15.3 Professional Liability and Errors & Omissions

Key Takeaways

  • Professional liability covers errors and omissions in professional services that the CGL excludes; E&O covers economic loss, malpractice covers bodily injury.
  • Most professional liability is claims-made: the claim must be first made during the policy period and the act must occur on or after the retroactive date.
  • Basic ERP is automatic and short; a purchased supplemental ERP (full tail) protects retiring or switching professionals against late-reported claims.
  • Defense is often inside the limits (eroding/wasting), so legal costs reduce the money available to pay the claim.
  • Exclusions include intentional/dishonest acts, bodily injury under E&O forms, employee injury, and acts before the retroactive date.
Last updated: June 2026

Professional Liability and Errors & Omissions

Professional liability insurance responds to claims arising from a failure to use the degree of skill and care expected of a professional - a wrongful act, error, or omission in rendering or failing to render professional services. The CGL specifically excludes professional services, so this is a separate, essential policy.

Two branches dominate the exam. Errors & Omissions (E&O) covers economic or financial harm from professional mistakes (insurance agents, accountants, architects, real estate brokers, tech firms). Malpractice covers bodily injury or death caused by professional negligence (physicians, surgeons, nurses, dentists).

The Claims-Made Trigger

Unlike the occurrence-based CGL, most professional liability is written on a claims-made form. Coverage responds only if the claim is first made against the insured during the policy period (or extended reporting period) AND the wrongful act occurred on or after the retroactive date.

Three dates control coverage:

DateRole
Retroactive dateEarliest wrongful-act date the policy will cover; acts before it are excluded
Policy periodThe claim must be first made during this window
Extended Reporting Period (ERP/tail)Lets claims be reported after expiration for acts before expiration

A classic trap: a wrongful act that occurred before the retroactive date is never covered, no matter when the claim is made.

Extended Reporting Periods (Tail Coverage)

When a claims-made policy is not renewed, the insured needs a tail to cover claims reported after expiration for acts during the policy period.

  • The Basic ERP (mini-tail) is automatic and free: typically a 60-day window to report claims for acts already known, plus a 5-year window for unknown acts discovered later (terms vary by form).
  • The Supplemental ERP (full tail) must be purchased, can be unlimited in duration, and is the safe choice when a professional retires or changes carriers.

Moving from one claims-made carrier to another with a matching retroactive date avoids a coverage gap without buying a tail; advancing the retroactive date creates an uninsured gap.

Defense Costs and the Consent-to-Settle Clause

Professional liability policies frequently use defense-inside-the-limits (also called "eroding" or "wasting" limits): every dollar spent on defense reduces the limit available to pay the claim. This contrasts with the CGL, where defense is paid in addition to the limit.

Many E&O and malpractice forms include a consent-to-settle ("hammer") clause. The insurer cannot settle without the professional's consent; but 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 - the insured pays any excess.

Worked Limit-Erosion Example

A design firm has a $1,000,000 claims-made E&O limit with defense inside limits. A claim is defended for $250,000 in legal fees, then settles for $900,000.

The limit available for the settlement is $1,000,000 - $250,000 = $750,000. The insurer pays $750,000 toward the $900,000 settlement, and the firm personally pays the remaining $150,000.

Had the policy paid defense outside the limits (like a CGL), the full $1,000,000 would have been available for the settlement, fully covering the $900,000.

Common Exclusions

Professional liability forms exclude:

  • Intentional, dishonest, fraudulent, or criminal acts (an innocent-insured provision may protect partners not involved).
  • Bodily injury and property damage under E&O forms (those belong on the CGL); malpractice forms cover bodily injury but exclude pure economic loss.
  • Bodily injury to employees (workers comp territory).
  • Liability assumed under contract beyond the professional's common-law duty.
  • Known claims and prior acts before the retroactive date.

Agents must remember their own insurance agents E&O does not cover the agent's failure to remit premiums or knowingly placing coverage with an insolvent insurer.

E&O vs. Malpractice - Which Harm Is Covered

The cleanest way to sort professional liability questions is by the kind of harm. E&O answers claims of economic or financial loss caused by a professional's mistake - an accountant who botches a tax filing, an insurance agent who fails to place requested coverage, an architect whose design error causes cost overruns. Malpractice answers claims of bodily injury or death caused by professional negligence - a surgeon, a dentist, a nurse.

The CGL excludes professional services entirely, which is why both branches exist as standalone coverage. When a scenario describes a financial loss from bad professional advice, think E&O; when it describes physical injury from professional treatment, think malpractice.

The Standard of Care

Professional liability turns on the professional standard of care - the degree of skill and diligence a reasonably competent member of that profession would exercise, which is higher and more specialized than the ordinary reasonable-person standard. A claimant must usually establish that standard (often through expert testimony) and show the professional breached it, causing harm.

This is why these policies are essential for licensed and skilled occupations: their work is judged against a demanding benchmark, and a single error can cause large financial or physical harm. Tie this back to negligence theory - professional liability is negligence measured against a professional, not lay, standard.

Why the Hammer Clause Matters

The consent-to-settle (hammer) clause creates a real tension the exam tests. The insurer may want to settle a claim cheaply, but a professional may refuse because a settlement can damage a reputation or trigger a licensing report.

The hammer clause resolves this: if the insured refuses a settlement the insurer recommends and the insured accepts, the insurer's liability is capped at the recommended settlement amount plus defense costs to that point, and the insured pays any excess judgment and defense thereafter. Soft hammer clauses split the excess (for example, 50/50). Understanding that the clause pressures the insured to accept reasonable settlements, while preserving some control, explains its design.

Test Your Knowledge

A claims-made E&O policy has a $1,000,000 limit with defense inside the limits. The insurer spends $250,000 defending a claim that then settles for $900,000. What does the insurer pay toward the settlement?

A
B
C
D
Test Your Knowledge

On a claims-made professional liability policy, which situation is NOT covered?

A
B
C
D