
What business liability insurance mistakes should you check?

What business liability insurance mistakes should you check?
This checklist is for Ontario business owners and decision makers who are comparing business liability insurance quotes and policy wording. Read this before you sign so you do not assume coverage you do not have. It names the exact mistakes to verify, the policy language to read, and the questions to ask a broker so quotes become comparable.
What business liability insurance covers and what it usually excludes
Commercial general liability policies typically cover third‑party bodily injury and third‑party property damage that arise from your operating activities, plus legal defence costs and settlement amounts for covered claims. Do not assume a CGL policy automatically includes professional errors and omissions, cyber incidents, auto liability for owned vehicles, or pollution remediation. For many of those exposures you will need separate policies or endorsements. For a concise summary of liability products and how they fit your business, see our Business Insurance Liability: Protect Your Business page.
Checklist: 7 mistakes to verify before you buy business liability insurance
Below are seven checks that each stand alone. For each item you will find what wording to read, what question to ask, and what can go wrong if you skip it.
1) Mistaking CGL for professional liability
What to read: the policy declarations and the insuring agreement for exclusions that mention “professional services”, “errors and omissions”, or “rendering of professional advice”.
What to ask: “Does this quote include professional liability or errors and omissions for the services we provide, or is that a separate policy?”
Why it matters: If your work involves advice, design, or client deliverables, a CGL policy often excludes claims that allege negligent advice or professional failure. Without an E&O policy you may face uncovered defence and settlement costs even when a third party sues for professional mistakes.
2) Choosing limits that are too low for contracts or statutory exposure
What to read: required limits in your contracts, lease indemnities, and the policy’s per occurrence and aggregate limits.
What to ask: “Will this policy meet the contractual limits our clients and landlords require, and does it provide per occurrence limits and an annual aggregate?”
Why it matters: Contract clauses commonly ask for specific per occurrence limits and minimum annual aggregates. Meeting a contract minimum may be necessary to win work, but it does not guarantee the limits are adequate if a single large claim or several claims occur in one policy year. Consider whether you need higher per occurrence limits or an excess policy.
3) Overlooking required endorsements and extensions
What to read: the list of endorsements included or available for purchase, and the policy schedule for extensions such as non‑owned automobile coverage, hired auto, tenants’ legal liability, and cross‑liability wording.
What to ask: “Which endorsements are included in this quote and which are optional? Does the policy include primary and non‑contributory wording if a client requires it?”
Why it matters: Many contracts require additional insured status, primary and non‑contributory wording, or coverage for non‑owned autos. Buying a low premium quote that lacks the necessary endorsements creates a gap that can void a contract or leave you paying uninsured losses.
4) Assuming a package policy covers cyber, product or pollution liability
What to read: exclusions for cyber events, product recall, and pollution or environmental damage, plus any separate product liability or pollution extensions offered by the insurer.
What to ask: “Does this policy respond to cyber incidents, product‑related injury or contamination claims, or pollution clean‑up costs, or do those require separate coverage?”
Why it matters: Cyberattacks, product defects, and pollution incidents often produce large, complex claims that CGL excludes or limits. If your operations or products expose you to those risks, secure specialist cyber, product liability, or environmental policies rather than assuming the general liability policy will pay.
5) Not checking insurer wording about subcontractors and additional insureds
What to read: policy wording that defines “insured”, references to subcontractor operations, and the procedure and effect of listing additional insureds on the policy.
What to ask: “Are subcontractors automatically covered when they work for us, or do they need their own coverage? How do you add a client or landlord as an additional insured and what limits apply to that endorsement?”
Why it matters: Some policies provide automatic coverage for subcontractor acts only under narrow conditions. If a client requires you to name them as additional insured, verify whether that status is limited, whether it reduces your available limits, and whether the endorsement changes defence obligations.
6) Relying on a single quote instead of broker market access
What to read: the broker or agent’s disclosures about market access and the carriers quoted.
What to ask: “Which insurers did you quote and which ones can you access for my industry? Can you provide at least three competitive written quotes so I can compare policy wording and price?”
Why it matters: The Ontario government recommends getting multiple quotes to find the best rate and fit. Consulting three or more insurers gives you leverage and helps you identify differences in wording and endorsements that change real coverage, not just premium amounts. For official guidance, see the Ontario government’s business insurance advice.
7) Ignoring broker licence, disclosures and fee structure
What to read: the broker’s RIBO or CISRO conduct documents, compensation disclosure, and any plain‑language explanation of fees.
What to ask: “Can you show your RIBO or CISRO disclosures and explain how you are paid for this placement? Do you provide the full policy wording for review before I bind coverage?”
Why it matters: A licensed broker should provide transparent compensation disclosures and be willing to show full policy wording. That transparency matters when you compare quotes because broker fees, market access, and compensation arrangements affect which insurers and limits are offered.
How to choose limits, aggregates and endorsements for your Ontario business

Decide limits by combining three practical inputs: contract requirements, the value of assets at risk, and industry litigation patterns. For many small businesses a common starting point is a per occurrence limit that meets client or landlord requirements, supplemented by an annual aggregate that reflects the scope of potential claims.
- Prefer higher per occurrence limits when a single severe claim could threaten operations, such as bodily injury from a product defect.
- Use an excess or umbrella policy when you need a cost‑effective way to increase limits across multiple underlying policies.
- Watch aggregate limits carefully: a low aggregate can be exhausted by several smaller claims, leaving the business uninsured for the rest of the year.
Your broker should model a few claim scenarios with you to show how limits and aggregates respond. If you need help comparing endorsement language, our Business Insurance Liability: Protect Your Business page explains common endorsements and when businesses typically add them.
Questions to ask a broker and how to compare quotes
When you receive written quotes, use this checklist to make them comparable:
- Which insurers were quoted and can the broker supply their policy wording?
- Are limits stated per occurrence or aggregate, and are defence costs inside or outside the limit?
- Which endorsements and exclusions are included and which are optional add‑ons?
- Does the policy include primary and non‑contributory wording or additional insured endorsements required by contracts?
- What is the broker’s compensation model, and are any fees charged separately from the premium?
Ask the broker for the exact endorsement forms and read exclusions line by line or have them explained in plain language. The Ontario government recommends starting with at least three quotes to compare price and coverage, not just price alone. For more on how to start shopping, see the Ontario government’s business insurance advice.
Common objections from business owners and how to resolve them

If you think it costs too much, prioritise the exposures that would threaten your ability to operate. If a single claim could close your business or trigger a large settlement, increase your per occurrence limit or buy excess coverage.
If policy wording seems too complex, require that the broker provide a written plain‑language summary and the exact policy forms. If the broker cannot explain how a clause applies to a likely claim scenario, consider a broker with stronger market access or subject matter experience.
If you only need the minimum for a contract, use contract minimums as the floor, not the ceiling. Verify whether the client requires additional insured status or other endorsements that change how limits apply.
Local considerations for Ontario and procurement or landlord requirements
Check municipal procurement and landlord insurance clauses early. Many municipal or crown contracts impose minimum limits and specific additional insured or primary wording. Follow the Ontario government recommendation to obtain multiple quotes as you start shopping so you can prove compliance and also compare wording and limits. Chase Insurance Brokers Ltd. serves businesses across the GTA and Ontario from its office at 400 Dundas St E, Whitby, ON, and works with multiple insurers including Aviva, Intact, Economical, Echelon, Jevco, and Premier to provide competitive options.
Next steps: get comparable quotes, review policy wording, and contact a broker
A short action checklist you can use right now:
- Gather contracts, leases, and recent loss history to share with brokers.
- Request at least three written quotes and the full policy wording for each.
- Ask each broker the specific questions listed in this article and compare endorsements and limits line by line.
- Book a policy review meeting to walk through likely claim scenarios and how each quote responds.
If you want a starting point, read our Business Insurance Liability: Protect Your Business page and then request written quotes from brokers who disclose their market access and compensation. If you would like help comparing quotes or scheduling a policy review, contact a broker who works across multiple Canadian insurers and provides transparent RIBO or CISRO disclosures.
Frequently asked questions
- How much business liability insurance do I need for my Ontario business?
- The amount depends on contract requirements, the value of assets at risk, and your industry exposure. Use contract minimums as a baseline, then consider higher per occurrence limits or an excess policy if a single claim could threaten your operations. Ask your broker to model claim scenarios using your loss history.
- Does commercial general liability cover professional mistakes or do I need separate professional liability insurance?
- Commercial general liability typically excludes professional errors, advice, or design work. If your service includes professional advice or technical deliverables, you will usually need errors and omissions or professional liability coverage in addition to CGL.
- Can I add a client or landlord as an additional insured on my policy and will that change my coverage?
- Yes, many policies allow you to add clients or landlords as additional insureds by endorsement. Confirm whether the endorsement is limited, how it affects your limits, and whether it imposes different defence obligations. Request the exact endorsement form for review.
- How many quotes should I get and why does Ontario recommend three quotes?
- The Ontario government recommends getting at least three quotes to compare price, coverage and policy wording so you can find the best fit for your business and avoid gaps created by low‑priced policies that lack key endorsements. See the Ontario government’s business insurance advice for the official guidance.
Key takeaway: do not buy a policy on price alone. Verify limits, endorsements, exclusions, and broker disclosures so you know exactly how a policy responds to the specific claims your business may face.

