15.2 Commercial Umbrella and Excess Liability

Commercial Umbrella and Excess Liability

A commercial umbrella sits above an organization's primary liability policies (CGL, commercial auto, employers liability) and does three jobs: (1) it provides higher limits over the underlying coverage, (2) it drops down to pay when underlying limits are exhausted by other claims, and (3) it provides broader coverage for some claims the underlying policies do not cover - subject to a self-insured retention (SIR).

An excess liability policy, by contrast, is typically a "follow-form" layer that only raises limits; it follows the terms of the underlying policy and generally does not broaden coverage or drop down to fill gaps.

Underlying Limits and the SIR

The umbrella insurer requires scheduled underlying limits - minimum primary limits the insured must maintain (for example, CGL $1,000,000 per occurrence / $2,000,000 aggregate and auto $1,000,000 CSL). If the insured fails to maintain these, the umbrella still pays only as if the required underlying limits were in force; the insured absorbs the shortfall.

When a claim is not covered by any underlying policy but is covered by the umbrella, the insured must first pay a self-insured retention (commonly $10,000 or $25,000) before the umbrella responds. The SIR functions like a deductible for coverage the umbrella alone provides.

Three Functions in a Worked Scenario

Assume: CGL limit $1,000,000 per occurrence / $2,000,000 aggregate; umbrella limit $5,000,000; SIR $10,000.

• Higher limits: A covered lawsuit results in a $3,000,000 judgment. The CGL pays its $1,000,000; the umbrella pays the next $2,000,000.
• Drop-down: Earlier claims already exhausted the $2,000,000 CGL aggregate. A new covered claim of $400,000 arises. With underlying exhausted, the umbrella drops down and pays the $400,000 (no SIR, because the loss is covered by the underlying policy type).
• Broader coverage: A claim covered only by the umbrella (not the CGL) totals $250,000. The insured pays the $10,000 SIR, and the umbrella pays $240,000.

Maintenance Condition Pitfall

If the example insured had let its CGL lapse to $500,000 per occurrence instead of the required $1,000,000, and a $3,000,000 covered judgment occurred, the umbrella would still assume $1,000,000 of underlying was in place. It pays only $2,000,000 (excess of the required $1M). The insured personally absorbs the $500,000 gap between the actual $500,000 primary payment and the assumed $1,000,000 attachment point.

Umbrella vs. Excess Liability

Both provide high limits above primary policies, but they differ in breadth. An excess policy simply adds limits following the form of the underlying policy — same terms, just more money. An umbrella does that and can be broader than the underlying coverage, dropping down to cover claims the primary excludes (subject to a self-insured retention, SIR). The umbrella is the more valuable because it both raises limits and fills gaps.

How the Umbrella Attaches and the SIR

An umbrella sits above scheduled underlying policies (typically CGL, commercial auto, and employers liability) that must carry required minimum limits. The umbrella pays:

1. Excess over the underlying limit once it is exhausted; and
2. For claims covered by the umbrella but not the underlying policy, after the insured pays a self-insured retention (often $10,000-$25,000), functioning like a deductible.

Worked example: a $1,000,000 underlying CGL is exhausted by a $1,000,000 judgment, and total damages are $2,500,000. A $5,000,000 umbrella pays the remaining $1,500,000 as excess. If instead the claim is one the CGL excludes but the umbrella covers, the insured first pays the SIR and the umbrella pays the rest. If the insured failed to maintain the required underlying limits, the umbrella still pays only as if those limits were in place, leaving the insured to absorb the difference.

Maintaining Underlying Limits and the Drop-Down

An umbrella requires the insured to maintain scheduled underlying coverages at stated minimum limits (for example, $1,000,000 CGL, $1,000,000 auto, $500,000/$500,000/$500,000 employers liability). If the insured lets an underlying limit lapse or buys less than required, the umbrella pays only as if the required limit were in place — the insured absorbs the shortfall. The umbrella drops down to act as primary (after the SIR) only for claims the underlying does not cover at all, not to backfill an insured's failure to keep proper underlying limits.

Excess Follow-Form vs. True Umbrella

A pure excess follow-form policy mirrors the underlying terms exactly and simply provides more limit — it adds nothing the underlying did not cover. A true umbrella is broader: it can cover some claims the primary excludes, subject to the self-insured retention. The practical exam framing gives a business that needs both higher limits and gap-filling breadth and asks which to recommend — the umbrella, because excess only stretches existing terms while the umbrella also widens them.