15.3 Professional Liability and Errors & Omissions
Key Takeaways
- Professional liability (E&O) covers purely economic loss caused by negligent acts, errors, or omissions in rendering professional services - the CGL excludes professional services, which is why a separate policy is required
- Most E&O is written claims-made: the claim must be first made during the policy period AND the wrongful act must occur on or after the retroactive date
- Tail coverage (an Extended Reporting Period or ERP) lets the insured report claims after the policy ends for acts during the term; nose coverage moves the retroactive date back when changing carriers
- Malpractice is the medical version of E&O; defense costs may be inside or outside the limit, which materially changes how much is available to pay a judgment
- Professional liability excludes intentional/dishonest/fraudulent acts and bodily injury/property damage that the CGL is meant to cover
What Professional Liability Covers
Professional liability - commonly called Errors and Omissions (E&O) - pays for the economic (financial) loss a client suffers when a professional's advice or service is negligent, mistaken, or incomplete. This is fundamentally different from the CGL, which covers bodily injury and property damage. The CGL contains a professional services exclusion, so a CPA, attorney, insurance agent, architect, engineer, or IT consultant must buy E&O separately.
Quick Answer: General liability covers physical harm to others; professional liability covers financial harm from the professional's services or advice.
| Feature | Professional Liability (E&O) | General Liability (CGL) |
|---|---|---|
| Covers | Economic loss from professional errors | Bodily injury, property damage |
| Usual trigger | Claims-made | Occurrence |
| Key exclusions | Intentional/dishonest acts, fraud, BI/PD | Professional services |
| Typical buyers | Agents, CPAs, attorneys, doctors, engineers, IT | Almost every business |
Malpractice is simply the term used when the professional is a physician or other medical provider. The concept is identical: liability for negligence in rendering professional services.
The Claims-Made Trigger
Unlike the occurrence trigger on a CGL (which responds based on when the injury happened), most E&O is claims-made: coverage applies only if (1) the claim is first made during the policy period and (2) the wrongful act occurred on or after the retroactive date. Acts before the retro date are excluded.
Retroactive Date, Tail, Nose, and Defense Costs
Claims-made coverage lives and dies by dates:
| Term | What It Does |
|---|---|
| Retroactive date | The earliest date a covered wrongful act can occur. Acts before it are excluded. |
| Extended Reporting Period (ERP) / Tail | Lets the insured report claims after the policy ends for acts committed during the term. Vital at retirement or when a firm closes. |
| Nose coverage / prior acts | A new carrier agrees to a retro date earlier than inception, covering past acts so the insured can drop the tail. |
Worked Example: Retroactive Date and Tail
A design engineer's claims-made policy ran Jan 1, 2024 - Jan 1, 2026 with a retroactive date of Jan 1, 2024. Two scenarios:
- A design error made March 2025, claim filed June 2025: Covered. The act is after the retro date and the claim is made during the policy period.
- A design error made March 2025, but the policy is not renewed and the claim arrives April 2026: Not covered under the expired policy unless the engineer purchased an Extended Reporting Period (tail). With a tail, the late-reported claim for the in-term act is covered.
Defense Costs: Inside vs. Outside the Limit
A frequently tested distinction:
- Defense within limits (eroding / wasting limits): legal defense costs are deducted from the limit of liability, leaving less to pay the judgment. Common in E&O and D&O.
- Defense in addition to limits: defense is paid on top of the policy limit (as in the standard CGL).
Worked numeric: A $1,000,000 E&O policy with defense inside the limit incurs $300,000 in defense costs. Only $700,000 remains to pay any settlement or judgment. Under a CGL-style "in addition" approach, the full $1,000,000 would remain available for the loss itself.
Exclusions and Traps
E&O excludes intentional, dishonest, criminal, or fraudulent acts, bodily injury and property damage (the CGL's job), and known/prior claims. A common trap: a professional who delays reporting and lets a claims-made policy lapse without a tail has no coverage for in-term acts reported later.
Occurrence vs. Claims-Made Side by Side
A few professional lines (such as some medical malpractice) are still written occurrence-based, where coverage is triggered by the date of the act regardless of when the claim is reported. Understanding why claims-made dominates E&O is exam-relevant:
| Feature | Occurrence | Claims-Made |
|---|---|---|
| Trigger | Date the act/injury happened | Date the claim is first made |
| Late-reported claims | Covered by the policy in force when the act occurred | Need an ERP/tail if the policy has ended |
| Retroactive date | Not used | Critical - acts before it are excluded |
| Pricing maturity | Priced at full from year one | Cheaper early, steps up over the first several years |
Step factors explain why a brand-new claims-made policy is inexpensive: in year one there is little prior exposure to insure. The premium climbs each year (mature at roughly the fifth year) as the window of covered prior acts widens.
Common Professional Lines
E&O is a family of products tailored to occupation. Insurance agents E&O covers failure to procure requested coverage or to advise on adequate limits - a frequent exam scenario. Lawyers professional liability and CPA E&O follow the same claims-made framework. Medical malpractice is the physician version and often uses occurrence or claims-made with a long tail because bodily-injury claims surface years later.
The Reporting Trap
Claims-made policies typically require the insured to report a claim - or a circumstance likely to give rise to a claim - promptly, often as soon as practicable and within the policy period or ERP. Late notice can void coverage even when the act was clearly within the retro date and policy term. Tell candidates: with claims-made, report early and never let the chain of coverage break when switching carriers; use nose or tail coverage to bridge the gap.
An accountant's claims-made E&O policy has a retroactive date of June 1, 2023, and a policy period of June 1, 2024 to June 1, 2025. Which claim is COVERED?
A professional liability policy has a $1,000,000 limit with defense costs inside the limit (a wasting limit). The insurer spends $350,000 defending a claim that then settles. What is the most the policy can pay toward the settlement itself?