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Island matching

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  • Mortensen, Dale T.

Abstract

A plausible micro foundation for the matching function, postulated in models of equilibrium unemployment, is proposed. The flow of matches formed is an increasing and concave function of the number of jobs and workers to be matched holding the other constant, but exhibits increasing to scale. Nevertheless, the function is consistent with the observed Beveridge curve and the log linear relationship between the job finding rate and the vacancy-unemployment ratio. Although a market equilibrium in which wages are determined by ex post auctions is not constrained efficient, a modified auction exists that decentralizes the solution to the social planner's problem.

Suggested Citation

  • Mortensen, Dale T., 2009. "Island matching," Journal of Economic Theory, Elsevier, vol. 144(6), pages 2336-2353, November.
    • Handle: RePEc:eee:jetheo:v:144:y:2009:i:6:p:2336-2353
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    Cited by:

    1. Carlos Carrillo‐Tudela & Ludo Visschers, 2023. "Unemployment and Endogenous Reallocation Over the Business Cycle," Econometrica, Econometric Society, vol. 91(3), pages 1119-1153, May.
    2. Carlos Usabiaga & Pablo Álvarez de Toledo & Fernando Núñez, 2013. "Labour Market Segmentation, Clusters, Mobility And Unemployment Duration With Individual Microdata," EcoMod2013 5688, EcoMod.
    3. Kaas Leo, 2010. "Variable Search Intensity with Coordination Unemployment," The B.E. Journal of Macroeconomics, De Gruyter, vol. 10(1), pages 1-33, October.
    4. Julien, Benoit & Kennes, John & Ritter, Moritz, 2018. "Bidding for teams," Labour Economics, Elsevier, vol. 52(C), pages 68-73.
    5. Bauer, Anja, 2013. "Mismatch unemployment : evidence from Germany 2000-2010," IAB-Discussion Paper 201310, Institut für Arbeitsmarkt- und Berufsforschung (IAB), Nürnberg [Institute for Employment Research, Nuremberg, Germany].
    6. Claudio Michelacci & Josep Pijoan-Mas, 2012. "Intertemporal Labour Supply with Search Frictions," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 79(3), pages 899-931.
    7. Ohanian, Lee E. & Prescott, Edward C. & Stokey, Nancy L., 2009. "Introduction to dynamic general equilibrium," Journal of Economic Theory, Elsevier, vol. 144(6), pages 2235-2246, November.
    8. Cecilia Vives, 2019. "Human capital and market size," Papers in Regional Science, Wiley Blackwell, vol. 98(1), pages 75-92, February.
    9. Carlos Usabiaga & Fernando Núñez & Pablo Álvarez de Toledo, 2013. "Segmentación del mercado de trabajo, clusters, movilidad y duración de desempleo con datos individuales," Economic Working Papers at Centro de Estudios Andaluces E2013/02, Centro de Estudios Andaluces.
    10. Álvarez de Toledo, Pablo & Núñez, Fernando & Usabiaga, Carlos, 2014. "An empirical approach on labour segmentation. Applications with individual duration data," Economic Modelling, Elsevier, vol. 36(C), pages 252-267.
    11. Simonetta Longhi, 2012. "Job Competition and the Wage Curve," Regional Studies, Taylor & Francis Journals, vol. 46(5), pages 611-620, August.
    12. Kaas, Leo, 2008. "Variable Search Intensity in an Economy with Coordination Unemployment," IZA Discussion Papers 3697, Institute of Labor Economics (IZA).
    13. Benoit Julien & John Kennes & Moritz Ritter, 2013. "Bidding for Clubs," Economics Working Papers 2013-19, Department of Economics and Business Economics, Aarhus University.
    14. Guido Menzio & Randall Wright, 2016. "Introduction to the Special Issue in Honor of Dale Mortensen," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 19, pages 1-3, January.

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    More about this item

    Keywords

    Matching function Beveridge curve Constrained efficiency Equilibrium unemployment;

    JEL classification:

    • E24 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Employment; Unemployment; Wages; Intergenerational Income Distribution; Aggregate Human Capital; Aggregate Labor Productivity
    • E32 - Macroeconomics and Monetary Economics - - Prices, Business Fluctuations, and Cycles - - - Business Fluctuations; Cycles
    • J64 - Labor and Demographic Economics - - Mobility, Unemployment, Vacancies, and Immigrant Workers - - - Unemployment: Models, Duration, Incidence, and Job Search

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