Moral hazard describes the change in behavior that occurs when an actor is insulated from the full consequences of its risk-taking. The concept originated in the insurance industry in the 19th century and was formalized in economics through the work of Kenneth Arrow ("Uncertainty and the Welfare Economics of Medical Care," 1963) and later through principal-agent theory developed by Bengt Holmström and others in the late 1970s.
The classic mechanism has three ingredients: (1) asymmetric information between two parties, (2) a contract or arrangement that shifts risk from one to the other, and (3) the inability of the risk-bearing party to fully monitor the behavior of the risk-taking party. A policyholder with comprehensive insurance may drive less carefully; a bank that expects a government bailout may extend riskier loans.
Moral hazard is central to several policy debates relevant to IR and political research:
- Financial regulation. The "too big to fail" critique of bank rescues during the 2008 global financial crisis — including the U.S. Troubled Asset Relief Program (TARP) — argued that bailouts encourage future excessive risk-taking. The Dodd-Frank Act of 2010 was designed in part to mitigate this.
- Sovereign debt and IMF lending. Critics, including the 2000 Meltzer Commission report to the U.S. Congress, argued that IMF emergency lending can create moral hazard by signaling that creditors and governments will be rescued.
- Humanitarian intervention. Alan Kuperman and others have argued that a credible "Responsibility to Protect" doctrine may create moral hazard by encouraging vulnerable groups to provoke state repression in hopes of triggering outside intervention.
- Climate and disaster policy. Subsidized flood insurance and post-disaster relief can encourage development in high-risk zones.
Standard remedies include deductibles and co-payments, performance-based contracts, conditionality (as in IMF programs), enhanced monitoring, and prudential regulation that forces risk-takers to retain "skin in the game."
Example
During the 2008 financial crisis, critics argued that the U.S. Treasury's bailout of AIG and major banks under TARP created moral hazard by signaling that systemically important firms would be rescued from the consequences of risky bets.
Frequently asked questions
Adverse selection occurs before a contract is signed, when hidden information about a party's type (e.g., risk profile) skews who participates. Moral hazard occurs after a contract is in place, when hidden actions of one party change because risk has been transferred.
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