What errors and omissions insurance is
Errors and omissions insurance — almost always shortened to E&O — is professional liability coverage for work that lives in your head and your hands rather than in a product. It responds when a client claims that something you did, failed to do, or did incorrectly in the course of your professional work cost them money: advice that was wrong, a service performed badly, a deadline missed, an error buried in a deliverable. When it responds, the policy pays for your legal defense and for a settlement or judgment against you, up to its limit. Two boundaries matter. E&O concerns financial harm from professional services; someone getting hurt or something getting physically damaged belongs to general liability. And most E&O is written claims-made — the policy in force when the claim arrives is the one that answers, regardless of when the work was done. Nearly every surprise in this line of insurance traces back to one of those two boundaries.
Who needs E&O insurance
The cleanest test: people pay you because your judgment is better than theirs, and if your judgment fails, they lose money. That describes consultants, accountants and bookkeepers, insurance agents and brokers, real estate professionals, architects, engineers, designers, technology providers, and creative and marketing firms — any business selling expertise, decisions, or a skilled service. The buyer is rarely careless. The exposure exists because skilled work is done by humans under time pressure, and because clients experience even honest disagreements about scope as your error. A large share of first-time E&O buyers purchase because a contract requires the certificate; the requirement is usually the paperwork noticing a risk that was present from the first engagement. If your deliverable is a recommendation, a filing, a design, a configuration, or a number someone else will rely on, the question is not whether a mistake is imaginable. It is who absorbs its cost.
What E&O excludes — and where people get surprised
- It does not reimburse you for redoing the work. Producing a correct deliverable the second time is your expense. E&O addresses the client’s claim for the loss your error caused — a different pile of money.
- Knowing wrongdoing is outside the form. Fraud, dishonesty, and intentional acts are excluded. The policy is engineered for mistakes, and it withdraws when the conduct was deliberate.
- The retroactive date cuts off old work. Claims-made coverage reaches back only to the date printed in the policy. Work from before that date is uninsured, which is why a careless carrier switch — accepting a fresh retroactive date — can silently strand years of good work.
- Claims reported late can be lost entirely. A claim must be reported during the policy period or within the brief window the form grants afterward. A demand that sits unopened through a renewal is the most preventable coverage failure in the line.
- Neighboring risks belong to other policies. A breached client database points to cyber coverage; an employee’s grievance to employment practices liability; a visitor’s fall to general liability. E&O is one precise instrument, not a general remedy for business trouble.
One scenario, composited
A small bookkeeping firm prepares a retail client’s filings for the year and transposes a figure in one of them. The error is discovered when the client receives a penalty notice — plus interest — from the tax authority. The client pays the penalty and then claims against the firm for it and for the accounting cost of straightening out the year. The firm’s E&O policy does what the line exists to do: it provides a defense, the claim is examined and negotiated, and it resolves within the limit. The firm’s own hours re-preparing the filing correctly are not covered; fixing the work was always the firm’s cost. Now hold the facts still and change only the paperwork: the claim arrives during a year when the firm, trimming expenses in a quiet season, had let the policy lapse and bought nothing to extend its reporting period. The work was performed while coverage was in place — and no policy responds, because a claims-made form follows the date of the claim, not the date of the work. Same error, same client, same loss. The calendar decided it.
The one question to ask your broker
“For work already on my books today, what exactly has to remain in force — and be reported, and by when — for a claim about that work to be paid if it arrives two years from now?”
Ask it before you buy, before you switch carriers, and before you let a policy lapse. The answer walks through your retroactive date, your reporting duties, and what protection to purchase if you close or sell the practice. A precise answer is what good coverage sounds like.
Related reading: Professional indemnity insurance · Claims-made vs. occurrence