Which situation best illustrates moral hazard?

A guarantee encourages a firm to take risks whose losses another party will cover. Exactly. Moral hazard concerns behavior altered by protection. Sorting into coverage is the separate problem of adverse selection.

Why can insurance increase the importance of supervision?

Protected depositors have less incentive to monitor bank risk. Exactly. Protection reduces one source of market discipline, so other safeguards matter more.

What changed on January 1, 1934?

Federal insurance began covering eligible deposits within its initial limit. Exactly. The guarantee protected covered deposits; it did not make banks incapable of failure.

From the archive · September 14, 2026

What protection changes

Can making people safer encourage someone else to take more risk?

01 · Word

Moral Hazard

Pronounced MOR-ul HAZ-urd

noun

The risk that protection from a loss encourages behavior that makes the loss more likely or more costly

Examples

The guarantee created moral hazard if lenders could keep gains while shifting losses elsewhere.
A deductible can reduce moral hazard by leaving the insured person responsible for part of a loss.

Origin

The term belongs to the vocabulary of insurance and economics. Moral does not require a verdict that someone is wicked. The relevant question is whether protection changes behavior by changing who bears the consequences. This differs from adverse selection, which concerns who enters an arrangement.

02 · Idea

The safety net changes the calculation

Suppose a lender receives the upside of a risky loan but expects someone else to absorb much of the downside. A loan that previously looked unattractive can begin to look worthwhile. The project's underlying risk has not improved. The lender's exposure to it has changed.

Deposit insurance creates a related tension. It protects covered depositors when a bank fails and reduces their reason to rush for the exit. But those depositors also have less reason to investigate the bank's risk-taking. Supervision and capital requirements help address the incentive problem that accompanies the protection.

Protection changes behavior before anyone makes a claim.

Ask who chooses the risk and who pays when it goes wrong.

Limits

Moral hazard does not show that insurance is a mistake. A system without protection has its own costs, including destructive runs. Nor does the concept prove a particular banker took excessive risk. That requires evidence about actual behavior.

03 · Moment

A guarantee arrives at the bank counter

United States, January 1, 1934; federal deposit insurance takes effect

After the banking crises of the Great Depression, federal deposit insurance began covering deposits at participating American banks. The initial limit was $2,500. A customer no longer had to treat every rumor about a covered bank as a possible threat to the whole of an insured balance.

Date: January 1, 1934
Initial coverage: Up to $2,500
Institution: FDIC

The caveat

The start of insurance illustrates the incentive tradeoff, not a controlled experiment measuring moral hazard. Banking conditions changed for many reasons during the recovery; a single before-and-after comparison cannot isolate the guarantee's effects.

The new guarantee changed the relationship between depositors and banks. It offered protection and confidence while making public oversight more consequential. The FDIC's historical record describes examinations of banks seeking admission before the system began. Insuring the public and examining the institutions were connected parts of the arrangement.

The connection

Insurance can reduce the cost of failure to decision-makers, changing incentives even while it provides valuable protection.