15.2 Commercial Umbrella and Excess Liability
Key Takeaways
- A commercial umbrella sits above scheduled underlying policies (CGL, business auto, employers liability) and provides three functions: excess limits, drop-down for gaps, and broadened coverage where the umbrella is broader than the underlying
- The umbrella requires the insured to maintain stated underlying limits; if the insured fails to keep them, the insurer pays only as if those limits were in place (the SIR/maintenance rule)
- A self-insured retention (SIR) applies when the umbrella covers a loss the underlying policy does not - the insured pays the SIR before the umbrella responds, distinct from a deductible
- Excess liability follow-form policies simply add limits on the same terms as the underlying and do NOT drop down or broaden coverage like a true umbrella
- Defense costs under an umbrella are typically paid in addition to the limit when the underlying is exhausted, but the umbrella usually does not duplicate ongoing underlying defense
The Three Jobs of an Umbrella
A commercial umbrella is the catastrophe layer of a business's liability program. It performs three distinct functions, and the exam tests all three.
Quick Answer: A commercial umbrella (1) provides excess limits over underlying policies, (2) drops down to pay when an underlying aggregate is exhausted, and (3) broadens coverage for losses the underlying does not cover, subject to a self-insured retention.
| Function | What Happens | Trigger |
|---|---|---|
| Excess limits | Pays above the underlying limit | Underlying limit is reached on a covered claim |
| Drop-down | Becomes primary for the rest of the term | Underlying aggregate is exhausted by prior losses |
| Broadened coverage | Covers a loss the underlying excludes | Gap exists; insured pays the SIR first |
The drop-down feature is critical: if the CGL general aggregate is exhausted mid-term by earlier claims, the umbrella drops down and acts as primary for new covered claims for the remainder of the period.
Required Underlying Limits and the Maintenance Rule
The umbrella's declarations list a schedule of underlying insurance with required limits - for example, CGL $1,000,000 per occurrence / $2,000,000 aggregate, business auto $1,000,000 CSL, and employers liability $500,000. The insured must maintain these limits.
Maintenance rule: If the insured lets an underlying limit lapse or buys less than required, the umbrella pays only as if the required underlying were still in force. The insured personally absorbs the difference.
Example: The umbrella requires $1,000,000 underlying auto, but the insured carries only $500,000. A $2,000,000 auto loss occurs. The umbrella pays the excess above the required $1,000,000 (so $1,000,000), the insured's actual auto policy pays $500,000, and the insured personally absorbs the $500,000 gap between actual and required underlying.
Self-Insured Retention (SIR) vs. Deductible
When the umbrella covers a loss the underlying does not (a coverage gap, not an exhausted limit), no underlying policy pays first. Instead the insured pays a self-insured retention - often $10,000 or $25,000 - before the umbrella responds.
| Feature | Self-Insured Retention | Deductible |
|---|---|---|
| Who handles the claim within the amount | The insured | The insurer (then bills back) |
| Counts toward the limit | Typically no | Sometimes |
| Where it applies | Gaps the underlying does not cover | Within the policy's own coverage |
The distinction matters: with an SIR, the insured is responsible for managing and paying claims up to the retention; the umbrella sits above it only for genuinely covered, broadened losses.
Umbrella vs. Follow-Form Excess
Candidates routinely confuse a true umbrella with a follow-form excess policy.
- A true umbrella can drop down and broaden coverage (with an SIR). It may cover something the CGL excludes.
- A follow-form excess policy simply adds more limit on identical terms - it follows the underlying form's grants and exclusions exactly. If the underlying excludes it, the excess excludes it too. No drop-down, no broadening.
Defense Costs and Stacking
Under most commercial umbrellas, defense is provided once the underlying limits are exhausted, and defense costs are usually paid in addition to the umbrella limit at that point. While underlying coverage remains, the primary insurer defends; the umbrella does not duplicate that duty.
Worked Layering Example
A contractor has CGL with a $1,000,000 per-occurrence limit and a $5,000,000 umbrella. A jobsite accident produces a $4,500,000 judgment against the insured.
- CGL pays its $1,000,000 per-occurrence limit.
- The umbrella pays the next $3,500,000 as excess.
- Total available is $6,000,000; the $4,500,000 judgment is fully covered, with $1,500,000 of umbrella limit unused.
Had the CGL aggregate already been exhausted by prior claims, the umbrella would drop down and become primary for this claim, subject to its own terms.
Common Exam Traps
- Drop-down is not automatic for every gap - it applies to exhausted aggregates; broadened coverage of an excluded loss requires paying the SIR.
- SIR is not a deductible - the insured, not the insurer, administers claims within the SIR.
- Follow-form excess never broadens - if you see drop-down or coverage of an underlying-excluded loss, that is an umbrella, not a follow-form excess.
Umbrella vs. Excess: A Key Distinction
Both sit above primary policies, but the exam draws a sharp line:
| Feature | Umbrella | Excess (following form) |
|---|---|---|
| Breadth | Can be broader than the underlying (drop-down coverage) | Mirrors the underlying terms exactly |
| Drop-down | Pays after a self-insured retention (SIR) for claims the primary excludes | Does not broaden |
| Defense | May provide defense for drop-down claims | Follows the primary |
An umbrella can cover a loss excluded by the primary, requiring the insured to pay a self-insured retention before the umbrella drops down. A true excess (following-form) policy simply adds limits on the same terms.
How the Layers Stack
Umbrellas sit above scheduled underlying limits the insured must maintain — typically primary CGL, commercial auto, and employers liability. If the insured fails to keep the required underlying limits in force, the umbrella responds only as if those limits existed, leaving the insured to fund the gap.
Worked Layering Scenario
A business carries $1,000,000 primary CGL and a $5,000,000 umbrella over it. A covered judgment is $4,000,000: the primary pays its $1,000,000, and the umbrella pays the remaining $3,000,000. Now suppose the loss is a type the primary excludes but the umbrella covers: the insured first pays the self-insured retention (say $10,000), then the umbrella drops down to pay the loss. The exam uses both scenarios — excess-of-primary and drop-down-over-SIR — to test whether candidates understand that an umbrella adds limits and can broaden coverage, while a following-form excess only adds limits.
An insured's commercial umbrella requires $1,000,000 of underlying auto liability, but the insured actually carries only $500,000. A covered $2,500,000 auto liability judgment results. How does the umbrella respond?
Which statement best distinguishes a true commercial umbrella from a follow-form excess liability policy?