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The Efficient Liability Sharing Factor For Environmental Disasters: Lessons For Optimal Insurance Regulation

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  • Marcel Boyer
  • Donatella Porrini

Abstract

Using a structural model of the interactions between governments, firms and insurance companies, we characterise the distortions in environmental liability sharing between firms and insurance companies that the imperfect implementation of government policies implies. These distortions stem from three factors: the presence of moral hazard, the non congruence between firms/insurers objectives and social welfare, and the courts' imperfect assessment of safety care levels exerted by firms. We characterize cases where the efficient liability sharing factor is above or below its full information perfect implementation level. We derive comparative statics results indicating how sensitive the liability sharing factor is to changes in parameters (parameters that underlie the firm profit level and volatility, the cost of safety care, the monitoring cost, the social cost of public funds, the effectiveness of care in reducing the probability of accident) that are relevant for the characterization of optimal policies (liability sharing, safety care standards) toward environmental protection or the prevention of industrial accidents. We derive policy implications regarding environmental disaster insurance policies. À l'aide d'un modèle structurel des interactions entre les gouvernements, les entreprises et les assureurs, nous caractérisons les distorsions dans le partage des responsabilités entre entreprises et assureurs qu'implique la mise en place imparfaite des politiques gouvernementales. Ces distorsions résultent de trois facteurs : la présence de risque moral, la non-congruence des objectifs des entreprises, des assureurs et de bien-être social, et l'observation imparfaite des efforts de prévention des entreprises par le système judiciaire. Nous dérivons des résultats de statique comparée montrant la sensibilité du facteur de partage des responsabilités à des changements dans les paramètres sous-jacents à la profitabilité, au coût des efforts de prévention, à l'efficacité de ces efforts dans la réduction de la probabilité d'accident, au coût de monitoring, au coût social des fonds publics, et qui sont pertinents à la caractérisation des politiques optimales (partage de responsabilité, standard légal du niveau de prévention) de protection environnementale et de prévention des accidents. Nous en déduisons certaines implications quant aux politiques relatives à l'assurance contre les désastres environnementaux.

Suggested Citation

  • Marcel Boyer & Donatella Porrini, 2008. "The Efficient Liability Sharing Factor For Environmental Disasters: Lessons For Optimal Insurance Regulation," CIRANO Working Papers 2008s-03, CIRANO.
  • Handle: RePEc:cir:cirwor:2008s-03
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    References listed on IDEAS

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    2. Marcel Boyer & Donatella Porrini, 2004. "Modelling the choice between regulation and liability in terms of social welfare," Canadian Journal of Economics, Canadian Economics Association, vol. 37(3), pages 590-612, August.
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    Citations

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    Cited by:

    1. Gérard Mondello, 2017. "Lenders and Risky Activities: Strict Liability or Negligence Rule?," GREDEG Working Papers 2017-13, Groupe de REcherche en Droit, Economie, Gestion (GREDEG CNRS), Université Côte d'Azur, France.
    2. Mondello, Gérard, 2012. "La responsabilité environnementale des prêteurs : difficultés juridiques et ensemble des possibles," L'Actualité Economique, Société Canadienne de Science Economique, vol. 88(2), pages 257-278, Juin.
    3. Marcel Boyer & Donatella Porrini, 2010. "Optimal liability sharing and court errors: an exploratory analysis," Working Papers hal-00463913, HAL.
    4. Runze Yang & Ruigang Zhang, 2022. "Environmental Pollution Liability Insurance and Corporate Performance: Evidence from China in the Perspective of Green Development," IJERPH, MDPI, vol. 19(19), pages 1-18, September.
    5. Boyer, Marcel & Faye, Anne Catherine & Kotchoni, Rachidi, 2017. "Challenges and Pitfalls in Cartel Policy and Fining," TSE Working Papers 17-852, Toulouse School of Economics (TSE).
    6. Gérard Mondello, 2010. "Risky Activities and Strict Liability Rules: Delegating Safety," Working Papers 2010.103, Fondazione Eni Enrico Mattei.
    7. Gérard Mondello, 2012. "Strict Liability, Capped Strict Liability, and Care Effort under Asymmetric Information," Journal of Institutional and Theoretical Economics (JITE), Mohr Siebeck, Tübingen, vol. 168(2), pages 232-251, June.
    8. Grislain-Letrémy, Céline, 2012. "Assurance et prévention des catastrophes naturelles et technologiques," Economics Thesis from University Paris Dauphine, Paris Dauphine University, number 123456789/9073 edited by Villeneuve, Bertrand.
    9. Gérard Mondello, 2021. "Lenders' liability and ultra-hazardous activities," Post-Print halshs-03502693, HAL.
    10. Boyer, Marcel & Porrini, Donatella, 2011. "The impact of court errors on liability sharing and safety regulation for environmental/industrial accidents," International Review of Law and Economics, Elsevier, vol. 31(1), pages 21-29, March.
    11. Ben‐jiang Ma & Jing‐yu Ye & Geng Liu & Yuan‐ji Huang, 2020. "Adverse selection, limited compensation, and the design of environmental liability insurance contract in the case of enterprise bankruptcy," Managerial and Decision Economics, John Wiley & Sons, Ltd., vol. 41(7), pages 1327-1337, October.
    12. Ben White, 2015. "Do control rights determine the optimal extension of liability to investors? The case of environmental policy for mines," Journal of Regulatory Economics, Springer, vol. 48(1), pages 26-52, August.

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    More about this item

    Keywords

    Liability sharing; environmental insurance; safety care; moral hazard; principal-agent.; Partage de responsabilité; assurance environnementale; effort de prévention; risque moral; principal-agent.;
    All these keywords.

    JEL classification:

    • D82 - Microeconomics - - Information, Knowledge, and Uncertainty - - - Asymmetric and Private Information; Mechanism Design
    • G32 - Financial Economics - - Corporate Finance and Governance - - - Financing Policy; Financial Risk and Risk Management; Capital and Ownership Structure; Value of Firms; Goodwill
    • K13 - Law and Economics - - Basic Areas of Law - - - Tort Law and Product Liability; Forensic Economics
    • K32 - Law and Economics - - Other Substantive Areas of Law - - - Energy, Environmental, Health, and Safety Law
    • Q28 - Agricultural and Natural Resource Economics; Environmental and Ecological Economics - - Renewable Resources and Conservation - - - Government Policy

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