Excess and umbrella liability
Policies stacked above primary liability policies; excess merely extends them, while umbrella can also cover what they do not and drop down when they are exhausted.
Large companies buy their liability limits in several layers, above one or more primary policies: general liability, auto, employer's liability. Two forms of upper cover coexist, and their difference is often underestimated. A pure excess policy extends the underlying policies vertically: it responds to the same losses, on the same terms, once their limit is exhausted, and to nothing else. An umbrella policy, broader, adds two functions. It can cover losses the primary policies do not cover, above its own retention, making it a safety net against coverage gaps. And it can drop down to replace an underlying policy whose aggregate limit has been exhausted by other losses in the year. That dual function makes it more valuable to the insured and harder to underwrite, because it exposes the insurer to risks it did not see in the primary policies. In the United States, inflation in liability awards has sharply raised the price of these covers since 2019, the upper layers now being reached by judgments that used to spare them.
Textbook case: a US trucking company has a 1 million dollar auto policy and a 10 million umbrella. A fatal accident leads to an 8 million verdict: the auto policy pays its million, the umbrella the remaining 7 million. Had the verdict concerned a risk excluded by the auto policy but covered by the umbrella, the umbrella would have responded above its own retention.
umbrella liability, excess liability, umbrella policy
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