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The (non-) effect of labor unionization on firm risk: Evidence from the options market

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  • Ghaly, Mohamed
  • Kostakis, Alexandros
  • Stathopoulos, Konstantinos

Abstract

Labor unionization has no causal effect on firm risk. Using a regression discontinuity design to study the impact of labor union elections on option-implied firm risk, we find that unionization per se does not affect investor perceptions about firm price, tail, or variance risk. This finding is robust to studying very short (5-trading day) and long (up to 2-year) windows around the elections. Moreover, there is no unionization effect on firm risk either in subsets of firms facing strong union bargaining power, or with characteristics that prior literature identifies as important determinants of the effect of unionization on firm outcomes.

Suggested Citation

  • Ghaly, Mohamed & Kostakis, Alexandros & Stathopoulos, Konstantinos, 2021. "The (non-) effect of labor unionization on firm risk: Evidence from the options market," Journal of Corporate Finance, Elsevier, vol. 66(C).
    • Handle: RePEc:eee:corfin:v:66:y:2021:i:c:s0929119920302601
    DOI: 10.1016/j.jcorpfin.2020.101816
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    More about this item

    Keywords

    Unionization; Labor power; Option-implied firm risk; Regression discontinuity design;
    All these keywords.

    JEL classification:

    • J51 - Labor and Demographic Economics - - Labor-Management Relations, Trade Unions, and Collective Bargaining - - - Trade Unions: Objectives, Structure, and Effects
    • G30 - Financial Economics - - Corporate Finance and Governance - - - General
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill

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