15.2 Commercial Umbrella and Excess Liability
Key Takeaways
- A commercial umbrella does three things: provides excess limits over scheduled underlying policies, drops down when underlying aggregates are exhausted, and broadens coverage for some claims the underlying excludes (subject to a self-insured retention)
- True excess liability only adds limits and follows the underlying form exactly; it does not broaden coverage or drop down for new exposures
- The umbrella requires the insured to maintain scheduled underlying limits (e.g., $1M CGL occurrence, $1M/$2M auto, $1M employers liability); failure to maintain them leaves the insured responsible for the gap
- When the umbrella covers a loss the underlying policy excludes, the insured pays a self-insured retention (SIR), often $10,000, before the umbrella responds
- Umbrellas typically exclude what the underlying excludes plus their own list (e.g., professional liability, owned-aircraft, certain pollution)
The Three Jobs of a Commercial Umbrella
A commercial umbrella is the catastrophe layer above a business's primary liability policies. It performs three distinct functions that the exam expects you to separate:
- Excess limits - pays above the underlying limit. If the CGL pays its $1,000,000 and the judgment is $1,500,000, the umbrella pays the next $500,000.
- Drop-down for exhausted aggregates - if the underlying aggregate has been used up by prior claims, the umbrella drops down and acts as primary for new occurrences.
- Broadened coverage - covers some claims the underlying excludes entirely. Here the insured first pays a self-insured retention (SIR) (commonly $10,000) because there is no underlying limit to satisfy.
Quick Answer: An umbrella adds limits, fills in when aggregates erode, and can cover a few things the underlying does not (after an SIR). Plain excess liability does only the first.
Umbrella vs. Excess Liability
| Feature | Commercial Umbrella | Excess Liability |
|---|---|---|
| Adds limits over underlying | Yes | Yes |
| Drops down when aggregate exhausted | Yes | Usually no |
| Broadens coverage (covers some underlying exclusions) | Yes, subject to SIR | No - follows form |
| Has its own insuring agreement | Yes | No - mirrors underlying |
Trap: Candidates equate the two. "Excess" simply stacks limits on top of the underlying and follows form (mirrors its terms). The umbrella is broader and stands on its own coverage grant.
Underlying Requirements, SIR, and a Worked Layering Example
The umbrella is sold on the assumption that scheduled underlying coverage is kept in force. A typical schedule of required underlying limits is:
| Underlying Policy | Required Limit |
|---|---|
| Commercial General Liability | $1,000,000 per occurrence / $2,000,000 aggregate |
| Commercial Auto Liability | $1,000,000 combined single limit |
| Employers Liability (WC Part Two) | $500,000 or $1,000,000 |
Maintenance clause trap: If the insured fails to maintain these limits (lets a policy lapse or buys lower limits), the umbrella treats the gap as if the required underlying were still in place - the insured, not the umbrella, eats the difference.
Worked Layering Example
A contractor carries a $1,000,000 CGL occurrence limit and a $5,000,000 umbrella with a $10,000 SIR for non-underlying claims. Consider two losses:
- Loss A - $3,000,000 covered by the CGL: CGL pays its $1,000,000; the umbrella pays the next $2,000,000 as excess. No SIR applies because the underlying responded.
- Loss B - $250,000 from a claim the CGL excludes but the umbrella covers: there is no underlying limit, so the insured pays the $10,000 SIR, then the umbrella pays the remaining $240,000.
Common Umbrella Exclusions
Even a broad umbrella excludes:
- Professional liability / E&O (needs a separate policy)
- Owned aircraft and most watercraft above a size threshold
- Workers compensation statutory benefits (it sits over employers liability, not the WC benefits)
- Intentional/expected injury, and most pollution (mirrors underlying)
Remember: the umbrella inherits the underlying's exclusions plus its own list. It is broader than excess, but it is not all-risk liability.
How the Layers Stack
Picture liability coverage as a vertical tower. The primary policy (CGL, auto) is the first floor up to its limit; the umbrella is the next floor; large risks add excess policies above the umbrella. Each higher layer attaches only after the layer beneath it is exhausted (its attachment point).
| Layer | Example Limit | Attaches After |
|---|---|---|
| Primary CGL | $1,000,000 | First dollar (after deductible) |
| Umbrella | $5,000,000 | Primary exhausted ($1M) |
| First excess | $10,000,000 | Umbrella exhausted ($6M total) |
Worked Tower Example: A $9,000,000 judgment hits a tower of $1M primary + $5M umbrella + $10M excess. The primary pays $1M, the umbrella pays its full $5M, and the excess layer pays the remaining $3M. Total paid: $9M, with $7M of excess limit still unused.
Concurrency and Following Form
Umbrella underwriters care about concurrency - the umbrella's terms should not be broader at the bottom than the required underlying, or gaps appear. Excess policies are usually following-form, meaning they adopt the underlying policy's definitions and exclusions verbatim; a true umbrella has its own insuring agreement and may grant coverage the underlying lacks.
Personal vs. Commercial Umbrella
Do not confuse the two. A personal umbrella sits over a Homeowners and Personal Auto policy for individuals; a commercial umbrella sits over CGL, commercial auto, and employers liability for businesses. Both share the drop-down and SIR mechanics, but the required underlying schedules and exclusions differ. On the exam, the presence of employers liability as required underlying is a tell that you are dealing with a commercial umbrella.
Defense Costs and Aggregate Limits
Most commercial umbrellas pay defense costs in addition to the limit when they sit purely as excess (the underlying insurer typically defends). However, when the umbrella drops down or covers a non-underlying claim through the SIR, the umbrella usually assumes the duty to defend and may pay defense within or outside the limit depending on form wording. Umbrellas carry their own aggregate limit, and products-completed-operations claims often erode a separate aggregate just as on the CGL.
Why Businesses Buy High Limits
A single catastrophic loss - a multi-vehicle commercial-auto accident, a customer's traumatic injury, a fire spreading to neighboring property - can produce a judgment far above a $1M primary limit. For a modest premium relative to the primary, a $5M or $10M umbrella protects business assets and satisfies contractual requirements: landlords, lenders, and project owners frequently demand evidence of umbrella limits before signing.
Exam tip: If a scenario shows a judgment below the primary limit, the umbrella pays nothing - it is excess and only responds after the underlying limit is reached or its aggregate is exhausted. Watch for distractor answers that have the umbrella paying when the primary limit was never breached.
A business carries a $1,000,000 CGL occurrence limit and a $5,000,000 commercial umbrella with a $10,000 self-insured retention. A liability claim that the CGL specifically excludes, but the umbrella covers, results in a $260,000 judgment. How much does the umbrella pay?