Policy Types & Coverage

Professional Liability (E&O)

Professional liability insurance, commonly called errors and omissions (E&O) coverage, protects businesses against claims alleging negligent acts, errors, or omissions in the delivery of professional services. If a client suffers a financial loss because of advice you gave, work you failed to complete, or a mistake in your deliverable, E&O responds where general liability does not. It is the primary coverage for accountants, consultants, architects, engineers, IT firms, insurance agents, and any business that sells expertise rather than physical products.

Why Professional Liability Matters for Independent Agents

E&O is one of the most misunderstood policies among small business owners. Many assume their general liability policy covers "everything," and don't realize until a claim hits that GL explicitly excludes professional services. An accountant whose tax preparation error costs a client $50,000 in IRS penalties has zero GL coverage for that claim. A web developer who misses a launch deadline, causing a client to lose revenue, is looking at an E&O claim — not a GL claim.

For agents, this knowledge gap is both a risk and an opportunity. The risk is that an uninsured client gets hit with a professional negligence lawsuit and blames the agent for not recommending E&O. The opportunity is that E&O is a relatively easy cross-sell once you explain the GL gap with a concrete example. "Your general liability covers someone slipping in your office. It does not cover a client suing you because your consulting advice cost them money. That's what E&O is for."

Quoting E&O requires more underwriting detail than a standard BOP or GL submission. Carriers want to know the specific professional services provided, the client types served (other businesses vs. consumers), annual revenue or billings, prior claims history, and contractual risk exposure. Hiscox, Hartford, and specialized markets like CNA and Beazley each have distinct appetites — Hiscox is strong in small professional services firms under $5 million in revenue, while CNA dominates in larger accounting and law firm programs.

How Professional Liability Insurance Works

E&O policies are almost always written on a claims-made basis, which is fundamentally different from the occurrence basis used for GL. Under a claims-made policy, coverage applies only if the claim is made during the active policy period — even if the alleged error happened years earlier. This creates two critical concepts agents must explain to clients:

Standard E&O limits range from $250,000 to $5 million, with $1 million per claim / $2 million aggregate being the most common for small to mid-sized firms. Deductibles typically range from $1,000 to $25,000 depending on the firm size and risk profile.

E&O premiums vary significantly by carrier, profession, revenue, and claims history. A 10-person IT consulting firm with $1.5 million in annual revenue and no prior claims will see meaningfully different quotes from different carriers — not just in premium, but in available limits, deductible options, and coverage breadth. One carrier may offer a lower deductible at a slightly higher premium, while another may provide higher limits at a competitive rate. The variation across carriers makes comparison shopping essential. An agent who only quotes one carrier may leave better coverage or pricing on the table.

Some carriers — notably Hiscox for small firms — allow E&O to be endorsed onto a BOP, creating a convenient single-policy solution. For larger firms or those in high-risk professions like financial advisory or architecture, standalone E&O with a specialty carrier is almost always the better option due to broader coverage terms and higher available limits.

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