Moral hazard: causes, examples, and ways to reduce risky behavior

Core characteristics

At its core, moral hazard involves asymmetric incentives and incomplete accountability. Two common features are:

• Hidden actions after a contract is in place: one party can alter behavior in ways the other party cannot easily observe.
• Shifted downside: losses or costs are transferred away from the actor to an insurer, lender, employer, taxpayer, or another party.

Economists often distinguish moral hazard from related problems such as adverse selection: adverse selection arises from hidden information before a contract, while moral hazard concerns hidden actions after it is formed.

History and development

The phrase grew out of discussions in insurance and banking and became part of mainstream economic vocabulary in the 20th century as scholars analyzed how contracts and safety nets affect behavior. Debates intensified with the expansion of social insurance programs and the growth of financial markets, where the potential for indirect risk-taking became more visible and economically important.

Common examples

Many everyday and institutional examples help make the idea concrete:

• Insurance policies: a policyholder who is insured against theft or accident may take less care—this classic example relates to insurance.
• Bank bailouts: lenders and investors may take on greater financial risk if they expect a government rescue.
• Employment and delegation: an employee given broad discretion may act differently when a manager cannot monitor all activities.

Ways to limit moral hazard

Policymakers and organizations use several tools to reduce moral hazard. Common approaches include contractual design, monitoring, and aligning incentives:

• Cost-sharing: deductibles, co-payments, and co-insurance make the insured party bear part of the loss.
• Performance-linked pay and collateral: create consequences for poor performance or risky choices.
• Monitoring and reporting: audits, oversight, and transparency reduce hidden actions.
• Regulation and market discipline: rules and reputational costs discourage excessive risk-taking.

Notable distinctions and policy trade-offs

Moral hazard often involves trade-offs. Measures that reduce risky behavior can also reduce beneficial risk-taking or create administrative costs. In addition, interventions that protect people or firms (for example, social insurance or lender-of-last-resort facilities) can be socially valuable even if they introduce some moral hazard. Policymakers therefore try to balance protection with incentives, using targeted design and careful oversight to limit unwanted side effects. For broader discussions of incentive effects and counterproductive incentives, see discussions of perverse incentives.