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Should environment be a concern for competition policy when firms face environmental liability ?
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Should environment be a concern for competition policy when firms face environmental liability ?

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  • Eric Langlais
  • Maxime Charreire

Abstract

This paper considers an oligopoly where firms produce a joint and indivisible environmental harm as a by-product of their output. We first analyze the effects on the oligopoly equilibrium of alternative designs in environmental liability law, secondly, we discuss the rationale for "non-conventional" competition policies, i.e. more concerned with public interest such as the preservation of human health or environment. We study firms decisions of care and output under various liability regimes (strict liability vs negligence) associated with alternative damages apportionment rules (per capita vs market share rule), and with damages multipliers. We find that basing an environmental liability law on the combination of strict liability, the per capita rule, and an "optimal" damages multiplier, is consistent with a conservative competition policy, focused on consumers surplus, since, weakening firms' market power also increases aggregate expenditures in environment preservation and social welfare. In contrast, a shift to the market share rule, or to a negligence regime, may be consistent with a restriction of competition, since firms' entry may instead lead to a decrease in aggregate environmental expenditures and losses of social welfare. Nevertheless the fine tuning of the policy requires specific information from a Competition Authority, which we discuss as well.

Suggested Citation

  • Eric Langlais & Maxime Charreire, 2020. "Should environment be a concern for competition policy when firms face environmental liability ?," EconomiX Working Papers 2020-25, University of Paris Nanterre, EconomiX.
    • Handle: RePEc:drm:wpaper:2020-25
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    Cited by:

    1. Eric Langlais & Andreea Cosnita-Langlais, 2022. "Incentives to differentiate under environmental liability laws : Product customization and precautionary effort," EconomiX Working Papers 2022-20, University of Paris Nanterre, EconomiX.
    2. Tim Friehe & Eric Langlais & Elisabeth Schulte, 2022. "Firm Liability When Third Parties and Consumers Incur Cumulative Harm," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 81(1), pages 53-71, January.

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    More about this item

    Keywords

    Strict liability; negligence; damages apportionment rules; market share liability; environmental liability; Cournot oligopoly; competition policy.;
    All these keywords.

    JEL classification:

    • L41 - Industrial Organization - - Antitrust Issues and Policies - - - Monopolization; Horizontal Anticompetitive Practices
    • L13 - Industrial Organization - - Market Structure, Firm Strategy, and Market Performance - - - Oligopoly and Other Imperfect Markets
    • K13 - Law and Economics - - Basic Areas of Law - - - Tort Law and Product Liability; Forensic Economics

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