Professional liability vs. general liability: key differences

One of the most common coverage misconceptions in commercial insurance: clients who provide professional services often assume their GL policy covers claims arising from their work. It doesn't. General liability and professional liability (also called errors and omissions, or E&O) cover fundamentally different types of claims — and a business that provides advice, design, or professional services needs both.

What general liability covers

Commercial general liability covers bodily injury and property damage claims that arise from business premises and operations. The coverage is triggered by a physical event — something that happens in the world: a customer slips and falls, a worker drops something and damages a client's property, a fire at your office spreads to a neighboring business.

GL covers the physical consequences of running a business. It does not cover claims that arise from the quality of your work or the advice you provided.

What professional liability (E&O) covers

Professional liability covers claims arising from a failure to perform professional services with the standard of care expected in the profession. This includes:

• An accountant who makes an error in a client's tax return
• An architect whose design has a structural flaw
• An attorney who misses a deadline and causes a client to lose their case
• A software developer who delivers a product that doesn't function as specified
• A consultant whose advice leads to financial loss
• An insurance agent who fails to place the coverage a client needed (agents carry their own E&O — see our guide to E&O insurance)

Professional liability is written on a claims-made basis — the claim must be made during the policy period, not when the event occurred. This is an important distinction from GL, which is typically written on an occurrence basis.

The coverage gap in plain terms

The clearest way to explain the gap to a client: "GL covers you if someone gets physically hurt because of your business. Professional liability covers you if a client sues you because they weren't happy with — or were harmed by — the work you did for them."

A consulting firm whose recommendation causes a client's project to fail — no one was physically hurt, nothing was physically damaged — but the client lost $500,000 following bad advice. That claim falls entirely outside the GL policy. Without professional liability, the consulting firm has no coverage for defense costs or any resulting judgment.

Who needs professional liability

Any business that provides advice, design, or professional services as its primary business needs professional liability. Common professions requiring E&O:

• Architects and engineers
• Accountants and CPAs
• Attorneys
• IT consultants and software developers
• Business and management consultants
• Marketing and advertising agencies
• Real estate agents and brokers
• Financial advisors and investment managers
• Insurance agents (E&O is required by most states)
• Healthcare providers (malpractice is a form of professional liability)

When a claim falls in the gap

The tricky cases are when a claim has elements of both physical harm and professional failure. A contractor who both designs and builds a structure may face a design defect claim — is that a GL claim or a professional liability claim? In many cases, the answer depends on how the claim is pleaded, what the contract says, and which state's law applies.

For design-build contractors, architects who also supervise construction, and consultants who also implement their recommendations, a combined GL + professional liability program ensures coverage regardless of how a claim is categorized. Some carriers offer combined programs for specific professions.

Professional liability underwriting

Professional liability is underwritten on the nature of the services provided, the revenue derived from those services, and the client's prior claims history. Key underwriting questions include the types of projects undertaken, the size of contracts, any incidents that could give rise to a claim, and what quality control processes are in place. A well-structured submission that addresses these factors produces better results than a bare-bones application.

Identify professional liability exposure at intake

AgencyAssist's intake asks about professional services so you never miss an E&O conversation with a consulting or professional services client.