PROPERTY PROVISIONS & CONTRACT LAW · 6 MIN READ

Interpreting the Policy: Ambiguity and Burdens

Because the insurer drafts every word, insurance policies are contracts of adhesion, and the interpretive rules lean toward the insured — but only within limits the exam expects you to know. The baseline is plain meaning: unambiguous language is enforced as written. When language is genuinely ambiguous — reasonably susceptible to more than one meaning — contra proferentem construes the ambiguity against the drafter. Ambiguity also opens the door to interpretive aids that are otherwise barred: under the parol evidence rule, a final integrated policy cannot be varied by prior or contemporaneous oral promises or preliminary documents, because the doctrine of merger folds all negotiations into the final writing. A producer's pre-issuance email promising replacement cost cannot override an unambiguous ACV schedule; the insured's remedy is a producer E&O claim, not coverage. Exceptions to parol evidence exist for fraud, mutual mistake supporting reformation, and ambiguity. The reasonable-expectations doctrine, where adopted, honors the objectively reasonable expectations of the insured even against fine print, and the illusory-coverage doctrine refuses readings that would make the promised protection meaningless. Coverage litigation runs on a three-step burden-shifting framework. First, the insured must prove the loss falls within the insuring agreement. Second, the burden shifts to the insurer to prove that an exclusion applies. Third, the burden shifts back to the insured to prove an exception or carve-back to that exclusion. Mapping any dispute onto these steps tells you instantly who must prove what — and it dovetails with the named-perils versus open-perils allocation on the property side. Two counting doctrines complete the interpretive toolkit. Trigger-of-coverage doctrine decides which policy periods respond to progressive injury: manifestation, exposure, injury-in-fact, and continuous-trigger theories compete, and the modern default for long-tail claims is the continuous trigger — every policy on the risk from first exposure through manifestation or the end of the injurious process is triggered. Number-of-occurrences doctrine decides how many per-occurrence limits apply: the majority cause test counts proximate causes, so one negligent act injuring three pedestrians is one occurrence subject to one per-occurrence limit, while the minority effect test would count each injury separately. Allocation across triggered policy periods then divides the loss among the responding insurers.