Commercial Umbrella Insurance

Underlying Policy Requirements for Commercial Umbrella Insurance

Underlying Policy Requirements for Commercial Umbrella Insurance — everything contractors need to know about umbrella coverage.

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What Primary Coverage Your Umbrella Carrier Will Require

A commercial umbrella policy sits above your GL, commercial auto, and employers liability policies — extending your total liability protection beyond what any single policy can provide. For contractors facing large projects, high-value claims, and contract requirements, umbrella coverage is essential.

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Minimum GL Requirements

Umbrella carriers typically require $1M per occurrence / $2M aggregate GL as the minimum underlying limit. Some carriers require $500K per occurrence as a minimum. If your GL is below the umbrella’s required minimum, you have an uninsured gap — a potentially catastrophic exposure.

Commercial Auto Requirements

For the umbrella to extend over commercial auto, you must maintain commercial auto liability at the carrier’s required minimum — typically $1M CSL. If you have no commercial auto policy or your auto limit is below the minimum, the umbrella won’t cover auto liability claims above that threshold.

Employers Liability Requirements

Workers compensation policies include employers liability at limits typically set at $100K/$500K/$100K or higher. The umbrella requires these to be maintained. For contractors in states with mandatory workers comp, maintaining WC automatically satisfies this requirement.

The Gap Risk of Dropping Underlying Limits

If you reduce your GL from $1M to $500K to save money — without checking your umbrella’s minimum required underlying limits — you may create a $500K uninsured gap between where GL ends and umbrella begins. This is a real and costly mistake contractors make when trying to reduce premiums.

Scheduled Underlying Policies

Your umbrella policy lists your underlying policies on a schedule. Keep this schedule accurate. Adding new underlying policies (a new commercial auto policy, for example) should be reported to your umbrella carrier so they can update the schedule and ensure seamless coverage coordination.

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Frequently Asked Questions

What happens if I drop below required underlying limits?
If your GL drops below the umbrella’s minimum underlying requirement, you become personally responsible for the gap between your actual GL limit and the minimum the umbrella requires. The umbrella won’t pay until that minimum threshold is met — even if the GL is exhausted.
Do I need to use the same carrier for GL and umbrella?
No — umbrella and underlying policies can be with different carriers. However, using the same carrier often generates discounts and simplifies claims coordination.
What if I temporarily drop commercial auto coverage?
If your commercial auto coverage lapses, the umbrella’s extension over auto essentially disappears. Notify your umbrella carrier of any coverage changes — they may issue a premium credit but will also note the coverage gap in your file.
How often should I review my underlying policy schedule?
Review your umbrella’s underlying schedule annually at renewal. Any time you add, cancel, or change an underlying policy, update your umbrella carrier. An outdated schedule can create coverage disputes when a claim occurs.
Can umbrella carriers audit my underlying coverage?
Yes — umbrella carriers can review your underlying policies at renewal. If they find you’ve been carrying lower limits than required, they may adjust your premium retroactively or issue a reservation of rights on outstanding claims.

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