15.3 Professional Liability and Errors & Omissions
Key Takeaways
- Professional liability covers economic harm from rendering or failing to render professional services, not the bodily injury and property damage that the CGL covers.
- Most professional liability and errors & omissions (E&O) policies are written on a claims-made basis with a retroactive date.
- Malpractice (medical), E&O (agents, accountants, real estate), and similar forms all answer for negligence in the exercise of professional skill.
- An extended reporting period (ERP), or tail, lets the insured report claims after a claims-made policy ends for acts before expiration.
- Professional liability typically excludes intentional/fraudulent acts and bodily injury already covered by the CGL.
Why the CGL Is Not Enough
The Commercial General Liability (CGL) policy covers bodily injury and property damage, but a professional's biggest exposure is economic loss caused by a mistake in advice or service. A botched tax return, a missed filing deadline, or a defective architectural plan causes financial harm with no physical injury, so the CGL does not respond.
Professional liability insurance (also called errors & omissions, or E&O, and malpractice for medical professionals) fills that gap. It pays for damages arising from the insured's negligent act, error, or omission in rendering or failing to render professional services.
Forms by Profession
| Form | Typical insured |
|---|---|
| Medical malpractice | Physicians, nurses, hospitals |
| Legal malpractice | Attorneys, law firms |
| E&O (agents/brokers) | Insurance producers |
| Accountants E&O | CPAs, bookkeepers |
| Architects & engineers (A&E) | Design professionals |
| Directors & officers | Corporate management (covered separately) |
Unlike CGL, professional forms do not require physical injury - the trigger is a wrongful professional act that causes a third party financial loss.
Claims-Made and the Retroactive Date
Most professional liability is claims-made, not occurrence. A claim is covered only if:
- The wrongful act occurred on or after the retroactive date, and
- The claim is first made during the policy period (or extended reporting period).
The retroactive date is the earliest date of an act that the policy will cover. Acts before it are never covered, even if the claim is reported during the policy term.
Example: A policy has a retroactive date of January 1, 2024, and runs calendar year 2026. A claim made in 2026 for an error committed in 2023 is denied because the act predates the retroactive date.
Extended Reporting Period (Tail)
Because claims-made coverage stops responding once the policy ends, an extended reporting period (ERP), or tail, lets the insured report claims after expiration for acts that occurred before expiration (and after the retro date).
- A basic (mini) tail is automatic and short, often 30-60 days.
- A supplemental tail is purchased and can extend for years or unlimited.
The tail does not cover new acts after the policy ends; it only extends the reporting window.
A nose (prior-acts coverage) is the opposite tool: when an insured moves to a new claims-made carrier, the new policy can pick up the prior retroactive date, covering old acts as long as the claim is reported under the new policy. Buying nose coverage usually costs less than a long tail and avoids a coverage gap.
Duty to Defend and Limits
Unlike a CGL where defense is normally outside the limit, professional liability often pays defense inside the limit, so legal fees erode the dollars available for damages. Some policies also impose a per-claim deductible that applies to defense as well as indemnity.
Example: A CPA's $500,000 accountants E&O policy has a $10,000 deductible applied to loss and defense. Defense costs $90,000 and the settlement is $250,000. The insured pays the $10,000 deductible; the insurer pays $90,000 defense plus $240,000 of settlement (after deductible) = $330,000, leaving $170,000 of the limit intact.
An insurance agent's E&O policy is claims-made with a retroactive date of June 1, 2025, and a term running through June 1, 2026. A client sues in May 2026 over advice the agent gave in March 2025. Is the claim covered?
Occurrence vs. Claims-Made Compared
Understanding the two triggers side by side is a high-yield exam topic:
| Feature | Occurrence | Claims-Made |
|---|---|---|
| Trigger | Injury/act happens during term | Claim first made during term |
| Retroactive date | None | Yes - limits how far back acts are covered |
| Tail needed | No | Yes, to report after expiration |
| Premium maturity | Stable | Rises in early years as exposure matures |
| Long-tail claims | Old policy responds years later | Current policy or tail responds |
Claims-made dominates professional lines because losses can surface years after the work, and insurers want to know their exposure is tied to a fixed reporting window rather than open-ended occurrence liability.
Consent-to-Settle and Defense
Many professional liability and errors & omissions (E&O) policies contain a consent-to-settle (or hammer) clause. The insurer cannot settle a claim without the professional's consent, protecting the insured's reputation. If the insured refuses a settlement the insurer recommends, a hammer clause may cap the insurer's payout at the proposed settlement amount, leaving the insured to fund any excess judgment and added defense.
Example: The insurer recommends settling for $200,000; the insured refuses. The case later costs $350,000. A hammer clause may limit the insurer to the $200,000 it could have settled for, plus defense to that point, leaving the insured responsible for the $150,000 difference.
Common Exclusions and Traps
- Intentional, dishonest, or fraudulent acts are excluded - coverage is for negligence, not willful wrongdoing.
- Bodily injury and property damage are pushed back to the CGL.
- Prior knowledge: acts the insured knew could give rise to a claim before binding are excluded.
- A trap: switching carriers without buying a tail leaves a gap between the old retro date and the new policy's reporting window.
- Many policies use defense inside the limit (eroding), so heavy litigation reduces the dollars left for settlement.