15.2 Commercial Umbrella and Excess Liability

Why Umbrella and Excess Exist

Primary liability policies (CGL, commercial auto, employers liability) carry finite limits - commonly $1,000,000 per occurrence. A single catastrophic judgment can exceed those limits and bankrupt a business. Commercial umbrella and excess liability policies sit above the primary layer to provide high-limit protection, often $5 million, $10 million, or more.

Two distinct products are frequently confused:

The key distinction: an umbrella may be broader than the policies beneath it and can drop down to pay claims the underlying excludes, after the insured satisfies a self-insured retention (SIR), typically $10,000 to $25,000. A pure excess (follow-form) policy only pays after the underlying limit is exhausted and covers nothing the underlying does not.

Attachment Points, Required Underlying, and SIR

An umbrella schedules the required underlying limits it sits above. If the insured fails to keep those limits in force, the umbrella treats the gap as if the underlying were still collectible - the insured self-insures the difference.

Worked layering example. A contractor carries CGL at $1,000,000 per occurrence and a $5,000,000 umbrella. A judgment of $4,200,000 is entered for a covered occurrence.

• Primary CGL pays its $1,000,000 limit.
• Umbrella pays the remaining $3,200,000 (within its $5M limit).
• Insured out-of-pocket: $0 (no SIR because the loss was covered by the underlying).

Drop-down example. Suppose a $300,000 claim is covered by the umbrella but excluded by the CGL. The umbrella drops down, but the insured first pays the $10,000 SIR; the umbrella then pays $290,000.

• Trap: Umbrella limits are usually aggregate as well as per-occurrence; once the aggregate erodes, the high limit is gone for the policy period.
• Trap: An umbrella does NOT automatically reinstate or 'restore' an exhausted underlying aggregate unless the policy says so; gaps create a self-insured layer.
• Trap: Many umbrellas exclude the same things as the underlying (pollution, professional liability, aircraft) - buyers needing those must schedule them or buy separate coverage.

Multiple Layers, Maintenance, and Defense

Large accounts stack coverage in layers: a $1,000,000 primary, a $5,000,000 first-layer umbrella, and a $10,000,000 second-layer excess sitting on top of the umbrella. Each higher layer is a follow-form excess that attaches only when the layer beneath is exhausted. If a $9,000,000 judgment is entered against the account above, the primary pays $1,000,000, the umbrella pays its $5,000,000, and the excess pays the remaining $3,000,000, leaving $7,000,000 of the excess limit intact for the rest of the term.

Umbrella policies impose a maintenance condition: the insured must keep the scheduled underlying limits in full force and effect. If a CGL aggregate is eroded by prior claims and not reinstated, the umbrella still treats the underlying as collectible at its original limit, so the insured personally funds the eroded layer. This is why a CGL with a $2,000,000 general aggregate paired with a $1,000,000 required-underlying umbrella schedule can create a surprise self-insured gap mid-year.

Defense handling differs by product. An umbrella that drops down to a non-underlying claim usually provides defense for that claim after the SIR. When the umbrella sits purely excess of a collectible underlying, the primary insurer defends and the umbrella owes no duty to defend until the underlying limit is exhausted, at which point the umbrella may assume the defense. Excess (follow-form) policies typically owe no independent duty to defend at all and pay defense only as the underlying form would.

Exam-favorite distinctions: an umbrella can be broader than the underlying and can drop down subject to the SIR, while an excess policy is never broader and never drops down. The SIR is the insured's retained layer for drop-down losses, not a deductible the insurer advances. And per-occurrence versus aggregate erosion matters: once a high aggregate is consumed by multiple losses, no further coverage exists no matter how large the per-occurrence limit looked.

Key Takeaways

Umbrella and excess policies sit above primary limits to absorb catastrophic judgments. The umbrella may be broader, can drop down after a self-insured retention, and may provide defense for drop-down claims; the follow-form excess only pays after the underlying is exhausted and never broadens coverage. Watch maintenance conditions, aggregate erosion, and layered attachment points, because each is a routine exam trap.

Exam drill: an account carries a $1,000,000 CGL, a $4,000,000 umbrella with a $10,000 SIR, and a $5,000,000 follow-form excess. A covered occurrence yields an $8,500,000 judgment. The CGL pays $1,000,000, the umbrella pays its $4,000,000, and the excess pays the remaining $3,500,000 with no SIR (the SIR only applies to drop-down claims the underlying does not cover).

Had the same loss instead been a pollution claim excluded by the CGL but covered by the umbrella, the insured would first pay the $10,000 SIR and the umbrella would respond from dollar one above it. Recognizing when the SIR applies and which layer attaches is the heart of these questions.