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Market Power and Separating Equilibrium in Job Market Signaling

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  • Khan, Abhimanyu

Abstract

The job market signaling model in Spence (1973) deals with a situation of asymmetric information. Workers vary in their productivity. A worker is privately informed of his productivity but the firms are not informed. Spence (1973) shows that in competitive markets, costly education may signal productivity -- workers of different productivities take up education to varying degrees, thereby resulting in a separating equilibrium where firms can infer a worker's productivity from his education choice. The importance of a separating equilibrium is that it resolves the informational asymmetry. In this paper, I enquire into the relationship between the firm's market power in the labour market (the market that is the source of asymmetric information) and the existence of separating equilibria. I show that a separating equilibrium exists, and therefore the informational asymmetry may be resolved, if and only if the market power of the firm in the labour market is not above a particular threshold.

Suggested Citation

  • Khan, Abhimanyu, 2022. "Market Power and Separating Equilibrium in Job Market Signaling," MPRA Paper 114957, University Library of Munich, Germany.
    • Handle: RePEc:pra:mprapa:114957
    as

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    References listed on IDEAS

    as
    1. George A. Akerlof, 1970. "The Market for "Lemons": Quality Uncertainty and the Market Mechanism," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 84(3), pages 488-500.
    2. Michael Spence, 1973. "Job Market Signaling," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 87(3), pages 355-374.
    3. Daeyoung Jeong, 2019. "Job market signaling with imperfect competition among employers," International Journal of Game Theory, Springer;Game Theory Society, vol. 48(4), pages 1139-1167, December.
    Full references (including those not matched with items on IDEAS)

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    More about this item

    Keywords

    asymmetric information; signaling; separating equilibrium; monopsony; market power;
    All these keywords.

    JEL classification:

    • D43 - Microeconomics - - Market Structure, Pricing, and Design - - - Oligopoly and Other Forms of Market Imperfection
    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design

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