15.3 Professional Liability and Errors & Omissions

Key Takeaways

  • Professional liability (E&O) covers economic loss caused by negligent acts, errors, or omissions in rendering professional services — it does NOT require bodily injury or property damage the way CGL does.
  • Almost all professional liability is written on a CLAIMS-MADE basis with a retroactive date; the claim must be made during the policy period AND the act must occur on or after the retro date.
  • Medical malpractice is the physicians' form of professional liability; many states require it to be claims-made and often add a Patient Compensation Fund for excess limits.
  • Extended Reporting Periods (tail coverage) preserve claims-made protection for claims reported after expiration arising from acts during the policy term.
  • Consent-to-settle ('hammer') clauses let the insurer cap its payment at the amount a claim could have settled for if the insured refuses a recommended settlement.
Last updated: June 2026

Professional Liability vs. CGL

Commercial General Liability covers bodily injury and property damage from premises and operations. It expressly excludes professional services. The professional's distinct exposure — economic/financial harm caused by a mistake in expert advice or service — is covered by Professional Liability, also called Errors & Omissions (E&O).

FeatureCGLProfessional Liability (E&O)
TriggerBodily injury / property damageNegligent act, error, or omission in services
Loss typePhysical injury, physical damageFinancial/economic loss
Coverage basisUsually occurrenceAlmost always claims-made
Professional servicesExcludedCovered

Quick Answer: E&O covers a client's financial loss caused by a professional's negligent error, whereas CGL covers bodily injury and property damage and excludes professional services entirely.

Who Buys It

ProfessionForm Name
Physicians, surgeons, hospitalsMedical Malpractice
LawyersLawyers Professional Liability
AccountantsAccountants E&O
Insurance agents/brokersAgents E&O
Architects/engineersDesign Professional E&O
Real estate agentsReal Estate E&O

Note that medical malpractice is the medical form of professional liability — many states mandate it on a claims-made basis and add a state Patient Compensation Fund that supplies excess limits above the physician's primary policy.

Claims-Made Mechanics and the Retroactive Date

For a claims-made policy to respond, two conditions must both be met:

  1. The claim is first made against the insured during the policy period (or the extended reporting period).
  2. The negligent act occurred on or after the retroactive (retro) date.
Date the Act OccurredDate the Claim Is MadeCovered?
Before retro dateDuring policy periodNo — act predates retro date
After retro dateDuring policy periodYes
After retro dateAfter policy expires, no tailNo — claim not made in period
After retro dateAfter expiration, tail purchasedYes

Worked example: Retro date 1/1/2022; policy runs 1/1/2026 to 1/1/2027. A negligent audit performed 3/2024 generates a lawsuit filed 6/2026. Both tests pass — act after retro, claim during period — so the 2026 policy responds.

Prior Acts and the 'Nose' on Renewal

When a professional switches carriers, the new insurer can either set the retro date to the inception of the new policy (no prior-acts coverage — a dangerous gap) or grant full prior-acts ('nose') coverage by carrying forward the old retro date. The exam expects you to recognize that advancing the retroactive date forward strips coverage for past services, so a careful agent negotiates to preserve the original retro date at renewal or replacement.

Defense costs in E&O are frequently inside the limit (eroding/'wasting'), meaning legal fees reduce the money left to pay a judgment. A $1,000,000 limit that spends $250,000 defending the claim leaves only $750,000 for settlement — a sharp contrast with the CGL, where defense is usually paid in addition to the limit.

Extended Reporting Period (Tail Coverage)

When a claims-made policy is not renewed, claims reported afterward could fall into a gap. The Extended Reporting Period (ERP), or tail, preserves coverage for claims reported after expiration that arise from acts during the policy term (after the retro date).

ERP TypeDescription
Basic (mini-tail)Automatic short window (e.g., 60 days) at no extra charge
Supplemental (full tail)Purchased; can be 1, 3, 5 years or unlimited

Consent-to-Settle ('Hammer') Clause

Many E&O and malpractice forms include a consent-to-settle provision. The insurer may want to settle, but the professional (guarding their reputation) refuses. The hammer clause then caps the insurer's liability at the amount the claim could have settled for, plus defense costs to that point — the insured bears any excess judgment.

Common Exam Traps

  • No bodily injury required — E&O covers financial loss from a negligent service.
  • Both tests must pass on claims-made: claim in period and act after retro date.
  • Tail (ERP) covers claims reported late, not acts committed late.
  • CGL excludes professional services — that is the whole reason E&O exists.

Matching the Right Professional Policy to the Insured

Professional liability (errors & omissions) covers economic harm from a professional's negligent act, error, or omission in rendering professional services — a financial-injury exposure the CGL specifically excludes. The exam tests matching the insured to the correct form: physicians and nurses buy medical malpractice; lawyers, architects, engineers, accountants, insurance agents, and IT consultants buy E&O; and the policies are almost always claims-made because professional claims surface long after the work.

Two professional-policy features are heavily tested. The consent-to-settle ("hammer") clause lets the insured refuse a settlement the insurer recommends, but if the insured refuses and the case later resolves for more, the insured may be responsible for the excess above the amount the claim could have settled for. The retroactive date and extended reporting period govern which past acts are covered and how a departing professional protects against late claims.

Unlike the CGL, most E&O policies have defense costs inside the limit (eroding limits), so defense expense reduces the money available to pay the claim — a critical distinction from the CGL's outside-the-limit defense.

Defense-Within-Limits and the Retroactive-Date Trap

A make-or-break E&O point is that defense costs usually erode the limit (defense "inside the limits"), unlike the CGL where defense is paid in addition. On a $1,000,000 E&O policy, $300,000 of defense leaves only $700,000 to pay a settlement, so candidates must factor defense into the available coverage. The retroactive date is the second trap: the policy covers only wrongful acts on or after that date, and switching insurers without preserving the original retroactive date (by buying prior-acts/nose coverage) silently strips coverage for earlier work.

Test Your Knowledge

An accountant's E&O policy has a retroactive date of 1/1/2022 and a term of 1/1/2026 to 1/1/2027. A negligent tax return prepared in March 2024 leads to a client lawsuit filed in June 2026. Is the loss covered, and why?

A
B
C
D
Test Your Knowledge

An insurer recommends settling a malpractice suit for $200,000, but the physician invokes their right to refuse settlement. The case proceeds and a $500,000 judgment results. Under a consent-to-settle (hammer) clause, what is the typical effect?

A
B
C
D