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Aleatory Contracts and Contracts of Adhesion

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Key Takeaways
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Now that we understand what makes an insurance contract valid, let's explore what makes insurance contracts unique. While all valid contracts must have the CLOC elements, insurance contracts have additional special features that set them apart from ordinary business agreements. These special characteristics reflect the unique relationship between insurers and their customers, and they directly affect how insurance policies work in practice.

Aleatory Contract

An insurance contract is an aleatory contract because one party may recover more in value than has been paid. This difference in benefits occurs because they depend on uncertain future events, such as illness or death. In other words, aleatory contracts involve unequal exchanges. The value of the policy owner's potential benefit (a claim payment) is usually higher than the premium paid to the insurer. Both insurance and gambling contracts are typically considered aleatory contracts.

Think of an aleatory contract like a "what if" agreement. Here's how it works:

  • What you pay: You pay a set amount (premium) regularly. Example: $100 per month for car insurance.
  • What you might get: You might get nothing if nothing goes wrong, or you might get a lot more than you paid if something does go wrong. Example: After paying $1,200 in premiums, you could get $25,000 for car repairs.

"Aleatory" means depending on chance. You don't know if you'll need to use the insurance, and the insurance company doesn't know if they'll need to pay. Consider these real-world examples of aleatory contracts:

  • A policyholder pays $1,200 annually for a $500,000 life insurance policy but dies after paying only two premiums ($2,400 total). The beneficiary receives the full $500,000.
  • For 20 years, a person pays $800 annually for disability insurance ($16,000 total) but never becomes disabled and receives no benefits.
  • A homeowner pays $1,500 annually for homeowners' insurance for 15 years ($22,500 total) and files one claim for $75,000 to cover a major loss.

Contract of Adhesion

Insurance policies are contracts of adhesion because they are prepared by only one party — the insurance company. When buying insurance, the applicant can't change what the policy says. The insurance company writes all the rules. The applicant can either take the policy as it is or leave it and choose something else. A policy can also be described as a contract of adhesion because it can only be modified by the insurance company.

Ambiguities in a Contract of Adhesion

Ambiguities or confusing language in a contract can result in differing legal interpretations and conflicts. In any contract of adhesion, the party that dictates the contract terms is responsible for ensuring that all terms are clear and free of ambiguity. The insurance company has this responsibility when it comes to its insurance policies. When policy language is unclear:

  • The court looks at the disputed terms
  • The insurance company is responsible for clarity
  • The court typically favors the policyholder

Here's why ambiguities matter: an auto policy states, "coverage excludes damage from acts of nature" without defining "acts of nature." A fallen branch damages the insured's car during a storm. The insurer claims this is an act of nature and denies coverage. The insured argues that damage from fallen branches should be covered since "acts of nature" is not clearly defined. The court would likely rule in favor of the insured because the insurer wrote the contract, and the term is ambiguous because reasonable people might interpret it differently.

Doctrine of Reasonable Expectations

The doctrine of reasonable expectations means courts look at what an average person would expect from the policy. If the policy promises something different from what it delivers, the court supports the consumer's reasonable understanding. The purpose of this doctrine is to correct the advantage gained by the party that prepared the contract. Because of this doctrine, an insurer must obtain state insurance department approval before it can use or modify a policy form.

Exam Tip

The reasonable expectation is a legal principle that reinforces the rule that ambiguities in insurance contracts should be interpreted in favor of the policyholder. It also states that an insured is entitled to coverage under a policy that a sensible and prudent person would expect it to provide.


Key Takeaways
  • An insurance contract is aleatory: the values exchanged are unequal because they depend on an uncertain future event, and either party may end up on the "losing" side of the exchange.
  • An insurance policy is a contract of adhesion: it is written entirely by the insurer, and the applicant may only accept or reject it as written.
  • Because the insurer writes the contract, any ambiguous language is interpreted in favor of the policyholder.
  • The doctrine of reasonable expectations entitles an insured to the coverage a sensible, prudent person would expect the policy to provide, even if the literal wording is unclear.