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General existence of competitive equilibrium in the growth model with an endogenous labor-leisure choice

Author

Listed:
  • Aditya Goenka

    (University of Birmingham [Birmingham])

  • Manh-Hung Nguyen

    (TSE-R - Toulouse School of Economics - UT Capitole - Université Toulouse Capitole - UT - Université de Toulouse - EHESS - École des hautes études en sciences sociales - CNRS - Centre National de la Recherche Scientifique - INRAE - Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement)

Abstract

We prove the existence of competitive equilibrium in the canonical optimal growth model with elastic labor supply under general conditions. In this model, strong conditions to rule out corner solutions are often not well justied. We show using a separation argument that there exist Lagrange multipliers that can be viewed as a system of competitive prices. Neither Inada conditions, nor strict concavity, nor homogeneity, nor dierentiability are required for existence of a competitive equilibrium. Thus, we cover important specications used in the macroeconomics literature for which existence of a competitive equilibrium is not well understood. We give examples to illustrate the violation of the conditions used in earlier existence results but where a competitive equilibrium can be shown to exist following the approach in this paper.

Suggested Citation

  • Aditya Goenka & Manh-Hung Nguyen, 2020. "General existence of competitive equilibrium in the growth model with an endogenous labor-leisure choice," Post-Print hal-02952548, HAL.
    • Handle: RePEc:hal:journl:hal-02952548
    DOI: 10.1016/j.jmateco.2020.08.004
    Note: View the original document on HAL open archive server: https://hal.science/hal-02952548
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    Keywords

    Optimal growth; Competitive equilibrium; Lagrange multipliers; Elastic la-; Bor supply; Inada conditions.;
    All these keywords.

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