15.2 Commercial Umbrella and Excess Liability
Key Takeaways
- A commercial umbrella sits above scheduled underlying policies (CGL, business auto, employers liability) and provides excess limits plus, in some cases, broader drop-down coverage.
- The umbrella pays excess over underlying limits, drops down when underlying limits are exhausted by other claims, and can pay first-dollar (above a self-insured retention) for losses the underlying policy excludes but the umbrella covers.
- A self-insured retention (SIR) is the insured's own deductible-like obligation for losses not covered by underlying insurance; the umbrella responds only after the SIR is satisfied.
- True excess liability follows form and adds limits only; it does not drop down or broaden coverage the way a true umbrella can.
- Maintenance of required underlying limits is a condition; if the insured lets underlying coverage lapse, the umbrella pays as if the required underlying limit were still in place.
Three Jobs of a Commercial Umbrella
A commercial umbrella does three distinct things, and the exam tests all three:
- Excess limits - it pays above the limits of scheduled underlying policies.
- Drop-down - it becomes primary when an underlying aggregate is exhausted by unrelated losses.
- Broader coverage - it can cover claims the underlying excludes, subject to a self-insured retention (SIR).
A pure excess liability policy, by contrast, only does job 1: it adds limits and follows form, mirroring the terms of the policy beneath it.
Why Businesses Buy Umbrellas
A single large lawsuit can exceed primary limits. A retailer with a $1,000,000 CGL faces a $4,000,000 verdict; without an umbrella, the business pays $3,000,000 out of pocket. The umbrella exists to backstop catastrophic liability across multiple primary lines at once - general liability, auto, and employers liability - which is cheaper than raising each primary limit separately.
Umbrellas are sold in round limits, commonly $1M, $2M, $5M, $10M, and higher. Larger exposures stack multiple layers: a $5M umbrella plus a $5M excess layer above it yields $10M of additional protection. The exam may ask you to total all available layers for one occurrence.
Underlying Schedule and the SIR
The umbrella lists required underlying limits on its schedule, commonly:
| Underlying policy | Typical required limit |
|---|---|
| Commercial General Liability | $1,000,000 each occurrence / $2,000,000 aggregate |
| Business Auto | $1,000,000 combined single limit |
| Employers Liability | $1,000,000 each accident |
For a loss covered by the umbrella but not by any underlying policy, the insured first pays the SIR (for example $10,000), then the umbrella pays. The SIR is not a deductible against the underlying carrier - it is the insured's own retained layer.
Worked Stacking Example
A contractor carries CGL with a $1,000,000 each-occurrence limit and a $5,000,000 umbrella above it. A single liability judgment is $3,500,000.
- CGL pays its limit: $1,000,000.
- Umbrella pays the excess: $3,500,000 - $1,000,000 = $2,500,000.
- Remaining umbrella limit: $5,000,000 - $2,500,000 = $2,500,000.
Total available was $6,000,000, and the judgment is fully paid. If the CGL had lapsed, the maintenance-of-underlying condition forces the insured to absorb the first $1,000,000 as if the CGL were still in force.
A business lets its required underlying CGL policy lapse, then has a $2,000,000 covered loss. The umbrella requires $1,000,000 underlying CGL. How does the umbrella respond?
Drop-Down in Action
Drop-down is the umbrella's second job and is heavily tested. Suppose a CGL has a $2,000,000 aggregate that is exhausted by several earlier claims. A new covered occurrence arrives. Because the underlying aggregate is gone, the umbrella drops down to pay as primary, subject only to the umbrella's own terms (and any SIR for losses the underlying never covered).
Contrast this with simple excess: an excess policy does not drop down when the underlying aggregate is depleted - it only pays once a claim pierces the underlying per-occurrence limit. The distinction between an exhausted aggregate (umbrella drops down) and a pierced per-occurrence limit (both respond) is a classic trap.
Umbrella vs. Excess - The Exam Trap
Do not treat the terms as synonyms.
- A true umbrella can drop down and can pay for exposures the underlying excludes (above the SIR). It broadens coverage.
- A follow-form excess policy adds limits only; if the underlying excludes pollution, the excess also excludes pollution.
Watch the question stem for the phrase 'broader than the underlying' (umbrella) versus 'subject to the same terms as the underlying' (follow-form excess).
Common Umbrella Provisions and Exclusions
Umbrellas carry their own conditions:
- Other insurance - the umbrella is excess over any other valid and collectible insurance, even policies not listed on the schedule.
- Defense - the umbrella usually defends only when the underlying does not (because its limits are exhausted); otherwise defense is the primary carrier's duty.
- Exclusions - common carve-outs include workers compensation, employment practices, professional liability (E&O), pollution, and damage to the insured's own property.
Because the umbrella sits across multiple lines, a single SIR may apply per occurrence for gap losses. The exam expects you to know the umbrella is broad but not a substitute for specialty coverages like D&O or E&O.
Personal vs. Commercial Umbrella and the Aggregate
A commercial umbrella sits over business policies; a personal umbrella sits over a homeowners and personal auto policy. The mechanics are the same, but eligibility differs - the exam may ask which underlying policies feed each.
Most commercial umbrellas carry an annual aggregate that caps total payouts in a policy year, while a few are written with no aggregate for general liability occurrences. When a year sees several large claims, the aggregate can be exhausted, leaving later claims uncovered. Always read whether the umbrella limit is per occurrence only or per occurrence and aggregate - this controls how much is left after the first big loss.
How the Three Layers Work Together
An umbrella sits on top of required underlying limits and may also drop down to fill gaps:
| Layer | Role |
|---|---|
| Underlying (primary) | The CGL/auto/employers-liability limits the umbrella requires the insured to keep |
| Umbrella | Pays excess over the underlying limit, and can drop down to cover a claim the underlying excludes (subject to a self-insured retention) |
| Self-Insured Retention (SIR) | The insured's out-of-pocket amount when the umbrella drops down because no underlying coverage applies |
The distinction between a true umbrella (broader than the underlying, can drop down) and a plain excess policy (follows form, only adds limit, does not broaden) is heavily tested.
Drop-Down Worked Scenario
An insured carries a $1,000,000 CGL and a $5,000,000 umbrella with a $10,000 SIR.
- Excess scenario: A covered $3,000,000 liability judgment exhausts the $1,000,000 CGL; the umbrella pays the remaining $2,000,000 as true excess.
- Drop-down scenario: A $500,000 claim that the CGL excludes but the umbrella covers is paid by the umbrella after the insured satisfies the $10,000 SIR, so the umbrella pays $490,000.
The Maintenance-of-Underlying Trap
Umbrellas require the insured to maintain the scheduled underlying limits. If the insured lets a required primary policy lapse or carries less than scheduled, the umbrella treats the underlying as still in place — meaning the insured self-insures that gap. A claim that should have been paid by a lapsed $1,000,000 CGL leaves the insured personally responsible for that $1,000,000 before the umbrella's excess layer attaches. This is why producers verify underlying limits at every renewal.
A landscaping company has CGL of $1,000,000 per occurrence and a $4,000,000 commercial umbrella. A judgment of $4,200,000 results from one covered occurrence. Assuming all coverage is in force, how much does the insured pay out of pocket?
Which statement best describes a follow-form excess liability policy?