Commercial Insurance · Windsor-Essex
Professional Liability (E&O) Insurance
When a client alleges your professional advice, design, analysis, or service caused them a financial loss, professional liability — also called errors and omissions (E&O) — may help with defence costs and certain settlements or judgments, subject to the policy you purchase. That is a different risk from slip-and-fall general liability, office property, cyber breach response, or directors and officers coverage. Most commercial E&O forms are claims-made, meaning when and how a claim is reported, your retroactive date, and any extended reporting period matter as much as the limit on the declarations page. Premium Insurance Brokers can help Windsor–Essex professionals compare markets for how you actually practise — including contract requirements, subcontractor use, and any regulator or association standards that apply to your occupation.
For Windsor–Essex professionals and firms that charge for advice, design, analysis, or specialized services — including accountants, consultants, engineers, architects, financial advisors, IT consultants, and other regulated or credentialed occupations — reviewed through an independent broker who can compare claims-made E&O markets, retroactive dates, and contract certificate requirements for how you actually work.
What's covered
Professional liability is organized here by the type of work you perform — because the allegation, the contract, and any regulatory context differ by profession. Each coverage responds to financial-loss claims tied to professional services, not ordinary premises injury or property damage.
A reporting mistake can become a client loss claim: Clients may allege missed deadlines, calculation errors, or flawed advice caused tax penalties, audit costs, or lost financing. For CPA Ontario firms engaged in public accounting or providing accounting services to the public, Regulation 14-1 sets minimum professional liability limits by firm size — separate from what any single client contract requires. Bookkeepers and non-public accounting firms may still face contractual E&O requirements even when CPA firm rules do not apply. Confirm which services you perform are disclosed and covered under your policy wording.
A reporting mistake can become a client loss claim
Clients may allege missed deadlines, calculation errors, or flawed advice caused tax penalties, audit costs, or lost financing. For CPA Ontario firms engaged in public accounting or providing accounting services to the public, Regulation 14-1 sets minimum professional liability limits by firm size — separate from what any single client contract requires. Bookkeepers and non-public accounting firms may still face contractual E&O requirements even when CPA firm rules do not apply. Confirm which services you perform are disclosed and covered under your policy wording.
Practical considerations
The Premium difference
Why a broker?
One relationship. Multiple markets. Coverage explained in plain language.
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Your operation
Your industry, locations, and how the business actually runs day to day.
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Multiple insurance markets
Independent access to commercial carriers — options compared side by side.
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Premium broker
Windsor-Essex guidance that translates policy wording into decisions.
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Right-fit coverage
Protection aligned to your operations — not generic off-the-shelf limits.
A lot to protect? Good thing we have options.
One policy is rarely the whole picture. Explore other commercial coverage from Premium.
Professional liability FAQ
Straight answers on how E&O differs from other commercial coverages and what matters when contracts or regulators ask for proof.
Commercial general liability typically addresses certain third-party bodily injury and property-damage claims arising from your premises or operations. Professional liability or E&O may address certain claims alleging financial loss caused by your professional services, advice, design, or analysis — subject to policy terms and exclusions. A client slip-and-fall at your office is a different allegation from a client alleging your report caused them a tax penalty or project loss. Many professionals need both coverages when they operate from premises and deliver advice.
Ready when you are
Provide professional advice or design?
Tell us your profession, services, revenue, contract requirements, retroactive date, and claims history — we will compare E&O markets that understand your work.