Quality of After-Sales Services in a Competitive Insurance Sector†

[Ita:]This paper tackles the issue of unverifiable quality of after-sales insurance services, such as a prompt reimbursement of damages. A dynamic model is introduced in order to allow reputation to emerge as a means of disciplining insurance firms to deliver high quality. The equilibrium of a repeated Bertrand game among the insurers is analysed and conditions are derived under which more concentration in the insurance industry can lead to greater equilibrium consumer welfare.