15.2 Commercial Umbrella and Excess Liability

The Three Jobs of a Commercial Umbrella

A commercial umbrella policy is not simply "more insurance." The exam tests its three distinct functions, and confusing them is the most common error.

Quick Answer: A true umbrella (1) adds limits above underlying policies, (2) drops down when underlying aggregates exhaust, and (3) covers some claims the underlying policies exclude — subject to a Self-Insured Retention.

Underlying Policies and Minimum Limits

An umbrella sits on a schedule of underlying insurance. Insurers require minimum underlying limits before the umbrella will attach — typically:

If the insured lets underlying coverage lapse or carries less than required, the umbrella treats the missing layer as self-insured — the insured fills the gap, not the umbrella.

Self-Insured Retention (SIR) vs. Deductible

When the umbrella provides broader (true umbrella) coverage for a claim the underlying policy does not cover at all, the insured must first satisfy the Self-Insured Retention — commonly $10,000 to $25,000. The SIR is not a deductible:

• A deductible is subtracted from the insurer's payment within a policy that is already responding.
• An SIR is an amount the insured pays before the umbrella's duty to pay and (often) duty to defend begins, on a gap claim where no underlying insurance applies.

Umbrella vs. Excess Liability — The Key Distinction

Candidates routinely treat "umbrella" and "excess" as synonyms. They are not.

A follow-form excess policy simply stacks more limit on top of the underlying using the same terms and exclusions. If the underlying excludes liquor liability, so does the follow-form excess. A true umbrella may cover that liquor claim (subject to the SIR).

Worked Example — Excess Limits

A contractor has a $1,000,000 per-occurrence CGL and a $5,000,000 umbrella. A covered bodily-injury judgment is $3,500,000.

• CGL pays its $1,000,000 limit.
• The umbrella pays the excess: $3,500,000 − $1,000,000 = $2,500,000.
• Total paid: $3,500,000; umbrella limit remaining: $5,000,000 − $2,500,000 = $2,500,000.

Worked Example — Drop-Down

The same CGL has a $2,000,000 aggregate. Earlier claims this year already consumed the full $2,000,000 aggregate. A new covered claim of $400,000 arises, and the SIR is $10,000.

• The CGL aggregate is exhausted — it pays nothing.
• The umbrella drops down: the insured pays the $10,000 SIR, and the umbrella pays the remaining $390,000.

Worked Example — Broader Coverage (Gap Claim)

A covered claim of $250,000 falls under a peril the CGL excludes but the umbrella covers. SIR is $25,000.

• No underlying insurance applies, so the insured pays the $25,000 SIR.
• The umbrella pays the remaining $225,000.

Common Exam Traps

• Umbrella vs. excess: only a true umbrella broadens coverage and drops down for gap claims; follow-form excess never broadens.
• SIR is not a deductible — it is paid before the umbrella responds on a gap claim.
• Failure to maintain underlying limits makes the insured a self-insurer for the missing layer; the umbrella does not silently fill it.
• Drop-down is triggered by aggregate exhaustion, not by a single large loss exceeding the per-occurrence limit.

How the Umbrella Sits Above Primary Coverage

A commercial umbrella does three jobs, which the exam tests as a set:

1. Excess — provides additional limits above scheduled underlying policies (CGL, auto, employers liability) once those are exhausted.
2. Drop-down (broader) coverage — for some losses covered by the umbrella but not the underlying policy, the umbrella drops down to pay after a self-insured retention (SIR) — typically $10,000 — acts like a deductible.
3. Replenishes the aggregate when underlying aggregates erode.

The insured must maintain the scheduled underlying limits; if it fails to, the umbrella pays only as if those limits were in force, leaving the insured to absorb the gap. Trap: the SIR applies only where the umbrella is broader than the underlying, not where it is merely excess.

Umbrella vs. Excess, with a Worked Layering Example

An excess policy simply adds limits on top of an underlying policy following the same terms (follow form). An umbrella both adds limits and broadens coverage (drop-down with SIR).

Worked example: a business has a CGL with a $1,000,000 each-occurrence limit and a $5,000,000 commercial umbrella over it. A liability judgment is $4,000,000. The CGL pays its $1,000,000 limit; the umbrella pays the next $3,000,000 as excess. If instead the loss were a type covered by the umbrella but excluded by the CGL (say, certain personal-injury offenses the CGL omitted), the umbrella would drop down, the insured would pay the $10,000 SIR, and the umbrella would pay the rest up to $5,000,000. Trap: the umbrella never lowers the insured's duty to keep required underlying limits in place.