handle: RePEc:adr:anecst:y:1996:i:41-42:p:04

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Cited by:
  1. Malinvaud, Edmond, 1997. "L’économétrie dans l’élaboration théorique et l’étude des politiques," L'Actualité Economique, Société Canadienne de Science Economique, Société Canadienne de Science Economique, vol. 73(1), pages 11-25, mars-juin.
  2. Benoît Mahy, 2005. "Flexibilité des contrats et demande de travail en Belgique," Reflets et perspectives de la vie économique, De Boeck Université, De Boeck Université, vol. 0(2), pages 25-35.
  3. François Legendre, 1999. "Qu'a-t-on appris sur le lien salaire/ emploi grâce à l'économétrie ?," Cahiers d'Économie Politique, Programme National Persée, Programme National Persée, vol. 34(1), pages 221-255.
  4. Patricia Le Maitre & François Legendre, 2001. "La sensibilité de l'emploi au coût du travail. Une exploration à partir de données de panel," Économie et Prévision, Programme National Persée, Programme National Persée, vol. 150(4), pages 1-11.


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