15.2 Commercial Umbrella and Excess Liability

Commercial Umbrella and Excess Liability

A commercial umbrella provides a high layer of liability protection above scheduled underlying policies -- typically Commercial General Liability (CGL), Business Auto, and Employers Liability under workers compensation. It serves three functions: (1) it pays excess over the underlying limits once they exhaust, (2) it drops down to pay first-dollar (subject to a self-insured retention) for claims the underlying policies do not cover, and (3) it broadens coverage beyond the underlying forms. Excess liability, by contrast, only follows form over the underlying and does not broaden -- it adds limits but no new coverage.

Attachment Point, SIR, and the Drop-Down

The umbrella attaches at the top of the underlying limits -- the attachment point. For losses the underlying covers, the umbrella pays only the portion above that point. For losses the underlying does NOT cover but the umbrella does, the insured pays a self-insured retention (SIR) -- often $10,000 -- before the umbrella responds; this is the umbrella's own deductible for dropping down.

Insurers require scheduled underlying limits to remain in force. If the insured lets a required underlying limit lapse or buys less than scheduled, the umbrella treats the underlying as if it were still at the required limit -- the insured eats the gap.

Worked Layering Example

An insured carries a $1,000,000 CGL occurrence limit, a $1,000,000 umbrella, and a $5,000,000 excess layer above the umbrella, with a $10,000 SIR.

For the $1,500,000 claim, CGL pays its $1,000,000 limit and the umbrella pays the remaining $500,000. For the $300,000 non-CGL claim, the insured pays the $10,000 SIR and the umbrella drops down to pay $290,000. The $5,000,000 excess layer only engages once the umbrella's $1,000,000 is exhausted.

Common Traps

• Umbrellas are not standardized -- each insurer drafts its own form, so coverage grants and exclusions vary widely. Read the form; do not assume CGL definitions carry over.
• The umbrella may exclude what the underlying covers (e.g., certain pollution or professional exposures), creating a gap precisely where the insured expected the broadest protection.
• A defense costs question: most umbrellas pay defense in addition to the limit when they are the only responding policy, but provide no duty to defend when the underlying is still defending.
• Maintenance of underlying is a condition, not a suggestion -- failure to keep required limits shifts the gap to the insured.

Umbrella vs. Excess — A Tested Distinction

Both sit above primary policies, but they differ in breadth. A true umbrella does two things: (1) provides excess limits over scheduled underlying policies (CGL, auto, employers liability), and (2) provides broader, drop-down coverage for some claims not covered by the underlying policy, subject to a self-insured retention (SIR). A straight excess policy only adds limits over the underlying and follows form — it covers nothing the underlying does not. So an umbrella can drop down to act as primary for a gap; an excess policy cannot.

Attachment Point, SIR, and Drop-Down

The umbrella attaches at the underlying limit (the attachment point) for risks the underlying covers. For a loss the umbrella covers but the underlying excludes, the umbrella pays after the insured satisfies the SIR (a deductible-like retention, e.g., $10,000). The umbrella also requires the insured to maintain the scheduled underlying limits; if the insured lets underlying coverage lapse or carries less than required, the umbrella pays only as if the proper underlying were in place — leaving the insured to fund the gap.

Worked Layering Example

Underlying CGL $1,000,000 each occurrence; umbrella $5,000,000; SIR $10,000. A covered liability judgment is $4,000,000 for a claim the CGL covers.

• CGL pays its $1,000,000 limit.
• Umbrella pays the excess: $4,000,000 − $1,000,000 = $3,000,000 (within its $5M limit).
• SIR does not apply because the underlying did cover the claim.

Now a $200,000 claim the CGL excludes but the umbrella covers: the underlying pays $0, the insured pays the $10,000 SIR, and the umbrella pays $190,000 by dropping down.

Common Traps

The exam tests that an umbrella requires scheduled underlying limits be maintained, that the SIR applies only to drop-down (non-underlying) claims, and that excess (follow-form) policies never broaden coverage. A stem describing a claim excluded by every underlying policy but paid (after a retention) by the higher policy identifies a true umbrella, not straight excess.

Following Form vs. Self-Contained Umbrellas

Umbrellas vary in how they relate to the underlying. A following-form umbrella adopts the terms and conditions of the underlying policy, so a claim excluded below is excluded above. A self-contained (stand-alone) umbrella has its own insuring agreement and exclusions, which can be broader or narrower than the underlying — this is what creates true drop-down for gaps (subject to the SIR). The exam tests that a self-contained umbrella can pay where the underlying excludes, while a pure following-form policy cannot broaden coverage.

Maintenance Warranty and Exhaustion

Umbrella coverage is conditioned on the insured maintaining the scheduled underlying limits. If a primary policy's aggregate is exhausted by other claims, a quality umbrella will drop down to act as primary for subsequent covered claims; but if the insured simply failed to buy the required underlying limit, the umbrella pays only the excess above the limit that should have existed, leaving the insured to fund the difference. Distinguishing exhaustion (umbrella drops down) from failure to maintain (insured eats the gap) is a recurring umbrella trap.