Umbrella Underlying Insurance Requirements: The Schedule, Minimum Limits, and Gaps

Every commercial umbrella lists the policies it sits on, its schedule of underlying insurance, with minimum limits for each, commonly $1 million for general liability, auto, and employers liability. If your actual limits are lower, or a policy is missing, you usually pay the difference before the umbrella responds. Matching the schedule to your real policies is the most important step in buying an umbrella.

By Trella Commercial · Updated October 5, 2026

The short version

The schedule is a promise. The umbrella assumes you carry each listed policy at the listed limit, and it pays only above that.
Common minimums: $1 million per occurrence for general liability, $1 million combined single limit for auto, and $500,000 or $1 million for employers liability. Requirements vary by insurer.
If you fall short, you fill the gap. A lower underlying limit, a lapsed policy, or a missing coverage usually leaves you paying the difference.
In Washington, employers liability means stop-gap, bought separately from L&I.
Changes during the year matter: a new vehicle, a reduced auto limit at renewal, or a switched insurer can break the match.

What a schedule of underlying insurance looks like

Underlying policy	Typical required limit	Notes
General liability	$1 million per occurrence, $2 million aggregate	Products-completed operations aggregate is often listed too
Commercial auto	$1 million combined single limit	Includes hired and non-owned auto if you use them
Employers liability	$500,000 to $1 million	Washington: stop-gap; Idaho and other states: Part Two of workers comp
Other (if scheduled)	As listed	Liquor liability, foreign liability, or watercraft for some businesses

The gaps that cost businesses money

Gap	Example	Result
Lower auto limit than scheduled	Auto carries $500,000; the umbrella requires $1 million	The business pays the $500,000 in between
No stop-gap in Washington	An employee injury suit outside L&I immunity	The umbrella may not respond
Missing hired and non-owned auto	An employee crashes their own car on an errand	No underlying auto policy for the umbrella to sit on
Exhausted aggregate	Several claims use up the general liability aggregate	Depends on whether the umbrella drops down
Lapse at renewal	The auto policy renews a week late	The umbrella may treat the period as uninsured underneath
Different named insureds	An LLC owns the property but is not on the general liability policy	The umbrella does not cover the LLC either

How to keep the schedule matched

Compare the schedule line by line with your actual declarations pages at every renewal.
Align renewal dates for the umbrella and underlying policies where possible.
List every named insured (each LLC and entity) on both the underlying policies and the umbrella.
Tell your broker before changing limits on any underlying policy.
Add new vehicles and locations to the underlying policies promptly.
Confirm drop-down terms for exhausted aggregates.

Common questions

What is a schedule of underlying insurance?

The list in a commercial umbrella of the primary policies it sits on, such as general liability, auto, and employers liability, with the minimum limit required for each. The umbrella pays only above those limits.

What happens if my underlying limits are lower than required?

You usually pay the difference between your actual limit and the required limit before the umbrella responds. Some policies treat the required limit as if it were in place, leaving you responsible for the gap.

What underlying limits does a commercial umbrella require?

Commonly $1 million per occurrence for general liability, $1 million combined single limit for auto, and $500,000 to $1 million for employers liability, though each insurer sets its own requirements.

Do I need employers liability under my umbrella in Washington?

Usually yes, if the umbrella schedules it. Washington L&I coverage does not include employers liability, so employers buy stop-gap separately to meet the requirement.

Does the umbrella cover my LLC?

Only if the LLC is a named insured on the umbrella and on the underlying policies. Entities left off the underlying policies are usually outside the umbrella too.

Sources

This page describes requirements commonly found in commercial umbrella policies. Each insurer's requirements differ. Reviewed October 2026.

More in this guide

Commercial Umbrella and Excess Insurance for Washington and Idaho Businesses
The complete guide this page is part of.
Umbrella vs Excess Liability Insurance: The Difference and Which You Need
Commercial umbrella and excess liability policies both add limits above your general liability, auto, and employers liability, but they work differently. How follow-form excess and umbrella coverage differ, drop-down coverage, retentions, and how to stack them.
What a Commercial Umbrella Covers and What It Does Not
What a commercial umbrella policy covers above your general liability, auto, and employers liability, the claims it can pick up that underlying policies exclude, the standard exclusions (professional, cyber, EPLI, pollution), and the terms to compare.
How Much Commercial Umbrella Coverage Does a Business Need?
How to size a commercial umbrella limit for a Washington or Idaho business: vehicles, premises, products, contract requirements, the assets at risk, large jury verdicts, and how Washington and Idaho fault and damages rules affect the number.
What Drives the Cost of a Commercial Umbrella
Why commercial umbrella premiums vary so much: vehicles, industry, revenue, claims history, underlying limits, and the limit you buy. How additional millions are priced and practical ways to lower the cost without creating gaps.
Washington Stop-Gap and Your Umbrella: The Employers Liability Gap
Why Washington employers need stop-gap employers liability under a commercial umbrella: L&I immunity, when employees can still sue (deliberate intention and contractual waivers under RCW 4.24.115), umbrella underlying requirements, and how to match limits.
Commercial Auto and Your Umbrella: Minimums, Fleets, and Employees' Cars
Why vehicles drive most commercial umbrella decisions: Washington and Idaho minimum auto limits, federal trucking minimums, hired and non-owned auto, employees driving their own cars, and how to line up auto and umbrella limits.
Contracts That Require an Umbrella: What the Clause Means and How to Meet It
How to read umbrella and excess requirements in general contractor subcontracts, property management agreements, leases, and client contracts: limits, additional insured, primary and noncontributory, follow form, waiver of subrogation, and Washington indemnity rules.
Umbrella Insurance for Rental Property Owners and LLCs
How umbrella coverage works for landlords and real estate investors in Washington and Idaho: personal umbrellas vs commercial umbrellas for rentals, properties held in LLCs, named insured mistakes, and how to cover owners and entities together.
Personal vs Commercial Umbrella: Why Business Owners Need Both, Coordinated
The difference between a personal umbrella and a commercial umbrella, why each excludes what the other covers, where business owners fall into the gap between them, and how to coordinate the two.
Umbrella Insurance for Contractors in Washington and Idaho
Commercial umbrella insurance for contractors in Washington and Idaho: what general contractors and owners require, completed operations, trucks and equipment, Washington stop-gap and immunity waivers in subcontracts, and residential or height exclusions to check.

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