15.2 Commercial Umbrella and Excess Liability
Key Takeaways
- A commercial umbrella sits above primary policies (CGL, business auto, employers liability) and does three jobs: excess limits, drop-down for exhausted aggregates, and broader coverage over a self-insured retention (SIR).
- Umbrella coverage attaches only after underlying limits are exhausted or a covered loss falls outside underlying coverage; in the latter case the insured pays the SIR first.
- An excess liability policy is follow-form and provides ONLY higher limits - it never drops down to fill coverage gaps the way a true umbrella does.
- Required underlying limits (schedule of underlying insurance) must be maintained; if the insured lets a primary policy lapse or reduce, the umbrella treats the underlying limit as if still in force.
- The SIR functions as a deductible the insured pays out of pocket on losses not covered by underlying insurance, commonly $10,000 or $25,000.
Three Jobs of a Commercial Umbrella
A commercial umbrella is liability coverage that sits on top of a tower of primary policies. It does three distinct things, and the exam loves to test which one applies:
- Excess limits - pays after the underlying limit is used up on a loss both policies cover.
- Drop-down - if an underlying aggregate is exhausted by earlier claims, the umbrella drops down and becomes primary for the remaining policy period.
- Broader coverage - covers some claims the underlying policies exclude; here the insured first pays a self-insured retention (SIR), then the umbrella responds.
How Attachment Works
An umbrella attaches in two scenarios:
| Scenario | What the insured pays first | Then umbrella pays |
|---|---|---|
| Loss covered by underlying | Underlying limit (e.g., $1,000,000 CGL) | Excess above $1,000,000 |
| Loss NOT covered by underlying | Self-insured retention (SIR) | Excess above the SIR |
The schedule of underlying insurance on the declarations lists the primary policies and their required limits - typically CGL ($1M each occurrence / $2M aggregate), business auto ($1M CSL), and employers liability ($500K/$500K/$500K). The insured must maintain these. If a primary policy lapses, the umbrella still only pays as if the required underlying limit were collectible - the insured eats the gap.
Worked Layering Example
- Underlying CGL: $1,000,000 each occurrence.
- Commercial umbrella: $5,000,000 limit.
- Covered judgment: $3,500,000.
The CGL pays the first $1,000,000. The umbrella pays the remaining $2,500,000 (within its $5M limit). Total recovery $3,500,000; the insured pays $0 beyond the premium.
Drop-down example: The CGL has a $2,000,000 aggregate. Earlier claims this year already paid $2,000,000, exhausting the aggregate. A new $400,000 covered claim arrives. With the underlying aggregate gone, the umbrella drops down and pays the $400,000 (sometimes after a maintenance retention specified in the form).
Umbrella vs. Excess and the Drop-Down Feature
A commercial umbrella does three jobs: it provides excess limits above scheduled underlying policies (CGL, auto, employers liability), it drops down to act as primary after a small self-insured retention (SIR) for claims the underlying policies do not cover, and it can broaden coverage. A straight excess policy only adds limits and follows form — it covers nothing the underlying policy excludes and does not drop down.
| Feature | Umbrella | Excess |
|---|---|---|
| Adds limits above underlying | Yes | Yes |
| Drops down for gaps (after SIR) | Yes | No |
| Broader than underlying | Sometimes | Follows form |
Worked layering: a business carries a $1M CGL, a $5M umbrella, and a $10M excess. A $9M judgment is paid $1M by the CGL, then $5M by the umbrella, then $3M by the excess — exhausting lower layers before upper ones attach. If the claim were a type the CGL excluded but the umbrella covered, the umbrella would drop down and pay after the SIR, whereas the excess layer would not respond at all because it follows the CGL's form.
Underlying Limit Requirements and Maintenance
An umbrella requires the insured to maintain stated underlying limits on the scheduled primary policies (for example, $1M CGL occurrence and $1M auto liability). If the insured lets an underlying policy lapse or carries less than required, the umbrella treats the missing primary limit as if it were still in place — the insured, not the umbrella, absorbs the gap. This is the most common umbrella exam trap. A worked example: the umbrella requires $1M underlying CGL, but the insured lets the CGL lapse.
A $3M judgment hits; the umbrella pays only the amount above the $1M it assumed was there, leaving the insured personally responsible for the first $1M. The lesson is that an umbrella is not a substitute for primary coverage — it sits on top of it, and failing to maintain the required underlying limits shifts a large retained loss back to the insured.
An insured has a $1M CGL and a $4M commercial umbrella. A covered claim is for a peril EXCLUDED by the CGL but covered by the umbrella; the policy has a $25,000 SIR. The loss is $300,000. How does payment flow?
Umbrella vs. Excess Liability
The sharpest exam distinction is between a true umbrella and an excess (follow-form) liability policy.
- An excess liability policy is follow-form: it adopts the terms, conditions, and exclusions of the underlying policy and simply adds higher limits. It does NOT drop down to fill coverage gaps. If the underlying excludes something, the follow-form excess excludes it too.
- A true umbrella is broader: it provides excess limits AND can cover losses excluded by the underlying (subject to the SIR), and it can drop down when aggregates exhaust.
Memory hook: excess = more of the same; umbrella = more, plus broader, plus drop-down.
Common Exclusions and Eligible Risks
Despite their breadth, commercial umbrellas carry standard exclusions the exam expects you to recognize. Most umbrellas exclude workers' compensation and similar statutory benefits, employer's-liability claims below the required underlying limit, liability assumed under contract beyond an insured contract, professional liability (which needs E&O), pollution beyond narrow exceptions, and the insured's own product recall and damage to the insured's own work.
Umbrellas are sold to businesses of every size, from a small contractor stacking $1M over a $1M CGL to a large manufacturer building a tower of $25M or more across multiple excess layers from different insurers. Higher layers are usually follow-form excess sitting above a lead umbrella, so a claims professional must read the schedule of underlying insurance layer by layer to confirm each tier attaches correctly before the next responds.
What is the principal difference between a follow-form excess liability policy and a commercial umbrella?