Does E&O cover a missed signature or paperwork error at closing?

Buyers of this coverage tend to picture the claims it’s for as big judgment calls — bad advice, a missed disclosure, a deal gone wrong. In practice, plenty of E&O claims start smaller: a signature that didn’t get collected, a contingency deadline that came and went unnoticed, an addendum dated wrong. None of that involves professional judgment at all. It’s still covered — and still a claim.

Why a clerical error counts as an “error”

Professional liability responds to negligent errors, omissions, and failures to perform as promised — the Insurance Information Institute’s definition doesn’t carve out mistakes by size or type. A missed signature that lets a buyer walk from a deal, or a contingency deadline that lapsed and cost a client their earnest money, is a negligent omission in exactly the sense the policy is written for. The claim doesn’t need bad judgment behind it. It needs a mistake and a client who lost money because of it.

The part that actually decides coverage: timing

The size of the error isn’t the variable that determines whether a claim gets paid. The variable is when it surfaces relative to the policy. Professional liability is written claims-made — often claims-made and reported — so:

• The error has to be discovered and the claim reported while the policy (or an extended reporting period / tail) is active.
• A paperwork mistake from three years ago, surfacing today under a policy that’s since lapsed with no tail purchased, can fall into an uncovered gap — not because the error wasn’t real, but because of when it was reported.
• Switching carriers without career/prior acts coverage can leave the same kind of gap from the other direction.

Why documentation habits matter beyond just avoiding the mistake

Saving and organizing transaction communications doesn’t just reduce how often a documentation error happens — it shapes how defensible a claim is once one is filed. A dated email trail showing a deadline was flagged and a client chose to proceed anyway is a materially different claims file than one with no record at all. That’s a claims-defense question, not just a filing habit.

Questions people actually ask

Is a missed signature really something an insurer will pay a claim over? Yes, if it caused a client measurable financial harm — the mistake being clerical rather than a bad judgment call doesn’t exempt it.

Does it matter how the error was discovered? Not for whether it’s covered — but when it’s discovered and reported relative to the policy period is the detail that decides it, per the claims-made mechanics above.

Can good documentation practices prevent a claim? They can reduce how often small errors happen and improve the defense when one is filed, but they don’t substitute for coverage — a real error still needs a real policy in force to respond to it.

Coverage responds to negligent errors regardless of scale; reporting timing under your specific claims-made form is the detail to confirm with your broker before assuming a small mistake is automatically covered.