15.3 Professional Liability and Errors & Omissions

The gap professional liability fills

A Commercial General Liability (CGL) policy responds to bodily injury, property damage, and personal and advertising injury. It does not cover purely economic loss caused by a professional's mistake - a wrong tax filing, a flawed engineering calculation, a missed legal deadline, or a defective software design. That exposure requires professional liability, also called Errors & Omissions (E&O) for non-medical professions and medical malpractice for healthcare providers.

Professional liability covers damages arising from a negligent act, error, or omission in rendering or failing to render professional services for others for a fee.

Claims-made trigger and the retroactive date

Most E&O and malpractice forms are claims-made (occasionally claims-made-and-reported). Two conditions must both be met for coverage:

1. The wrongful act occurred on or after the retroactive date, AND
2. The claim is first made against the insured during the policy period.

The retroactive date is the cutoff for prior acts. A wrongful act before the retro date is not covered no matter when the claim arrives.

Trap: Advancing or eliminating a retroactive date when renewing wipes out coverage for older acts - never "reset" the retro date forward without warning the insured.

Extended Reporting Periods (tail coverage)

Because claims-made coverage ends when the policy ends, a professional who retires or switches carriers needs an Extended Reporting Period (ERP), or tail, to report later claims for acts that occurred during the expired policy (and after the retro date).

• Basic (automatic) tail - short, often 30-60 days, no extra premium, sometimes a longer mini-tail for claims first reported within 5 years.
• Supplemental tail - purchased for additional premium, can be 1, 3, 5, or unlimited years.

A prior acts or nose coverage on a new policy (matching retro date) is the opposite solution: the new insurer agrees to cover acts back to the old retro date so a tail is unnecessary.

Worked tail scenario: A physician with a January 1, 2020 retro date retires June 30, 2026. A patient injured in 2023 (after the retro date) sues in 2027 - after the policy expired. Without tail coverage the claim is denied because no claim was made during the policy period. A purchased ERP that extends reporting (e.g., unlimited tail) preserves coverage for that 2023 act reported in 2027. The death or disability of an insured often triggers a free unlimited tail in many malpractice forms - a frequently tested concession.

Defense-within-limits (eroding limits)

Many professional liability policies make defense costs erode the limit of liability - so-called defense-within-limits or eroding/wasting limits. This contrasts with the CGL, where defense is generally paid in addition to the limit.

Worked example: A design-firm E&O policy has a $1,000,000 limit on a defense-within-limits basis. The insurer spends $300,000 defending a suit and the case settles for $800,000.

• Available limit: $1,000,000
• Defense already consumed: $300,000
• Remaining for indemnity: $700,000
• Settlement is $800,000 - the insured personally owes the $100,000 shortfall.

Under a CGL with defense outside limits, the full $1,000,000 would remain for the settlement.

Consent-to-settle and the hammer clause

In ordinary CGL, the insurer controls settlement. In medical malpractice and many professional E&O forms, settling can damage the professional's reputation or licensure, so the policy adds a consent-to-settle clause: the insurer cannot settle without the insured's agreement.

To discourage an insured from unreasonably refusing a good settlement, insurers add a hammer clause: if the insured refuses to consent to a settlement the insurer recommends, the insurer's liability is capped at the amount it could have settled for plus defense costs to that date; the insured bears everything above.

Common professional lines and exclusions

E&O is sold by profession with tailored forms: lawyers (legal malpractice), accountants, insurance agents/brokers, architects/engineers, real estate agents, technology/cyber (tech E&O/network security), and miscellaneous E&O for niche service businesses. Medical malpractice is its own market (physicians, hospitals, allied health).

Typical exclusions across professional forms:

• Dishonest, fraudulent, or criminal acts (often only after final adjudication)
• Bodily injury and property damage (left to the CGL)
• Prior known acts / claims the insured knew of before inception
• Express warranties or guarantees of a result
• Insured-vs-insured disputes between partners of the same firm

Why E&O Exists and How It Is Triggered

Professional liability / Errors & Omissions (E&O) covers economic harm caused by the negligent rendering of - or failure to render - professional services. The CGL cannot fill this role because it is triggered by bodily injury or property damage, while professional mistakes (a faulty audit, a missed filing deadline, bad coverage advice) cause financial loss with no physical injury. E&O therefore picks up exactly the exposure the CGL excludes.

Most E&O and medical malpractice policies are written claims-made with a retroactive date: coverage applies only if the wrongful act occurred on or after the retro date and the claim is first made during the policy period. Extended Reporting Periods (tail coverage) preserve protection for claims reported after the policy expires for wrongful acts that predate expiration, which is essential when a professional retires or switches carriers.

Defense-Within-Limits and Consent to Settle

Two features distinguish many professional policies from the CGL. First, professional limits are frequently "defense within limits" (eroding or wasting limits): defense costs are paid inside the limit, so a long legal battle reduces the money left to pay damages. On a CGL, by contrast, defense is paid in addition to the limit. An insured with a $1,000,000 eroding limit who spends $300,000 defending has only $700,000 left for the judgment.

Second, many medical malpractice and some professional policies contain a consent-to-settle (hammer) clause: the insurer cannot settle without the insured's consent, protecting the professional's reputation. If the insured refuses a reasonable settlement, the hammer clause may cap the insurer's exposure at the settlement amount plus defense, shifting later costs to the insured. This contrasts sharply with the CGL, where the insurer controls settlement.