Commercial Umbrella and Excess Liability

Commercial Umbrella and Excess Liability

A commercial umbrella sits above an insured's primary liability policies and does three jobs: it provides higher limits over the underlying coverage, it drops down when an aggregate underlying limit is exhausted, and it provides broader coverage for some claims the primary excludes (subject to a self-insured retention). A true excess liability policy, by contrast, only adds limits and follows the underlying form — it does not broaden coverage.

Required underlying limits

Umbrella insurers require the insured to carry stated minimum underlying limits. Typical schedule requirements are:

If the insured lets an underlying limit fall below the schedule, the umbrella pays as if the required limit were still in place — the insured becomes self-insured for the gap. The exam loves this trap.

How the layers stack

The umbrella attaches at the top of the underlying limit, not at dollar one. For losses the umbrella covers but the primary does not, the insured first pays a self-insured retention (SIR) — commonly $10,000 — before the umbrella responds. The retention functions like a small primary policy the insured self-funds, and claims within it must still be reported so the umbrella can monitor erosion of the underlying aggregate.

• Coverage A: excess over scheduled underlying insurance.
• Coverage B: umbrella coverage for losses not covered by underlying (subject to SIR).
• Drop-down: when the underlying aggregate is exhausted by covered claims, the umbrella becomes primary for subsequent covered losses.

Worked stacking example

A contractor carries CGL with a $1,000,000 per-occurrence limit and a $5,000,000 umbrella. A judgment of $3,500,000 (a covered occurrence) is entered.

• The CGL pays its $1,000,000 limit.
• The umbrella drops in above that and pays the remaining $2,500,000.
• Total recovery: $3,500,000, fully within the combined $6,000,000 of capacity.

Now suppose the contractor had only $500,000 of CGL — below the $1,000,000 required underlying limit. The umbrella still treats the underlying as $1,000,000, so it pays the same $2,500,000, and the contractor must pay the $500,000 gap out of pocket.

Following form vs. broadening

A following-form umbrella adopts the terms, conditions, and exclusions of the scheduled underlying policy, so it covers exactly what the primary covers but at higher limits. A true umbrella adds its own broader insuring agreement (Coverage B) for losses the primary excludes, which is why it requires the self-insured retention. When the umbrella's wording is broader than the primary, the umbrella — not the primary — defines the scope of the excess layer.

Umbrella premiums are modest relative to their capacity — a $5,000,000 layer often costs a fraction of the primary CGL — because the underlying policies absorb the frequent, smaller claims and the umbrella sees only severe, infrequent losses. This severity-driven pricing is why even mid-size businesses can afford $10,000,000 or more of liability protection.

Producers must reconcile the concurrency of underlying policies and the umbrella term. Mismatched policy periods or differing aggregate reset dates can leave a gap precisely when an underlying aggregate is exhausted late in the year.

Common exclusions and traps

• No drop-down for reduced limits the insured chose — only exhaustion by covered claims triggers drop-down.
• Umbrellas typically exclude professional liability, workers' compensation, owned-aircraft/watercraft beyond schedule, and pollution unless endorsed.
• A maintenance deductible may apply to claims with no underlying coverage; distinguish this from the larger SIR.
• Umbrella aggregate limits are usually restored annually but are not per-occurrence-only; check the declarations.
• A self-insured retention is not a deductible: the insured must pay and administer claims within the SIR, and the umbrella sits genuinely excess of it rather than reimbursing the insurer.

Drop-Down, SIR, and True Excess

A commercial umbrella does three things: it sits excess over scheduled underlying policies (CGL, auto, employers' liability), it provides broader coverage than the underlying, and where the umbrella covers a loss the underlying does not, it drops down to pay after a self-insured retention (SIR) — the insured's out-of-pocket deductible-like amount for those gap claims. A true excess (following-form) policy, by contrast, only adds limit on top of the underlying and does not broaden coverage or drop down.

Required Underlying Limits and Exhaustion

The umbrella requires the insured to maintain stated underlying limits (e.g., $1M CGL each occurrence, auto $1M, employers' liability $500k). If the insured lets underlying coverage lapse or carries lower limits, the umbrella still applies only excess of the required amount — the insured self-insures the difference. The umbrella pays after the underlying limits are exhausted by payment of covered claims, then provides its own limit (commonly $1M–$25M+) above that attachment point.

Umbrella Exclusions and the "Gap" Coverage Role

Even where it broadens coverage, the umbrella retains its own exclusions — typically workers' compensation, professional liability, owned-aircraft/watercraft beyond stated sizes, pollution (often), and obligations under contract for which no underlying applies. The umbrella's value lies in (1) extra limit above the underlying and (2) drop-down for claims the underlying does not cover, subject to the self-insured retention. The exam contrasts this with a following-form excess policy, which copies the underlying's terms exactly and never drops down to fill a gap the primary excludes.