My Contract Requires Professional Liability (E&O) Insurance. What Now?

When a contract requires professional liability (E&O) insurance, check five things: the per claim and aggregate limits, whether claims-made coverage must continue after the contract ends, the minimum insurer rating, whether the client must be an additional insured, and what proof you must provide before starting. Then get a policy, or an endorsement to your current one, that matches each requirement before you sign.

By Trella Commercial · Updated October 24, 2026

The short version

Read the whole insurance section, not only the limit. Tail, rating, and proof requirements are where vendors get caught.
Limits: contracts we reviewed ask for $1 million to $2 million per claim, with aggregates up to $4 million.
Post-contract coverage: claims-made E&O may have to stay in place, or a tail be bought, for years after the work ends.
Additional insured: the state contracts we reviewed leave professional liability out of their additional insured requirements; check yours.
Proof first: some contracts, such as Idaho Department of Education's, bar you from starting work until the client has your proof of insurance.

Paste the insurance section into our contract insurance checker for a plain-English list of every requirement.

The five things to check

Requirement	What to look for	Example from real contracts
Limits	Per claim (or per occurrence) and aggregate amounts	$1,000,000 / $2,000,000 (Idaho Department of Education); $2,000,000 / $4,000,000 technology E&O (Washington contract 14822)
Claims-made continuation	How long coverage must continue after the contract, or a required tail	Three years after the contract (14822); 24-month tail, or continuous coverage with a retroactive date on or before the contract start or 24 months of prior acts coverage (Idaho Department of Education)
Insurer rating	Minimum A.M. Best rating and authorization in the state	A- VII or better, and authorized in the state, in both contracts
Additional insured	Whether the client must be added to your policies	Idaho Department of Education requires it on all policies except workers comp and professional liability
Proof of insurance	Certificates or endorsements, and when they are due	Idaho Department of Education: no work until satisfactory evidence of all required insurance is provided

What else may be in the clause

Scope of coverage. Technology contracts may list what the E&O must cover. Washington contract 14822, when the purchaser requests technology E&O, lists intellectual property infringement, privacy, information theft, damage to electronic information, extortion, network security, breach response costs, regulatory fines and penalties, and credit monitoring. See tech E&O.
Umbrella over professional liability. Contract 14822 requires a $1,000,000 umbrella that applies over professional liability among other policies. Umbrellas generally sit over only the policies they list as underlying insurance, so check that yours lists professional liability.
Waiver of rights. Contract 14822 includes a waiver of the contractor's rights against the state to the extent damages are covered by the required insurance.
Defense costs. Some contracts set higher limits when defense costs are inside the limits.
Indemnity. An indemnity clause can promise more than your E&O covers, especially if it is uncapped.

How to get covered

Send the insurance section to your broker before you sign, not after.
Compare it to your current policy. Many requirements can be met by raising a limit or adding an endorsement.
Ask for changes where coverage is not available, such as additional insured status on professional liability or notice requirements your insurer will not provide.
Set a retroactive date and tail plan that satisfy the post-contract requirement.
Get the certificate and any endorsements issued before your start date.

If you cannot meet a requirement

Problem	Options
The limit is higher than you carry	Raise the limit, or ask the client to accept a lower one
The contract asks to add the client as additional insured on E&O	Ask to remove it; the state contracts we reviewed do not require it
The required tail is longer than your insurer offers	Plan to keep continuous coverage with the same retroactive date instead, if the contract allows it, as Idaho Department of Education terms do
Your insurer's rating is below the minimum	Ask the client to accept it, or move to a qualifying insurer

Common questions

What does it mean when a contract requires E&O insurance?

The client wants proof that you carry professional liability insurance at stated limits, so that if your work causes them a loss, there is insurance to pay the claim. The clause usually also sets claims-made terms, insurer quality, and proof requirements.

How fast can I get E&O for a contract?

Often quickly, once the insurer has your application and the contract's requirements. Starting before you sign gives time to fix gaps like limits or endorsements.

Can I add a client as additional insured on my E&O policy?

Many E&O policies do not add clients as additional insureds, and the Washington and Idaho state contracts we reviewed do not ask for it on professional liability. If a private contract asks, ask the client to remove that requirement.

Do I need to keep E&O after the contract ends?

If the contract says so. Washington contract 14822 requires claims-made coverage for at least three years after it ends, and Idaho Department of Education terms require a 24-month tail or equivalent continuous coverage.

Sources

This guide is general information. Coverage depends on the policies actually issued. Reviewed October 2026.

More in this guide

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Insurance for Independent Contractors, Freelancers, and 1099 Consultants
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Which Professions Must Carry Professional Liability Insurance in Washington and Idaho?
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Additional Insured Explained
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