Short Answer
Expert witness and litigation consulting work is not automatically covered under a professional liability policy just because the underlying profession is insured. Whether this activity has expert witness coverage depends on the policy's professional services definition, any endorsements, and applicable exclusions. Firms performing this work should confirm it's contemplated by their policy rather than assuming it fits under their existing design or engineering coverage.
Why expert witness work is treated differently
Expert witness testimony and litigation consulting are a different activity from the design, inspection, or construction-related services most A&E firms are underwritten for. An engineer testifying about the standard of care in someone else's project, or consulting on a construction defect dispute, is not performing engineering design work in the traditional sense.
Some professional liability policies extend coverage to this kind of work automatically if it falls within a broad professional services definition. Others require a specific endorsement, and some exclude litigation-related services entirely. There's no standard answer across carriers, which is why the actual policy language controls.
Expert witness testimony versus litigation consulting versus forensic engineering
These terms often get grouped together, but they can be treated differently depending on the policy:
Expert witness testimony generally means offering a professional opinion in a legal proceeding, often through a report and deposition or trial testimony.
Litigation consulting is broader and can include advising an attorney or party on technical issues without ever testifying.
Forensic engineering refers to investigating a failure or defect to determine its cause, which may or may not lead to expert testimony.
A policy might address one of these terms specifically without addressing the others, which is part of why ambiguous wording creates real coverage uncertainty.
Design work versus litigation-related professional services
A firm's core professional services definition is usually built around its primary discipline, such as structural or civil engineering design. Litigation-related work involves a different set of exposures. The engineer is often being paid for an opinion about someone else's work rather than performing their own design.
This distinction matters because underwriters price and evaluate these exposures differently. A carrier that priced a policy based on structural design work may not have contemplated the firm also taking on expert witness engagements when the policy was written.
Why firms should tell their broker before expanding into this work
A firm earning meaningful revenue from expert witness or litigation consulting work should disclose that activity to their broker and carrier, rather than assuming it's covered because the firm's core services are insured. This allows the carrier to confirm coverage, offer an endorsement if needed, or flag any exclusion that applies.
Waiting until a claim arises from an expert witness engagement is the wrong time to find out whether the activity was contemplated by the policy.
Why ambiguous endorsement wording should be clarified in writing
Some policies mention "expert witness services" inside an endorsement without clearly defining the scope of what's included. If the wording is ambiguous, such as covering "testimony related to the insured's professional services" without specifying whether litigation consulting or forensic investigation is included, the firm should ask the carrier or broker to clarify in writing rather than assuming the broadest possible reading applies.
Example
A structural engineer earns $75,000 annually from litigation consulting and expert witness work in construction defect cases. The firm's declarations page describes the insured services simply as structural engineering, with no specific mention of litigation or expert witness activity.
Before relying on this policy for that portion of the practice, the firm should confirm with its broker whether the professional services definition or any endorsement actually contemplates expert witness and litigation consulting work, rather than assuming it's included because the firm is otherwise a licensed structural engineering practice.
What to check in your own policy
- Review the professional services definition for any mention of litigation, expert witness, or forensic work
- Check for a specific endorsement addressing expert witness services
- Look for exclusions related to litigation consulting or testimony
- Confirm whether forensic investigation work is treated the same as expert testimony
- Ask your broker to clarify any ambiguous wording in writing before relying on it
Related Questions
Is expert witness work automatically covered under my E&O policy?
Not necessarily. Coverage depends on the professional services definition, endorsements, and exclusions in your specific policy, not solely on the fact that your core profession is insured.
Do I need a separate policy for litigation consulting?
Some firms do, depending on how much of this work they perform and what their current policy allows. This is a question to work through with your broker based on your actual practice.
Does forensic engineering count as expert witness work?
It can overlap, but the two aren't always treated identically under a policy. Forensic investigation and expert testimony should each be checked against the policy language separately.
What happens if my policy doesn't mention expert witness services at all?
Silence in a policy doesn't necessarily mean coverage exists or doesn't. It means the activity should be raised with your broker and carrier directly for clarification.
Should I disclose expert witness income to my insurance carrier?
Generally yes. Disclosing this revenue allows the carrier to confirm coverage or offer an endorsement, rather than leaving the question unresolved until a claim occurs.
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Read MoreAuthor:
Hardcover Editorial Team
Reviewed by:
Hardcover Insurance Team
Last reviewed:
September 25, 2026
This article is educational and does not provide legal advice or determine whether a specific claim is covered. Policy terms, exclusions, underwriting requirements, and applicable law vary. Consult your insurance professional and qualified legal counsel regarding your circumstances.