15.3 Professional Liability and Errors & Omissions

What professional liability covers

Professional liability, also called errors and omissions (E&O) or malpractice in medical contexts, responds to claims that the insured caused financial harm by negligently rendering or failing to render professional services. Unlike a CGL, which covers bodily injury and property damage arising from premises and operations, professional liability covers the economic consequences of professional mistakes - bad advice, a missed deadline, a faulty design, a misdiagnosis.

The CGL contains a professional services exclusion, which is exactly why a separate policy is required. Examples by occupation:

There is no requirement that the harm be physical. A title insurer that misses a lien, or an accountant whose error triggers an IRS penalty, causes purely financial damages that the CGL would never reach.

Claims-made structure - the dominant trigger

Most E&O is written claims-made rather than occurrence. A claims-made policy covers a claim only if it is first made against the insured during the policy period (and reported per the form), provided the negligent act happened on or after the retroactive date.

Two dates control everything:

• Retroactive date - the earliest date of a negligent act that the policy will cover. Acts before this date are excluded even if the claim arrives during the policy period.
• Reporting / claim date - the claim must be first made (and usually reported) during the policy period or extended reporting period.

Worked timeline

A consultant's claims-made policy runs 1/1/2026 to 1/1/2027 with a retroactive date of 1/1/2023.

Extended reporting period (tail)

When a claims-made policy is cancelled or non-renewed, claims reported afterward would fall into a gap. An Extended Reporting Period (ERP), or tail, extends the time to report claims for acts that occurred before the policy ended (back to the retro date). A Basic ERP (mini-tail) is automatic and short (e.g. 60 days); a Supplemental ERP is purchased and can be 1, 3, 5 years, or unlimited. The tail never advances the retroactive date - it only extends reporting time.

Why E&O Is Almost Always Claims-Made

Professional liability — Errors & Omissions (E&O) for agents, accountants, architects; malpractice for medical/legal — covers economic harm from rendering or failing to render professional services, a long-tail exposure where the error and the claim can be years apart.

That long tail is why E&O is written claims-made with a retroactive date: the current policy responds to claims first made now, using current limits, and a tail (ERP) or prior-acts endorsement bridges any gap when the professional changes carriers or retires. Professional liability does not require bodily injury — it pays for financial loss from negligent advice.

The Consent-to-Settle (Hammer) Clause

Many professional liability policies, especially medical malpractice, contain a consent-to-settle provision: the insurer cannot settle without the insured professional's consent, protecting the professional's reputation. The hammer clause is the counterweight — if the insurer recommends a settlement the insured refuses, the insurer's liability is capped at the amount it could have settled for plus defense costs to that date, leaving the insured to pay any excess.

Worked example: the insurer can settle a claim for $200,000 but the surgeon refuses; the case goes to trial and a $500,000 judgment results. Under a full hammer clause, the insurer pays only $200,000 and the surgeon owes the $300,000 excess. A modified (soft) hammer splits the excess by a stated percentage (e.g., 70/30).

Medical malpractice and the consent-to-settle (hammer) clause

Medical malpractice may be written on either occurrence or claims-made forms. A widely tested feature is the consent-to-settle, or hammer, clause. Because a malpractice settlement is reported to data banks and can damage a physician's reputation, professional policies often require the insured's consent before the insurer settles.

The hammer clause limits that protection: if the insured refuses to consent to a settlement the insurer recommends, the insurer's liability is capped at the amount for which the claim could have been settled, plus defense costs to that date. The insured then bears any excess from continuing to fight.

Worked hammer-clause example

The insurer can settle a claim for $200,000 with $20,000 in defense costs incurred to date. The physician refuses, the case goes to trial, and the verdict is $500,000 with $80,000 total defense.

• Insurer's capped liability: settlement amount it recommended + defense to the refusal date = $200,000 + $20,000 = $220,000
• Physician's responsibility for the excess: $500,000 - $200,000 = $300,000 (plus the additional $60,000 of defense beyond the cap, depending on form)

Why E&O is written claims-made

Professional negligence often produces a long tail - the harm from a faulty engineering design or a missed legal deadline may not surface for years. Pricing an occurrence policy for such a slow, uncertain tail is hard, so insurers prefer claims-made, which tells them each year which claims have actually been reported.

For the insured this means continuity matters: switching carriers or letting a policy lapse can create a gap unless a tail is bought. When an insured replaces one claims-made policy with another, the new policy should carry the same retroactive date so prior acts stay covered without a tail.

Key professional-liability traps

• A CGL never covers professional services - never select 'CGL' for a malpractice or E&O claim.
• Claims-made ties to the retroactive date; occurrence ties to when the injury happened.
• 'Prior acts' coverage means a retro date earlier than the policy inception; a 'full prior acts' policy has no retro date.
• The tail extends reporting time, not the retro date, and never advances coverage to acts before the original retro date.