Self-insuring against Liability Risk: Evidence from Physician Home Values in States with Unlimited Homestead Exemptions
Eric Helland (),
Dan P. Ly and
No 22031, NBER Working Papers from National Bureau of Economic Research, Inc
When faced with financial uncertainty, rational agents have incentives to take steps ex ante to reduce the probability (self-protection) or size (self-insurance) of a loss. However, in the case of liability risk, especially physician responses to malpractice risk, most empirical analyses have focused exclusively on measuring self-protection. This paper studies whether physicians invest in self-insurance by exploring how they respond to policies that allow them to lower the financial cost of malpractice liability. Specifically, we test whether physicians exploit provisions of bankruptcy laws and adjust the value of their home purchases to protect assets from liability claims exceeding their malpractice policy limits. We find that in states with unlimited “homestead” exceptions—provisions of state law that protect home equity when individuals file for bankruptcy—physicians invest 13% more in the value of their homes compared to what they would have invested in the absence of an exemption, whereas no such effect is true for other professionals of similar family income, family size, demographics, and city of residence. Additionally, the response of physicians to unlimited homestead exemptions is larger in areas with higher liability risk, where physicians would have greater incentive to insure against financial risks. Our findings suggest that physicians take financially costly decisions to protect themselves from uninsured malpractice risk, implying more generally that individuals self-insure against liability risk when insurance markets are incomplete.
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