1.2 Insurable Interest, Indemnity, and Adverse Selection

Three doctrines keep insurance from becoming gambling and keep the risk pool solvent: insurable interest, the principle of indemnity, and the insurer's defense against adverse selection.

Insurable Interest

Insurable interest means the policyowner must stand to suffer a genuine financial or emotional loss if the insured event occurs. Without it, a contract is an unenforceable wager.

The timing rule differs by line:

• Life insurance: insurable interest must exist only at the time of application (policy inception) — NOT at the time of death. A wife insures her husband; if they later divorce, the policy can remain valid.
• Property/health: interest must exist at the time of loss.

Persons presumed to have insurable interest in another's life include spouses, parents/children, and a business in a key employee or partner.

The Principle of Indemnity

Indemnity means a policy restores the insured to approximately the same financial position held before the loss — no better, no worse. The insured should not profit from a loss.

Indemnity governs most health and property contracts (they reimburse actual expenses). Pure life insurance is technically a valued contract, not an indemnity contract: it pays a stated face amount regardless of "actual" loss, because a human life has no fixed dollar value. Still, the spirit of indemnity (insurable interest, no wagering) applies.

Worked numeric: coinsurance in major medical

Indemnity health plans share cost through deductibles and coinsurance. Suppose a plan has a $1,000 deductible and 80/20 coinsurance with a $5,000 out-of-pocket maximum. On a $20,000 covered bill:

• Insured pays the $1,000 deductible first.
• Of the remaining $19,000, the insured's 20% share would be $3,800.
• $1,000 + $3,800 = $4,800, which is under the $5,000 cap, so the insured pays $4,800 and the insurer pays $15,200.

The insured never profits; cost-sharing also curbs overuse.

Adverse Selection

Adverse selection is the tendency of those with a higher-than-average probability of loss to seek or keep insurance more aggressively than average risks. Sick people want health coverage; high-risk people want more life coverage.

Left unchecked, adverse selection skews the pool toward bad risks, drives claims above expectations, and forces premium increases that chase good risks away — a "death spiral."

Insurers counter adverse selection with:

• Underwriting — classifying and selecting risks; declining or rating up high risks.
• Medical exams, attending-physician statements, and the application as evidence.
• Exclusions, waiting/elimination periods, and pre-existing-condition provisions.
• Premium rating by age, health, occupation, and tobacco use.

Group insurance fights adverse selection through mandatory or high participation requirements so the healthy enroll alongside the sick.

Putting the Three Together

Scenario: A stranger tries to buy a $1 million life policy on a wealthy celebrity he has never met. The application is rejected for lack of insurable interest — the stranger suffers no financial loss at the celebrity's death, so the contract would be a prohibited wager.

STOLI, Wagering, and Why Interest Matters

The insurable-interest rule blocks Stranger-Originated Life Insurance (STOLI) — arrangements where investors with no relationship to the insured fund a policy intending to collect at death. These are void as illegal wagers and are an exam favorite.

Legitimate business uses of insurable interest include:

• Key-person insurance — a business insures a vital employee whose death would cause financial loss.
• Buy-sell / cross-purchase agreements — partners insure each other to fund a buyout of a deceased owner's share.
• Creditor interest — a lender may insure a debtor up to the amount of the loan.

In each case the policyowner can show a real, quantifiable loss, satisfying the doctrine. Charity, friendship, or curiosity does not create insurable interest in another person's life.

Who Has Insurable Interest in a Life

Insurable interest in a life exists where the applicant would suffer a genuine financial or emotional loss from the insured's death. Recognized relationships include:

A creditor may insure a debtor only up to the loan balance, not for an arbitrary windfall. A casual acquaintance or a stranger has no insurable interest - which is exactly what prevents wagering on strangers' lives.

Timing rule, again: In LIFE insurance, insurable interest must exist only at policy inception. In PROPERTY insurance, by contrast, it must exist at the time of loss. Mixing up these timing rules is a classic distractor.

Indemnity, Adverse Selection, and How Insurers Fight Back

Principle of Indemnity

The principle of indemnity says a person should be restored to their pre-loss financial position - no better, no worse. It governs health and property insurance (you cannot profit from a claim). Life insurance is a valued contract, not strictly indemnity - the face amount is paid regardless of 'actual' loss, because a human life cannot be precisely valued.

Adverse Selection

Adverse selection is the tendency of those with the highest probability of loss (poor health, hazardous habits) to seek insurance most eagerly. Left unchecked it would skew the risk pool and force premiums up. Insurers counter it with:

• Underwriting - screening applicants and classifying risk.
• Exclusions and waiting periods - e.g., pre-existing condition limits.
• Rate classes - charging substandard risks more.

Worked Coinsurance (Indemnity in Health)

A plan has a $1,000 deductible, 80/20 coinsurance, and a $5,000 out-of-pocket max. On a $20,000 covered claim:

Deductible                $1,000
Remaining                $19,000
Insured's 20% coinsurance $3,800
Deductible + coinsurance  $4,800  (below the $5,000 cap)
Insured pays              $4,800

The insured pays $4,800 - indemnity ensures the plan covers the rest but the insured cannot profit.