IDEAS home Printed from
   My bibliography  Save this paper

On Employment Contracts with Heterogeneous Workers and Endogenous On-the-job Search


  • Francis Kiraly

    (Department of Economics Keele University,)


This paper considers an equilibrium search model with on-the-job search where firms set wages.We look at optimal employment contracts when workers are heterogeneous and choose search intensity. Firms may want to retain their good workers by matching any offers that these employees may receive from other firms. However, if workers are able to vary their search intensity, this ‘‘offer-matching’’ policy leads to a moral hazard problem. Workers are induced to search more intensively, which is costly. Assuming that firms can commit to retain and employ all workers, irrespective of their ability, we establish conditions under which it is optimal to do so. The idea is that firms can create an adverse selection situation that reduces outside offers from raiding firms. We describe equilibria where all firms use these so-called ‘‘pooling’’ contracts. The intuition is that the gains from reducing the returns to search may outweigh the costs of retaining all workers, including the low ability ones. We also derive conditions under which only ‘‘separating’’ contracts are offered and firms only retain the high ability workers. Some equilibria involve contracts where an ‘‘efficiency wage’’ is paid that again deters workers from actively looking for outside offers. Finally, we show that for a range of parameter values multiple equilibria are also possible.

Suggested Citation

  • Francis Kiraly, 2003. "On Employment Contracts with Heterogeneous Workers and Endogenous On-the-job Search," Keele Economics Research Papers KERP 2003/04, Centre for Economic Research, Keele University, revised Jan 2004.
  • Handle: RePEc:kee:kerpuk:2003/04
    Note: Revised (January 2004) version of my (September 2003) paper entitled Layoffs and Promotions with Heterogeneous Workers and On-the-job Search.

    Download full text from publisher

    File URL:
    Download Restriction: no

    More about this item


    labour market frictions; labour contracts; turnover; search effort; moral hazard and adverse selection.;

    JEL classification:

    • J31 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Wage Level and Structure; Wage Differentials
    • J41 - Labor and Demographic Economics - - Particular Labor Markets - - - Labor Contracts
    • J63 - Labor and Demographic Economics - - Mobility, Unemployment, Vacancies, and Immigrant Workers - - - Turnover; Vacancies; Layoffs
    • J64 - Labor and Demographic Economics - - Mobility, Unemployment, Vacancies, and Immigrant Workers - - - Unemployment: Models, Duration, Incidence, and Job Search


    Access and download statistics


    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:kee:kerpuk:2003/04. See general information about how to correct material in RePEc.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: (Martin E. Diedrich). General contact details of provider: .

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service hosted by the Research Division of the Federal Reserve Bank of St. Louis . RePEc uses bibliographic data supplied by the respective publishers.