Business Insurance  /  Professional Liability

Commercial Coverage

Professional Liability
Insurance — Also Called
Errors & Omissions.

General liability covers physical damage and injury. But if a client claims your advice, your design, your recommendations, or your professional service caused them financial harm — that’s a different claim entirely. GL won’t cover it. Professional liability is what does.

What Professional Liability / E&O Insurance Covers

Coverage for claims that your professional service, advice, or work caused a client financial harm.

Professional liability insurance — also called errors and omissions (E&O) — protects your business when a client claims that a mistake, an oversight, a bad recommendation, or a failure to perform caused them financial damage. It covers the cost of defending the claim and any damages awarded, up to your policy limits.

The critical thing to understand is that professional liability doesn’t require you to have actually made a mistake. A client who believes your service caused them harm can file a claim regardless of whether they’re right. Defending that claim — even successfully — costs real money. Legal fees alone on a disputed professional liability claim can easily run $50,000 or more before a resolution. E&O covers those defense costs whether or not the claim has merit.

“You can do everything right and still face a professional liability claim. The coverage isn’t about admitting fault — it’s about having the resources to defend your work when someone disputes it.”

Professional liability is relevant any time your business provides a service that involves judgment, expertise, recommendations, or design decisions — not just licensed professions. If a client relies on what you tell them or what you produce for them, and the outcome doesn’t meet their expectations, you have E&O exposure.

What professional liability / E&O covers:

✓
Errors in your work or deliverables
A mistake in a design, a report, a plan, or a professional output that a client claims caused them financial loss
✓
Omissions — what you failed to do
A service or step that was missed, skipped, or overlooked that a client claims should have been part of your work
✓
Negligent advice or recommendations
A recommendation or professional opinion that a client acted on and claims resulted in financial harm
✓
Failure to deliver promised services
A client’s claim that your service didn’t meet the agreed standard or that deliverables fell short of what was promised
✓
Legal defense costs
Attorney fees, court costs, and expert witness fees to defend a covered claim — even when the claim is without merit
✓
Settlements and judgments
Covered damages awarded to the claimant or negotiated in settlement, up to the policy limit

GL vs. E&O — Understanding the Difference

They cover fundamentally different types of claims. Most businesses need both.

The most common misunderstanding about professional liability is that general liability already covers it. It doesn’t — and the distinction matters. Here’s exactly how they differ and why each one exists.

General Liability

Covers physical harm to people or property

GL responds when your business operations cause bodily injury to a third party or damage to someone else’s physical property. It’s about what happens in the physical world — a slip and fall, a broken window, property damage during a job.

Example: A contractor accidentally breaks a client’s irrigation system while working in their yard. GL covers the cost to repair the irrigation system.

Professional Liability / E&O

Covers financial harm from professional services

E&O responds when your professional advice, design, recommendation, or service causes a client financial loss. It’s about the quality and outcome of your professional work — not physical damage, but economic harm stemming from what you said, designed, or delivered.

Example: A designer’s irrigation system specification is incorrect — the system is installed per the spec but doesn’t function properly, causing costly rework. E&O covers the financial harm claim from the design error.

The key rule: GL covers what happens because of your physical operations. E&O covers what happens because of your professional judgment and services. A business that designs, advises, consults, or provides expertise needs both — because both types of claims are real, and neither policy covers the other’s territory.

Who Needs Professional Liability Coverage

Any business where clients rely on your expertise, judgment, or professional output.

E&O isn’t just for lawyers and accountants. Any business that provides advice, design, consultation, planning, or professional services — even as part of a broader trade or contractor operation — carries professional liability exposure.

Consultants & Advisors

Business consultants, management advisors, financial planners, and any professional whose value is their advice and recommendations.

Designers & Architects

Interior designers, architects, landscape designers, and anyone who produces plans, specifications, or design documents that others build from.

Technology & IT

Software developers, IT consultants, web designers, and tech service providers whose work clients depend on for business operations.

Pool & Spa Designers

Pool builders and contractors who provide design, specifications, or consultation services — not just construction. A design error that causes rework is an E&O claim.

Arborists & Tree Consultants

Tree service professionals who assess tree health, recommend removals, or advise on tree risk have professional liability exposure beyond their physical operations.

Real Estate Professionals

Real estate agents, brokers, property managers, and appraisers whose professional judgment and representations clients rely on in transactions.

Engineers & Surveyors

Any licensed professional whose technical work — calculations, assessments, surveys — others depend on for construction, permitting, or regulatory compliance.

Any Service Business Providing Expertise

If clients hire you for what you know, not just what you do physically — and the outcome of your judgment matters to their financial result — you likely have E&O exposure.

Real Scenarios.

What professional liability claims actually look like — and why GL wouldn’t cover them.

These are the types of claims that trigger E&O coverage — and that would be denied under a standard general liability policy.

01
A design error requires expensive rework
A pool designer specifies the wrong pump capacity for a large residential pool. The pool is built to spec, but the system underperforms. The client demands the cost of correcting the system — a significant sum. This is a professional liability claim against the designer’s specifications, not a physical damage claim. GL won’t touch it. E&O covers the defense and the damages.

03
A software project is delivered late or with defects
A software developer misses a delivery deadline or delivers code with significant bugs that disrupt a client’s operations. The client pursues damages for lost revenue and remediation costs. Technology E&O covers these claims — which are among the most common in professional services and can be large relative to the original project size.

05
A real estate transaction results in a dispute
A real estate agent fails to disclose a known issue or makes a representation that turns out to be inaccurate. The buyer suffers financial harm and pursues a claim. Real estate professional liability — a specific form of E&O — covers these disputes, which are among the most litigated professional liability claims in Texas.

02
A consultant’s recommendation leads to a financial loss
A business consultant advises a client to pursue a specific strategy or investment. The strategy fails. The client claims the advice was negligent and pursues damages. Whether or not the advice was actually negligent, the claim must be defended. E&O covers the defense costs and any awarded damages through the entire process.

04
An arborist recommends keeping a tree that later fails
An arborist assesses a large tree and recommends it’s healthy enough to stay. The tree later falls and causes significant property damage. The property owner sues the arborist for the cost of the damage, claiming the assessment was negligent. The arborist’s liability for making a bad professional call is an E&O exposure — not a GL claim.

06
A missed deliverable or deadline causes downstream losses
A contractor or service provider fails to complete work on schedule, causing a client to miss a deadline, lose a contract, or incur additional costs. The client claims the delay constitutes professional negligence and pursues damages for their downstream losses. E&O covers the claim that the failure to perform as agreed caused financial harm.

Important: How E&O Policies Are Structured

Professional liability is almost always claims-made — not occurrence-based. That distinction matters.

Most commercial insurance — GL, commercial auto, workers’ comp — is written on an occurrence basis. That means the policy that was active when the incident happened is what responds, even if the claim is filed years later.

Professional liability works differently. E&O is almost always written on a claims-made basis — meaning the policy that’s active when the claim is filed is what responds, not the policy that was active when the work was done. If your policy lapses or you switch carriers, claims filed after the policy ends may not be covered — even for work you did while the policy was active.

This is why continuity of coverage matters with E&O, and why we discuss retroactive dates, extended reporting periods, and tail coverage when setting up or changing your professional liability policy. These aren’t small details — they’re the difference between being covered for past work and not being covered.

Key terms to understand on a claims-made E&O policy:

Retroactive date: The earliest date from which claims can arise and still be covered. Work done before the retroactive date is not covered even if a claim is filed during the active policy period.

Extended reporting period (tail): An optional extension that allows claims to be filed after the policy ends for work done while it was active. Critical when switching carriers or retiring from practice.

Prior acts coverage: Coverage for work performed before the policy’s inception date — provided the retroactive date is set back far enough to capture that work.

Why Get Your E&O Coverage Through McKnight

Professional liability varies significantly by profession, industry, and policy form.

E&O is not a standardized product the way GL is. The coverage forms, exclusions, retroactive dates, and claims-made structure all vary meaningfully by carrier and by profession. A technology E&O policy looks very different from a design E&O policy, which looks different from a real estate E&O policy. Getting the right form for your specific type of professional service matters as much as getting adequate limits.

We also make sure clients understand the claims-made structure before they sign — specifically the retroactive date, what prior work is covered, and what happens to coverage if they change carriers or let the policy lapse. These are the details that determine whether you’re actually protected for the work you’ve already done, not just the work you’re about to do.

As an independent agency we work with carriers that write E&O across a broad range of industries and professions. We find the right form and the right carrier for your specific type of work, and we review the policy language with you before placement.

Right form for your profession
E&O coverage forms vary by industry. We match the policy to your specific type of professional service — not a generic form.

Claims-made structure explained clearly
We walk through retroactive dates, tail coverage, and continuity of coverage before you sign — not after a claim reveals a gap.

100+ carriers
We shop the market across carriers that write your specific profession to find the right coverage at the most competitive rate.

Real answers when you call
817.277.6166, weekdays 8:30–5pm. Questions about coverage scope, past work, or a claim situation — we pick up.

FAQ

Professional liability / E&O questions we hear all the time.

What is professional liability insurance and what does it cover?
Professional liability insurance — also called errors and omissions (E&O) — covers claims that your professional service, advice, design, or work caused a client financial harm. It pays for legal defense costs and any damages awarded, up to your policy limits. It covers errors (mistakes in your work), omissions (things you failed to do), and negligent advice or recommendations. Importantly, it covers the cost of defending claims even when the claim is without merit — because legal defense itself is expensive regardless of the outcome.
Doesn’t my general liability cover professional mistakes?
No — general liability covers physical injury to people or physical damage to others’ property caused by your operations. It explicitly excludes claims arising from professional services, advice, design, or errors in your work product. If a client claims your professional judgment or output caused them financial harm — not physical harm — GL will deny the claim. Professional liability is a separate, distinct coverage that addresses this specific exposure. Businesses that provide any form of professional service need both.
Do I need E&O if I’m a contractor, not a consultant?
It depends on what your contracting work involves. If you only perform physical labor and installation from someone else’s plans, your GL likely covers most of your exposure. But if you also design, specify, assess, recommend, or consult — even informally as part of your service — you have professional liability exposure. Pool builders who design pools, tree service companies that assess tree health, landscapers who design irrigation systems — all of these businesses have a professional services component that GL doesn’t cover. If clients rely on your judgment, not just your labor, E&O deserves a conversation.
What is a claims-made policy and why does it matter for E&O?
Most insurance is occurrence-based — the policy active when an incident happened is what covers the resulting claim, even years later. Professional liability works differently. E&O is almost always claims-made — the policy active when the claim is filed is what responds, not the policy from when the work was done. This means if your E&O policy lapses or isn’t renewed, claims filed after expiration may not be covered even for work done during the active policy period. Continuity of coverage matters with E&O in a way it doesn’t with GL or auto.
What is a retroactive date and why does it matter?
A retroactive date is the earliest point from which claims can arise and still be covered under your E&O policy. If a claim arises from work you performed before the retroactive date, it’s not covered — even if the claim is filed while your policy is active. When you first obtain E&O coverage, the retroactive date is typically set at the policy inception date. As you renew, keeping the retroactive date back protects your past work. If you switch carriers, making sure the new policy’s retroactive date goes back far enough to cover prior work is critical — this is one of the most important details we manage when a client changes their E&O carrier.
What is tail coverage and when do I need it?
Tail coverage — also called an extended reporting period — allows you to report claims after your E&O policy expires or is cancelled, for work you performed while the policy was active. It’s most important when you’re retiring, closing the business, or switching carriers and won’t have continuous coverage. Without tail coverage, claims that arise after the policy ends for work done during the active period may not be covered. Tail coverage can be expensive, but for businesses with significant past professional exposure, it’s essential protection against delayed claims.
Can I be sued for a professional liability claim even if I didn’t make a mistake?
Yes — and this is one of the most important reasons to carry E&O. A client who is unhappy with an outcome or who suffered a financial loss can file a professional liability claim regardless of whether your work was actually negligent. The claim still needs to be defended, which means legal fees, time, and disruption — even when you’re ultimately vindicated. E&O covers those defense costs regardless of the claim’s merit, which is why it’s valuable even for professionals who are confident in the quality of their work.
How much professional liability coverage do I need?
It depends on the size and value of your client engagements, your industry, and what your contracts require. The starting point for most small to medium businesses is $1M per claim and $1M or $2M aggregate. If you’re working on large projects, advising clients on significant financial decisions, or your contracts specify minimum E&O limits, you may need more. Some professions — engineers, architects, financial advisors — face larger potential claims that warrant higher limits. We look at your actual work and recommend limits that reflect your real exposure.

Get Started

Let’s make sure your professional work is protected — not just your physical operations.

Call us or request a quote. We’ll match the right E&O form to your specific profession, explain the claims-made structure clearly, and make sure your past and future work is covered correctly.

McKnight Insurance Services  ·  Mansfield, TX  ·  Same-day certificates  ·  Weekdays 8:30am–5pm