15.2 Commercial Umbrella and Excess Liability
Key Takeaways
- A commercial umbrella performs three jobs: excess limits above underlying policies, drop-down when an underlying aggregate exhausts, and broader coverage over a self-insured retention when the loss is excluded by underlying but covered by the umbrella
- A follow-form excess policy adds limits only and never drops down or broadens coverage beyond the underlying terms
- The schedule of underlying insurance lists required primary limits; if the insured lapses or reduces underlying coverage, the umbrella still treats the required limit as collectible and the insured absorbs the gap
- When a loss is covered by underlying, the umbrella attaches above the underlying limit; when not covered by underlying, the insured pays the SIR first
- Umbrellas exclude workers compensation benefits, most professional liability, pollution beyond narrow exceptions, and the insured's own product recall
A single serious liability judgment can erase years of profit for a Nevada contractor, hotel operator, or manufacturer. Primary policies — CGL, business auto, employers liability — carry limits that look large until a catastrophic BI claim with lifelong medical care arrives. Commercial umbrella and excess liability policies sit at the top of the liability tower, but they are not interchangeable. Confusing a true umbrella with a follow-form excess policy is one of the highest-value mistakes on the national casualty portion of the Nevada P&C exam.
Three Jobs of a True Commercial Umbrella
A commercial umbrella is not merely "more limits." It performs three distinct functions, and exam stems often ask which one is operating:
| Function | What Happens | When It Triggers |
|---|---|---|
| 1. Excess limits | Pays above underlying limits on a loss both policies cover | Underlying limit exhausted on a covered claim |
| 2. Drop-down | Umbrella becomes primary after underlying aggregate is used up | Prior claims exhausted the CGL aggregate this policy year |
| 3. Broader coverage | Covers some losses excluded by underlying | Insured pays SIR first; umbrella pays above SIR |
Memory hook: excess = more of the same · umbrella = more + drop-down + broader (over SIR).
How Attachment Works: Two Scenarios
Every umbrella claim routes through one of two attachment paths:
| Scenario | Insured Pays First | Umbrella Pays |
|---|---|---|
| Loss covered by underlying (e.g., CGL BI) | Nothing beyond underlying deductible/SIR on primary | Amount above underlying per-occurrence limit |
| Loss not covered by underlying but covered by umbrella | Self-insured retention (SIR) — commonly $10,000–$25,000 | Amount above the SIR up to umbrella limit |
The schedule of underlying insurance on the umbrella declarations lists each required primary policy and minimum limits. Typical requirements include:
- CGL: $1,000,000 each occurrence / $2,000,000 general aggregate
- Business auto: $1,000,000 combined single limit
- Employers liability: $500,000 each accident / disease limits
The insured must maintain these underlying policies throughout the umbrella term. This maintenance rule creates the exam's favorite trap.
Worked Layering — Standard Excess
Facts: CGL $1,000,000 per occurrence; commercial umbrella $5,000,000; covered judgment $3,500,000.
| Layer | Payment |
|---|---|
| CGL (primary) | $1,000,000 |
| Umbrella (excess) | $2,500,000 |
| Insured out-of-pocket | $0 |
Total recovery: $3,500,000. The umbrella paid only because the loss was covered by underlying and exceeded the primary limit.
Worked Drop-Down — Exhausted Aggregate
Facts: CGL $1,000,000 per occurrence / $2,000,000 aggregate. Earlier claims this policy year already paid $2,000,000, exhausting the aggregate. A new covered claim for $400,000 arrives.
The underlying CGL pays $0 — no aggregate remains. The umbrella drops down and pays the $400,000 (sometimes after a small maintenance retention stated in the form). Drop-down protects the insured when the number of claims, not the size of one claim, erodes primary protection.
Worked Broader Coverage — SIR First
Facts: CGL excludes a particular personal-injury offense; umbrella covers it. SIR = $25,000. Loss = $300,000.
| Step | Amount |
|---|---|
| CGL | $0 (excluded peril) |
| Insured pays SIR | $25,000 |
| Umbrella pays balance | $275,000 |
Without broader umbrella coverage, the insured would pay the entire $300,000. The SIR functions like a deductible on gap losses the primary policy never intended to cover.
Umbrella vs. Follow-Form Excess
| Feature | True Umbrella | Follow-Form Excess |
|---|---|---|
| Adds limits above underlying | Yes | Yes |
| Drops down when aggregate exhausts | Yes | No |
| Broader than underlying (over SIR) | Yes | No |
| Terms and exclusions | Own broader form | Mirrors underlying exactly |
A follow-form excess policy adopts the underlying policy's insuring agreements, exclusions, and conditions — it simply stacks higher limits. If the CGL excludes pollution, the follow-form excess excludes pollution. If the CGL aggregate is gone, the excess waits for underlying to respond and pays nothing because underlying cannot.
Large towers often combine both: a lead umbrella with drop-down and broadening, then follow-form excess layers of $10M, $25M, or more from other insurers. Claims professionals read the tower from the bottom up, exhausting each layer before the next attaches.
The Lapsed Underlying Trap
The umbrella requires stated underlying limits. If the insured allows the CGL to lapse or carries less than required, the umbrella treats the situation as if the required underlying limit were still in force — but the insured, not the umbrella carrier, must fund the missing primary layer.
Worked example: Umbrella requires $1M underlying CGL. Insured lets CGL lapse. Judgment = $3M on a covered occurrence claim.
- Umbrella pays only above the assumed $1M underlying = $2M
- Insured personally owes the first $1M that would have been paid by the lapsed CGL
An umbrella is not a substitute for primary insurance. It sits on top of maintained underlying coverage.
Common Umbrella Exclusions
Despite their breadth, commercial umbrellas exclude exposures that belong in specialty lines:
- Workers compensation and statutory employer benefits
- Professional liability / E&O (architects, lawyers, medical malpractice)
- Pollution beyond narrow fuel/lubricant exceptions
- Employer's liability below required underlying limits
- Contractual liability beyond an insured contract
- Product recall and damage to the insured's own work/product
- Intentional acts and criminal conduct
Nevada scenario: A Henderson technology firm faces a $4M data-breach class action alleging failure to secure client records. Standard CGL and umbrella exclude most cyber/professional data exposures. The firm needs cyber liability or technology E&O, not a higher umbrella limit alone.
SIR vs. Underlying Deductible
Students confuse SIR with a primary policy deductible. Key distinctions:
- SIR applies on umbrella broader-coverage claims not covered by underlying; the insured often handles the defense until the SIR is satisfied, depending on form wording.
- Underlying deductible applies on primary policies before the primary limit pays.
- On covered underlying losses, the umbrella attaches above the underlying limit, not above the underlying deductible — the primary insurer pays its limit after its deductible.
Producer Checklist for Nevada Accounts
- Confirm underlying policies meet the umbrella's schedule minimums.
- Verify aggregate limits on CGL — a busy contractor can exhaust aggregates mid-year.
- Ask whether the client needs true umbrella broadening or only excess limits (follow-form is cheaper but narrower).
- Identify excluded exposures (professional, pollution, cyber) that need separate policies, not higher umbrella limits.
- At renewal, ensure no gap when switching primary carriers — coordinate retro dates on any claims-made underlying lines.
Exam anchors: three umbrella jobs · SIR on gap coverage · drop-down on exhausted aggregate · follow-form excess never broadens · maintain underlying or eat the gap.
A covered claim totals $3.2 million. The insured maintains a $1 million CGL and a $5 million commercial umbrella. Both policies cover the loss. How much does the umbrella pay?
The CGL aggregate is fully exhausted by earlier claims. A new $350,000 covered claim occurs. A true commercial umbrella will most likely:
A loss is excluded by the CGL but covered by the umbrella, which has a $25,000 SIR. The loss is $180,000. How much does the insured pay before the umbrella responds?
Which statement best describes a follow-form excess liability policy?