What is errors & omissions (E&O) insurance?
Errors & omissions (E&O) insurance — most people call it professional liability insurance — covers claims that your professional work or advice caused a client to lose money. Where general liability deals with physical accidents like injuries and property damage, E&O deals with financial harm: a design flaw, a missed detail, a recommendation that went sideways.
If your work is pure labor, you may never be asked about E&O. But the moment a job involves designing, specifying, inspecting, or advising, it becomes worth understanding — here's the plain-English version.
What E&O insurance actually covers
E&O responds when a client says your professional judgment cost them money. The classic triggers are a mistake in delivered work, something important left out (that's the "omission"), a missed deadline that caused a loss downstream, or advice that turned out to be wrong. Nobody gets hurt and nothing gets physically broken in these claims — the damage is financial.
A big part of what you're buying is defense. Even a claim with no merit takes lawyers and time to make go away, and E&O policies typically pay to defend the claim as well as cover a settlement or judgment, up to the policy's limits. What they typically don't cover: intentional wrongdoing, and bodily injury or property damage — those belong to general liability.
Who tends to carry E&O
E&O is standard equipment in occupations where the product is judgment rather than labor. You'll most often see it carried by:
- Insurance agents and brokers
- Real estate agents and property managers
- Accountants, bookkeepers, and financial advisors
- Consultants and project managers
- Architects, engineers, and design-build firms
- Home and building inspectors
- IT and software professionals
E&O vs general liability
General liability covers the physical world: a dropped tool cracks a client's countertop, or a pipe you soldered lets go and soaks a ceiling. E&O covers the professional world: money a client says they lost because of your work product or advice.
Picture a hypothetical HVAC contractor. If a fitting on a unit they installed leaks and stains a kitchen ceiling, that's a general liability claim. If that same contractor also designed the system for a small restaurant, undersized it, and the owner claims lost business while it was reworked — that's the E&O side of the street. Same contractor, same building, completely different policies.
The two aren't interchangeable; they're teammates. Neither one substitutes for the other, because each is built to exclude what the other covers.
When E&O comes up for contractors and trades
If you install to someone else's plans, your risk is mostly a general-liability story, and E&O rarely appears in your contract paperwork. It tends to show up once a job includes design responsibility, construction management, inspections, or consulting — many clients and general contractors ask for it on design-build contracts. Requirements vary by state and by contract, so if you're not sure whether a job calls for it, check with your insurance agent or licensing body rather than guessing.
One quirk worth knowing: many E&O policies are written on a "claims-made" basis, which usually means the policy in force when the claim is filed is usually the one that responds — provided the work happened after the policy's retroactive date. That makes coverage gaps and carrier switches worth a conversation with your agent.
Showing clients proof of E&O
When a client wants proof of your E&O coverage, your agent issues a certificate of insurance listing it alongside your other policies — the same document you already use to show general liability coverage. Like any policy, it renews on a schedule, so the certificate you sent last year may already be out of date.
CompliCloud tracks your E&O certificate the same way it tracks the rest — one dashboard, early reminders, and a share link your client can check anytime.
Common questions
Is E&O insurance the same as professional liability insurance?
For most purposes, yes — the two terms are used interchangeably. "Professional liability" is the umbrella label, and some fields use their own names for the same idea (doctors call it malpractice coverage, for example). For contractors and consultants, E&O and professional liability usually describe the same policy.
Does general liability cover mistakes in my professional work?
Generally no. General liability policies are built around bodily injury and property damage. A claim that your advice, design, or specs cost a client money usually falls outside them — that gap is exactly what E&O exists to fill. Coverage details vary by policy, so confirm with your agent.
How do I show a client that I carry E&O?
Ask your agent for a certificate of insurance that lists the E&O policy alongside your other coverages. A tool like CompliCloud lets you keep that certificate on file and send a no-login share link, so a client can verify your coverage without a single email attachment.
Does E&O cover intentional wrongdoing?
Policies typically exclude intentional or dishonest acts. E&O is designed for honest mistakes, oversights, and disputed judgment calls — not deliberate misconduct. Your policy's exclusions section spells out the specifics.
This guide is general information for US trades businesses, not legal or insurance advice. Requirements vary by state, locality and contract — confirm the specifics with your licensing body, your client’s contract, or your insurance agent.