Endogenous Partial Insurance and Inequality

Endogenous Trading Constraints with Incomplete Asset Markets

Eric Mengus and Roberto Pancrazi

Journal of the European Economic Association, 2020, vol. 18, issue 5, 2270-2314

Abstract: In this paper, we propose a model of endogenous partial insurance and we investigate its implications for macroeconomic outcomes, such as wealth inequality, asset accumulation, interest rate, and consumption smoothing. To this end, we include participation costs to state-contingent asset markets into an otherwise standard Aiyagari (1994) model. We highlight the resulting nonmonotonic relationship between wealth and insurance-market participation when insurance is costly. Poor households remain uninsured, middle-class households participate in the insurance market, whereas rich households decide to self-insure by only purchasing risk-free assets. After theoretically characterizing the endogenous partial insurance equilibrium, we quantify its effect, emphasizing the roles of a participation channel and an interest rate channel.

Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:oup:jeurec:v:18:y:2020:i:5:p:2270-2314.

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