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New Microfoundations for the Aggregate Matching Function, with Empirical and Theoretical Implications

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  • Margaret Stevens

Abstract

Although a number of different models have been suggested for the process that brings workers and firms together in the labour market, none of these performs well in empirical studies of the aggregate matching function. Empirically, the most successful functional form is Cobb-Douglas, for which there are no microfoundations in the existing literature. I present a new model for the matching process, based on a `telephone line` Poisson queuing process. This implies a CES matching function, approximately Cobb-Douglas when marginal search costs are approximately constant. The model provides an interpretation for empirical evidence, and insight into the theoretical efficiency conditions for matching models.

Suggested Citation

  • Margaret Stevens, 2002. "New Microfoundations for the Aggregate Matching Function, with Empirical and Theoretical Implications," Economics Series Working Papers 95, University of Oxford, Department of Economics.
  • Handle: RePEc:oxf:wpaper:95
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    File URL: http://www.economics.ox.ac.uk/materials/working_papers/paper095.pdf
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    References listed on IDEAS

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    1. Christopher A. Pissarides & Barbara Petrongolo, 2001. "Looking into the Black Box: A Survey of the Matching Function," Journal of Economic Literature, American Economic Association, vol. 39(2), pages 390-431, June.
    2. Hall, Robert E., 1979. "A theory of the natural unemployment rate and the duration of employment," Journal of Monetary Economics, Elsevier, vol. 5(2), pages 153-169, April.
    3. Diamond, Peter A, 1982. "Aggregate Demand Management in Search Equilibrium," Journal of Political Economy, University of Chicago Press, vol. 90(5), pages 881-894, October.
    4. Acemoglu, Daron & Shimer, Robert, 1999. "Holdups and Efficiency with Search Frictions," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 40(4), pages 827-849, November.
    5. Peters, Michael, 1984. "Bertrand Equilibrium with Capacity Constraints and Restricted Mobility," Econometrica, Econometric Society, vol. 52(5), pages 1117-1127, September.
    6. Moen, Espen R, 1997. "Competitive Search Equilibrium," Journal of Political Economy, University of Chicago Press, vol. 105(2), pages 385-411, April.
    7. Arthur J. Hosios, 1990. "On The Efficiency of Matching and Related Models of Search and Unemployment," Review of Economic Studies, Oxford University Press, vol. 57(2), pages 279-298.
    Full references (including those not matched with items on IDEAS)

    More about this item

    Keywords

    search; matching function;

    JEL classification:

    • J41 - Labor and Demographic Economics - - Particular Labor Markets - - - Labor Contracts

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