15.3 Professional Liability and Errors & Omissions

What Professional Liability Covers

Professional liability — also called Errors and Omissions (E&O) — pays for economic loss a client suffers because a professional's work was negligent, mistaken, or incomplete. It is fundamentally different from commercial general liability (CGL), which covers bodily injury and property damage arising from premises and operations.

Malpractice is the medical/legal label for the same idea; E&O is the term used for accountants, agents, real estate brokers, architects, and engineers. CGL specifically excludes professional services, so a professional needs a separate E&O policy.

Claims-Made Triggers: Retroactive Date and Tail

Most E&O policies are claims-made: coverage applies only if the claim is first made during the policy period (or extended reporting period) and the wrongful act occurred on or after the retroactive date.

• Retroactive date: the earliest date a covered act can occur. Acts before it are never covered.
• Extended Reporting Period (ERP) / tail: lets the insured report claims after the policy ends, for acts that happened during the policy term.
• Prior acts coverage: a retro date set earlier than policy inception, picking up past work.

Trap: in a claims-made form, the act date must be on/after the retro date AND the report date must be in the policy or ERP window. Both tests must pass.

Worked Example: Retroactive Date and Reporting

An architect buys a claims-made E&O policy with a retroactive date of 1/1/2023. In 2026 a client sues over a design defect.

• If the design work was done in 2024 (after the retro date) and the claim is reported during the current term, the claim is covered.
• If the design work was done in 2022 (before the retro date), the claim is NOT covered, even though the lawsuit arrives during the policy term — the act predates the retroactive date.

The lesson: moving the retroactive date forward narrows coverage and lowers premium; moving it backward (full prior acts) broadens coverage at higher cost. When an insured switches carriers, matching the prior retro date prevents a coverage gap.

Defense Costs, Limits, and Common Professions

E&O limits are usually written per claim and aggregate, frequently with defense costs inside the limit (eroding/wasting limits) rather than in addition. Trap: if defense erodes the limit, a $1,000,000 policy that spends $300,000 defending leaves only $700,000 for the settlement.

Key professional lines and their forms:

Most E&O forms cover only the named insured's professional services and exclude bodily injury (left to the CGL), dishonest/criminal acts, and known prior claims at binding.

Consent-to-Settle, the Hammer Clause, and Occurrence vs. Claims-Made

Many professional liability policies include a consent-to-settle provision: the insurer cannot settle a claim without the insured's agreement, protecting the professional's reputation. To prevent an insured from blocking a reasonable settlement, carriers add a hammer clause. Under a traditional hammer clause, if the insured refuses a settlement the insurer recommends, the insurer's liability is capped at the recommended settlement amount plus defense incurred to date — the insured pays the excess.

Worked hammer-clause example: the insurer recommends settling at $400,000, but the professional refuses, the case goes to trial, and a $900,000 judgment results. Under a 100% hammer clause:

• Insurer's liability is capped at the $400,000 it would have paid
• The insured is responsible for the remaining $500,000

Modern policies often soften this to a shared (e.g., 50/50 or 80/20) hammer, splitting the excess. Candidates must also distinguish occurrence from claims-made: a few professions (some miscellaneous E&O) use occurrence forms where the policy in force when the act happened responds, regardless of when the claim is reported. Claims-made dominates professional lines precisely because the long lag between an error and its discovery makes occurrence pricing nearly impossible to reserve for accurately.

E&O vs. Malpractice and Why It Is Claims-Made

Professional liability covers financial harm caused by a professional's errors, omissions, or negligent advice — distinct from the CGL, which excludes professional services and covers bodily injury and property damage. For physicians and other healthcare providers it is called malpractice; for agents, accountants, architects, and consultants it is errors and omissions (E&O).

Because professional claims are long-tail (an error today may surface years later), these policies are almost always claims-made, using a retroactive date and extended reporting (tail) options to manage the gap between the negligent act and the claim.

Consent-to-Settle, the Hammer Clause, and Defense Inside Limits

Professional liability forms contain provisions the exam tests by name. The consent-to-settle clause requires the insurer to obtain the insured's permission before settling, protecting the professional's reputation. The hammer clause discourages an insured from unreasonably refusing a settlement by capping the insurer's exposure at the rejected settlement amount plus defense to that point.

A critical structural point: many professional-liability policies pay defense costs inside the limits (eroding/wasting limits), so legal fees reduce the money available to pay a judgment — unlike the CGL, where defense is paid in addition to the limits. Recognizing eroding-limit defense is a frequent distinction on the exam.