Moral-hazard-free insurance: mean-variance premium principle and rank-dependent utility theory

Research output: Journal article publicationJournal articleAcademic researchpeer-review

Abstract

This paper investigates a Pareto-optimal insurance problem, where the insured maximizes her rank-dependent utility preference and the insurer is risk-neutral and employs the mean-variance premium principle. To eliminate potential moral hazard issues, we only consider the so-called moral-hazard-free insurance contracts that obey the incentive compatibility constraint. The insurance problem is first formulated as a non-concave maximization problem involving Choquet expectation, then turned into a concave quantile optimization problem and finally solved by the calculus of variations method. The optimal contract is expressed by a semi-linear second-order double-obstacle ordinary differential equation with nonlocal operator. An effective numerical method is proposed to compute the optimal contract assuming the probability weighting function has a density. Also, we provide an example that is analytically solved.

Original languageEnglish
Pages (from-to)1-26
Number of pages26
JournalScandinavian Actuarial Journal
Early online date8 Jun 2022
DOIs
Publication statusE-pub ahead of print - 8 Jun 2022

Keywords

  • Optimal insurance
  • mean-variance premium principle
  • moral-hazard-free insurance
  • quantile optimization
  • rank-dependent utility theory

ASJC Scopus subject areas

  • Statistics and Probability
  • Economics and Econometrics
  • Statistics, Probability and Uncertainty

Cite this