In Ontario commercial insurance, professional liability insurance and Errors and Omissions (E&O) insurance refer to the exact same coverage. Terminology varies primarily by sector—engineering, architecture, and healthcare typically use "professional liability," while consultants, financial services, and IT specialists use "E&O". Regardless of the title, this policy protects Ontario professionals against allegations of financial loss caused by an error, omission, oversight, or negligent professional advice.
Covers specialized advice & work
Covers physical and bodily incidents
CPA Ontario requires:
Professional engineers Ontario requires formal disclosure of insurance status; firms with a Certificate of Authorization must meet strict compliance protocols.
Ontario Association of Architects requires mandatory E&O coverage administered through Pro-Demnity Insurance Company.
Real Estate Council of Ontario requires mandatory provincial E&O group insurance program required for active registration.
Law Society of Ontario requires mandatory E&O policy minimums enforced through LawPRO.
CPA Ontario requires:
Professional engineers Ontario requires formal disclosure of insurance status; firms with a Certificate of Authorization must meet strict compliance protocols.
Ontario Association of Architects requires mandatory E&O coverage administered through Pro-Demnity Insurance Company.
Real Estate Council of Ontario requires mandatory provincial E&O group insurance program required for active registration.
Law Society of Ontario requires mandatory E&O policy minimums enforced through LawPRO.
If you offer professional advice you should have E&O.
E&O Insurance isn't standardized and is often placed through specialized markets. Our professional liability team will help you understand your options so you can feel confident you're protected.
Unlike automobile or standard property policies, professional liability insurance in Canada is written almost universally on a claims-made basis. Your policy must be active both when the work was performed and when the lawsuit is formally filed against you. If you cancel or let coverage lapse upon retirement or closing without securing tail coverage (Extended Reporting Period), you will have zero protection against claims filed today for past work.
In Canadian E&O policies, legal defence expenses, including attorney fees, expert witnesses, and court costs, are typically inside the policy limit. Every dollar spent defending your business directly reduces the remaining limit available to pay settlements.
Unlike automobile or standard property policies, professional liability insurance in Canada is written almost universally on a claims-made basis. Your policy must be active both when the work was performed and when the lawsuit is formally filed against you. If you cancel or let coverage lapse upon retirement or closing without securing tail coverage (Extended Reporting Period), you will have zero protection against claims filed today for past work.
In Canadian E&O policies, legal defence expenses, including attorney fees, expert witnesses, and court costs, are typically inside the policy limit. Every dollar spent defending your business directly reduces the remaining limit available to pay settlements.
An independent software consultant provides custom database architecture for an e-commerce firm. A coding oversight causes a critical server outage resulting in lost sales and cyber remediation. A tailored E&O policy covers the legal defence costs and final negotiated settlement.
A financial firm recommends an asset reallocation strategy. The client later alleges the advice violated their risk profile following market shifts. E&O insurance funds the legal defence and expert reviews needed to protect the practice.
An engineering firm plans stormwater drainage for a commercial build. A capacity calculation oversight during a major storm causes localized flooding and project delays. Professional liability covers rework and delay claims. (Read our full Ontario Engineering Insurance Guide for technical analysis).
An independent software consultant provides custom database architecture for an e-commerce firm. A coding oversight causes a critical server outage resulting in lost sales and cyber remediation. A tailored E&O policy covers the legal defence costs and final negotiated settlement.
A financial firm recommends an asset reallocation strategy. The client later alleges the advice violated their risk profile following market shifts. E&O insurance funds the legal defence and expert reviews needed to protect the practice.
An engineering firm plans stormwater drainage for a commercial build. A capacity calculation oversight during a major storm causes localized flooding and project delays. Professional liability covers rework and delay claims. (Read our full Ontario Engineering Insurance Guide for technical analysis).
Navigating policy forms, endorsements, exclusions, and regulatory minimums requires specialized, local market knowledge. At Roughley Insurance Brokers, we have provided trusted insurance guidance to Ontario businesses and families since 1945.
Family-owned and independently operated for three generations, our deep roots in Oshawa, Bowmanville, and Port Perry mean we understand the real operational risks Ontario businesses face every day.
As a RIBO-licensed broker, Roughley holds direct, in-house Lloyd’s of London underwriting capacity for complex commercial liability lines. This gives us access to specialty markets that generalist brokerages cannot reach.
Our commercial team includes licensed insurance experts working alongside leadership with professional engineering credentials (such as Rob Roughley, P.Eng.). We review blueprints, client contracts, and scope-of-work documents with technical rigor so your coverage matches your real liabilities.
We don't direct you to a distant call centre during a lawsuit. Our dedicated in-house claims team acts as your active advocate, ensuring your insurer handles your file promptly and fairly.
Yes. Errors and Omissions (E&O) insurance and professional liability insurance are identical policy types under different names. Terminology varies by sector—consultants and financial agents typically refer to E&O, whereas engineers, architects, and healthcare professionals use professional liability.
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