Costly Mistakes and Official Sources
Business insurance mistakes that cost Canadian companies a claim
The disclosure errors, coverage gaps and claim-handling mistakes that most often lead to reduced or denied business liability claims in Canada, and how to avoid each one.
Most business liability claims that go wrong in Canada fail for ordinary reasons, not exotic exclusions: the business described its activities incompletely, under-reported revenue, carried a limit lower than its lease or contract required, reported a claim late, admitted fault or paid a claimant without the insurer's consent, or assumed its CGL covered something it never did, such as a data breach or a professional error. Each of these can be avoided with a few minutes of checking at renewal and a clear plan for what to do when something happens.
This guide is the overview for the costly mistakes and official sources section and links to every guide in it. The scenarios below are illustrative patterns, not accounts of real cases.
The mistakes, at a glance
| Mistake | What can happen | How to avoid it |
|---|---|---|
| Vague or incomplete business description | Claim from an undisclosed activity disputed or reduced | Describe every activity and its share of revenue |
| Revenue or payroll understated | Audit bill, and possible misrepresentation argument | Give honest estimates and update mid-year |
| Limit below the contract requirement | Breach of lease or contract; uninsured excess | Read every insurance clause before signing |
| Late notice of a claim or incident | Insurer may deny if prejudiced, or claims-made cover lost | Report incidents promptly, in writing |
| Admitting liability or paying the claimant | Policy condition breached; insurer may refuse to reimburse | Be courteous, collect facts, let the insurer handle it |
| Switching E&O and losing the retroactive date | Claims about past work uninsured | Keep the retroactive date or buy a tail |
| Assuming CGL covers data breaches | Breach costs and privacy claims uninsured | Consider a cyber policy |
| No certificates from subcontractors | Higher premium, and you absorb their claims | Collect certificates and clearances before work starts |
| Tenants' legal liability too low | Rebuilding costs for rented premises fall on you | Match TLL to the replacement value you are responsible for |
| Policy lapses for non-payment | Uninsured from the cancellation date | Keep instalments funded; watch for notices |
| Buying from an unlicensed seller | Policy may not exist or not respond | Check the licence on the provincial register |
1. Disclosure mistakes
The application is the foundation of the policy. In the common-law provinces, a material misrepresentation can allow the insurer to void the policy. In Quebec, the Civil Code applies a proportional rule to honest mistakes in damage insurance: the insurer pays the share of the claim that the premium charged bears to the premium it should have charged, unless it would not have covered the risk at all or the client acted in bad faith.
Illustrative pattern. A renovation contractor describes itself as doing "interior finishing", but also does small structural changes. When a removed wall leads to a sagging floor in a client's house, the insurer investigates and finds the structural work was never disclosed. The guide on disclosure and misrepresentation works through how this plays out in common-law provinces and in Quebec.
2. Coverage gap mistakes
- Claims-made gaps. Professional liability, D&O and cyber policies are usually claims-made. Changing insurer, letting a policy lapse or retiring without an extended reporting period can leave claims about past work with no policy. See claims-made gaps and retroactive dates.
- Limits that are too low. A serious injury claim can exceed $2 million. See what happens when a lawsuit exceeds the limit.
- Cyber and privacy. CGL wordings usually exclude electronic data and breach costs. See cyber and privacy breach gaps.
- Care, custody or control. Damage to property you are working on or storing for a client is usually excluded unless an endorsement adds it back.
- Vehicles. Owned vehicles need commercial auto insurance; employees' own cars used for business need non-owned automobile liability.
3. Claim-handling mistakes
Most liability policies require you to:
- Notify the insurer promptly of an occurrence, claim or lawsuit, in writing. In Quebec, article 2470 of the Civil Code requires notice of a loss as soon as you become aware of it.
- Forward every document you receive, such as a demand letter or a statement of claim, immediately. Court deadlines to file a defence are short.
- Not admit liability, settle or make payments without the insurer's consent, except for immediate first aid or emergency measures.
- Cooperate with the insurer's investigation and defence.
Illustrative pattern. A café owner, wanting to keep a customer happy after a fall, offers to pay the customer's lost wages and says the floor "should have been dried". Weeks later a lawyer's letter arrives claiming far more. The insurer can still defend, but the admission and the voluntary payment complicate the defence, and the insurer may refuse to reimburse the payment.
4. Paperwork and payment mistakes
- Certificates sent to landlords and clients that promise endorsements the policy does not contain.
- Policies financed monthly and cancelled after a missed payment, unnoticed until a claim.
- A renewal not bound because the broker never received the signed application.
- Old policies discarded, so an occurrence-based claim years later cannot be matched to a policy.
Keep a folder with every policy, certificate, application and correspondence for at least as long as claims could arrive, which for occurrence policies can be many years.
When something has gone wrong
If an insurer has refused or reduced a claim, see denied claims and complaints for the escalation route in each province, including the General Insurance OmbudService and the AMF in Quebec. For regulators and official sources in every province, see the official sources directory.
Frequently asked questions
Can an insurer deny a claim for late notice?
It depends on the wording, the province and whether the delay prejudiced the insurer. For claims-made policies, failing to report within the policy period or reporting window can be fatal to the claim. Report promptly to avoid the question.
Should I tell my insurer about an incident that may never become a claim?
Usually yes, especially under claims-made policies that allow you to report "circumstances". Ask your broker how to give notice without it being treated as a claim.
What if I made a mistake on my application?
Tell your broker and insurer as soon as you notice, and ask for the policy to be corrected. Fixing it before a loss is far better than explaining it after.
Is it worth having a lawyer review my insurance?
For complex contracts, large projects or a disputed claim, yes. A coverage lawyer can read the policy against the contract and the claim.
Sources
- General Insurance OmbudService — independent dispute resolution for member P&C insurers
- Autorité des marchés financiers — Quebec complaints and dispute resolution
- LégisQuébec — Civil Code of Québec rules on disclosure and notice
- Financial Services Regulatory Authority of Ontario — Ontario insurance complaints
- Insurance Bureau of Canada — business insurance consumer information
