15.3 Professional Liability and Errors & Omissions
Key Takeaways
- Professional liability / E&O / malpractice covers economic harm from negligent professional acts, errors, or omissions - exposures the CGL professional-services exclusion removes.
- It is almost always written on a claims-made basis because professional errors surface long after the work is performed.
- The retroactive date bars coverage for wrongful acts committed before it, even if the claim is made during the policy period.
- Extended Reporting Periods (tails) let insureds report post-expiration claims; a basic mini-tail is automatic while a supplemental tail must be purchased.
- Many E&O policies use wasting limits where defense costs erode the limit available to pay a settlement, unlike CGL where defense is in addition.
Professional Liability Defined
General liability (CGL) covers bodily injury and property damage arising from premises and operations, but it specifically excludes liability arising from rendering or failing to render professional services. Professional liability - also called Errors & Omissions (E&O) for non-medical professions and malpractice for medical providers - fills that gap. It responds to economic or financial harm caused by a professional's negligent act, error, or omission, not just physical injury.
Professional liability is the classic example of coverage triggered by failure to meet a standard of care rather than an accident. Examples by profession:
| Profession | Common claim |
|---|---|
| Accountant / CPA | Missed tax deadline, audit error |
| Insurance agent | Failure to place requested coverage |
| Architect / Engineer | Defective design specification |
| Physician (medical malpractice) | Misdiagnosis, surgical error |
| Lawyer | Missed statute of limitations |
| Real estate broker | Failure to disclose defect |
A defining feature: most professional liability is written with no medical payments and no 'occurrence' trigger - because the harm is economic and the timing of discovery is uncertain, coverage is almost always claims-made.
Claims-Made Triggers, Retroactive Dates, and Tail
Because professional errors may surface years after the work, professional liability is overwhelmingly claims-made. Key concepts:
- Retroactive date: the earliest date a wrongful act can occur and still be covered. Acts before the retro date are excluded - a frequent test trap.
- Claims-made trigger: coverage responds only if the claim is first made during the policy period (or an extended reporting period), AND the act occurred on or after the retro date.
- Extended Reporting Period (tail): lets the insured report, after expiration, claims for acts that occurred during the policy period. A Basic ERP (mini-tail) is automatic (often 60 days to report, 5 years for the act); a Supplemental ERP must be purchased.
Defense-within-limits trap. Many E&O policies are 'eroding' or 'wasting' limits - defense costs reduce the limit available to pay the claim. If a $1,000,000 policy spends $250,000 on defense, only $750,000 remains for settlement. Contrast this with CGL, where defense is in addition to the limit.
- Trap: Medical malpractice 'incident' triggers and consent-to-settle ('hammer') clauses are common - the insurer may not settle without the doctor's consent, but the doctor then bears excess costs.
- Trap: Switching from claims-made to a new carrier without a retro date or tail creates a coverage gap for acts that have not yet produced a claim.
Lines of Professional Liability and the Agent's Own E&O
Professional liability is sold as distinct products tuned to each profession. Medical malpractice covers physicians, dentists, and allied health providers for negligent treatment, and often uses an incident trigger plus a consent-to-settle clause. Miscellaneous professional liability packages the many service trades (consultants, IT firms, property managers) that do not fit a named template.
Technology E&O and cyber liability increasingly overlap, the first covering negligent software or service performance and the second covering data-breach response, notification costs, and network security failures. Directors and officers is a management-liability sibling, not a professional-services form, and the two are tested as separate triggers.
The agent's own insurance E&O is heavily examined because it protects the producer the candidate is about to become. It responds to claims that the agent failed to procure requested coverage, allowed a policy to lapse, misrepresented terms, or gave negligent advice. It does not cover dishonest, fraudulent, or criminal acts, and it does not cover the agent's promise that a claim will be paid when the policy clearly excludes it. The standard defense is documentation: written records of what coverage the client requested and declined are the single best protection against an E&O verdict.
A tail-versus-prior-acts comparison is worth memorizing. A retiring professional buys a tail (supplemental ERP) to report future claims for past work. A professional changing carriers instead asks the new insurer for prior-acts (nose) coverage, which sets the retro date back to the original date so the new policy covers old acts. Buying neither leaves the classic claims-made gap.
Worked limit example: a consultant's E&O carries a $2,000,000 each-claim limit and a $2,000,000 aggregate, defense inside limits. A first claim costs $400,000 in defense and a $900,000 settlement, consuming $1,300,000 of the aggregate. A second claim the same year therefore has only $700,000 of aggregate remaining even though the each-claim limit reads $2,000,000. Candidates who forget that the aggregate caps the year miss this routinely.
Key Takeaways
Professional liability and E&O fill the CGL's professional-services gap, respond to economic harm, and are written claims-made with a retroactive date and tail options. Defense often erodes the limit, the aggregate caps the policy year, and dishonest acts are excluded. The agent's own E&O rewards meticulous documentation of what coverage a client requested and declined.
Exam drill: an architect's E&O has a 2022 retroactive date. A design error made in 2021 produces a claim in 2024. Coverage is denied because the act predates the retro date, even though the claim was made during the policy period. A second error made in 2023 that produces a claim in 2024 is covered. If that architect retires in 2024 without buying a tail, a claim arriving in 2025 for the covered 2023 act has no policy to report under. These three outcomes, turning on retro date and tail, are the single most tested professional-liability concept.
An accountant has a claims-made E&O policy with a retroactive date of January 1, 2024. In 2026 a client sues over a tax error the accountant made in November 2023. Why is the claim most likely NOT covered?
A professional liability policy has a $1,000,000 limit with defense costs INSIDE the limit (a 'wasting' limit). If $250,000 is spent defending a claim, how much remains to pay a settlement or judgment?