15.3 Professional Liability and Errors & Omissions

Key Takeaways

  • Professional liability (E&O, and medical malpractice for healthcare) covers economic harm from negligent acts, errors, or omissions in rendering professional services - a gap the CGL specifically excludes.
  • Most professional liability is written claims-made, so the claim must be both made and reported during the policy period (or extended reporting period), unlike occurrence-based CGL.
  • The retroactive date bars coverage for wrongful acts before that date; an extended reporting period (tail) preserves coverage for claims reported after the policy ends for pre-expiration acts.
  • Professional liability typically excludes bodily injury and property damage (covered by CGL) and instead pays for financial/economic loss, plus defense that often erodes the limit.
  • Consent-to-settle (hammer) clauses let the insured refuse a settlement but cap the insurer's exposure at the rejected offer plus defense to that point.
Last updated: June 2026

The Gap the CGL Leaves

The Commercial General Liability policy covers bodily injury, property damage, and personal/advertising injury - but it expressly excludes liability arising out of rendering or failing to render professional services. A faulty design, a missed audit deadline, a botched legal filing, or a misdiagnosis causes economic harm, not a slip-and-fall, so the CGL will not respond.

Professional liability (called Errors & Omissions / E&O for most occupations and medical malpractice for healthcare providers) fills that gap. It pays for the insured's negligent acts, errors, or omissions committed in the course of professional duties.

Quick Answer: CGL = physical injury/damage from your premises and operations. Professional liability = financial harm from your professional advice or services.

E&O forms are tailored by occupation: lawyers professional liability, accountants E&O, real estate E&O, insurance agents E&O, technology/cyber E&O, and architects/engineers professional liability. Each excludes the bodily-injury exposures handled elsewhere and zeroes in on the standard of care for that profession. A claimant must show the insured deviated from what a reasonably competent practitioner would have done and that the deviation caused a financial loss.

Claims-Made: The Defining Trigger

Unlike the occurrence-based CGL, most professional liability is written on a claims-made (or claims-made-and-reported) basis. The trigger is when the claim is made/reported, not when the wrongful act happened.

Two dates control everything:

TermFunction
Retroactive dateEarliest date a covered wrongful act may have occurred; acts before it are never covered
Extended Reporting Period (ERP / tail)Window after the policy ends to report claims for acts committed during the policy term

For a claim to pay on a claims-made policy, ALL of these must be true: (1) the wrongful act occurred on or after the retroactive date, and (2) the claim is first made during the policy period or the ERP.

ERPs come in two forms the exam contrasts. A basic (mini) tail is built in automatically for a short window (commonly 30-60 days) at no extra premium. A supplemental tail is purchased - often one, three, or unlimited years - for a premium frequently expressed as a percentage (for example, 100-200%) of the expiring annual premium. Switching carriers, retiring, or going out of business are the usual triggers for buying a supplemental tail to avoid a coverage gap.

Worked Trigger Example

A consultant buys claims-made E&O effective 1/1/2024 - 1/1/2025 with a retroactive date of 1/1/2022. Consider three scenarios:

  1. Wrongful act 6/2023, claim made 8/2024. Act is after the retro date (1/1/2022) and the claim is made during the policy term: COVERED.
  2. Wrongful act 9/2021, claim made 8/2024. Act predates the retro date: NOT COVERED, even though the claim arrived during the term.
  3. Wrongful act 6/2024, claim made 3/2025 (after expiration). Covered ONLY if the insured purchased an ERP/tail; otherwise the late report falls outside the term and is NOT COVERED.

The most common exam error is assuming claims-made works like occurrence - it does not. A claim reported after expiration with no tail is denied, even if the act happened during the policy term.

Why the CGL Cannot Cover Professional Acts

The CGL excludes professional services, so anyone whose product is advice, design, or judgment — physicians, lawyers, architects, accountants, insurance agents, IT consultants — needs professional liability / E&O for economic harm caused by an error, omission, or negligent act in rendering services. Unlike the CGL, E&O often covers purely financial loss (no bodily injury required) and is almost always written claims-made.

Medical Malpractice and Consent-to-Settle

Medical malpractice is the specialized E&O for healthcare providers, frequently sold through risk-retention groups. Many E&O forms contain a consent-to-settle ("hammer") clause: if the insured refuses a settlement the insurer recommends, the insurer's liability is capped at the amount it could have settled for plus defense to that date, shifting the cost of a refused settlement to the insured.

Defense and Limit Recap

FeatureTypical E&O treatment
TriggerClaims-made + retroactive date
Defense costsUsually inside the limit (eroding)
Covered lossEconomic loss from professional error/omission
Punitive damagesOften excluded / state-dependent
Intentional/dishonest actsExcluded

Because defense is typically inside the limit on E&O (the opposite of the CGL), a long defense can consume much of the policy before any damages are paid — a key contrast the exam draws between professional liability and general liability.

Test Your Knowledge

A claims-made E&O policy runs 1/1/2024-1/1/2025 with a 1/1/2022 retroactive date and no extended reporting period purchased. A wrongful act occurred 9/2021 and the claim is first made 8/2024. Is the claim covered?

A
B
C
D

Defense, Limits, and the Hammer Clause

Professional liability differs from the CGL in three structural ways the exam probes:

  • Defense inside the limit (eroding / wasting / 'burning' limits). Defense costs usually reduce the available limit, unlike CGL where defense is outside and in addition. A $1,000,000 limit that spends $300,000 on defense leaves only $700,000 for the settlement.
  • No bodily injury / property damage. Those belong to the CGL; professional liability pays financial / economic loss. Med-mal is the exception - it covers BI arising from professional care.
  • Consent-to-settle (hammer) clause. The insurer needs the insured's consent to settle, protecting the insured's reputation. But if the insured refuses a recommended settlement, the insurer's exposure is capped at the amount it could have settled for plus defense to that date; the insured owns any excess.

Worked hammer example. Insurer can settle for $200,000; the insured refuses, the case goes to trial, and a $450,000 judgment results. The insurer pays only $200,000 (plus defense to the refusal date), and the insured is liable for the remaining $250,000.

Test Your Knowledge

An E&O insurer can settle a claim for $200,000 but the insured invokes the consent-to-settle clause and refuses. The case goes to trial and a $450,000 judgment results. Under a typical hammer clause, what does the insurer owe?

A
B
C
D