What is contractor liability insurance in Ontario?
Contractor liability insurance, or commercial general liability (CGL), is a specialized policy that protects Ontario tradespeople from financial loss due to third-party claims of bodily injury, property damage, or advertising injury. In Ontario, most commercial contracts and municipal tenders require a minimum of $2 million in coverage to protect against legal defence costs and settlements.
As a contractor in Eastern Ontario, your reputation is built on the quality of your finish and the reliability of your word. However, in a high-stakes industry like construction—whether you are an electrician in Kanata, a carpenter in Almonte, or a landscaper in Manotick—one accidental slip or a damaged utility line can lead to a lawsuit that threatens your entire livelihood.
At Oegema, Nicholson & Associates, we have been supporting and protecting Ottawa’s contractors since 1961. As an independent brokerage, we shop the market to find competitive, comprehensive liability coverage so you can focus on the job site with peace of mind.
How Does Commercial General Liability (CGL) Work?
Commercial general liability (CGL) is the foundational safety net for your business. It handles the costs of legal defence, settlements, and medical expenses if your business is held liable for an accident on or off the job site. This isn’t just “paperwork”. If a client trips over your equipment or a subcontractor accidentally damages a neighbouring property, CGL is what stands between your business assets and a devastating legal bill
What Does Contractor Liability Typically Cover?
Third-Party Bodily Injury: Covers medical bills and legal fees if a non-employee (like a client or passerby) is injured because of your operations.
Third-Party Property Damage: Protection if you accidentally damage a client’s home, a vehicle, or a utility line during construction.
Completed Operations: Protects you if a problem arises from your work after the project is finished (e.g., a faulty pipe bursts months later).
Legal Defence Costs: Even if a claim is groundless, the cost to defend yourself in court can be astronomical; your CGL policy handles these expenses.
What Contractor Liability Does Not Cover
Understanding exclusions is just as important as understanding what’s included:
Your own tools and equipment: A CGL policy won’t pay out if your generator is stolen or your drill press is destroyed in a fire. That requires a separate Tools and Equipment Floater.
Your employees’ injuries: Workplace injuries for employees are handled through WSIB (Workplace Safety and Insurance Board) in Ontario, not your liability policy.
Professional errors and design mistakes: If you’re providing design advice or engineering-adjacent services, a standard CGL may not cover errors in your professional judgment. You’d need Errors & Omissions (E&O) coverage for that.
Intentional acts: Liability insurance is for accidents, not deliberate wrongdoing.
Automobile liability: If your work truck is involved in an accident on the road, that falls under your commercial auto policy, not your CGL.
How Much Does Contractor Liability Insurance Cost in Ontario?
Costs vary considerably depending on your trade, business size, annual revenue, and claims history. That said, here are rough benchmarks to set expectations:
- Low-risk trades (painting, flooring, finish carpentry): $500–$1,200/year for $2M in coverage
- Mid-risk trades (plumbing, electrical, HVAC): $1,000–$2,500/year
- Higher-risk trades (roofing, excavation, structural work): $2,000–$5,000+/year
These are general ranges; your actual premium will depend on your specific operations. A roofer with a clean claims history and low annual revenue will pay significantly less than one with a previous claim and a large crew.
Factors that drive premiums up include: working at heights, operating heavy equipment, doing structural or foundation work, having subcontractors, and working on older buildings.
Liability vs. Property: Understanding the Difference
While liability insurance protects you against claims made by others, it does not cover your own assets. Liability coverage is for “third-party” risks, whereas property or equipment insurance is required to protect your own tools, machinery, and materials against theft, fire, or accidental damage.
Contractor Coverage Comparison Table
| Feature | Commercial General Liability (CGL) | Tools & Equipment Floater |
| Primary Goal | Protects against lawsuits from others. | Protects your own business assets. |
| Common Scenario | A client slips on a wet floor you just mopped. | Your $5,000 generator is stolen from your truck. |
| Is it Required? | Usually mandatory by contract or tender. | Highly recommended for risk management. |
| Covers Legal Fees? | Yes, for third-party injury/damage suits. | No, covers repair/replacement costs. |
Is Contractor Liability Insurance Mandatory in Ontario?
The short answer: not always by law, but effectively yes in practice.
The Ontario government does not universally mandate CGL for all trades through a single piece of legislation. However, the market has essentially made it a de facto requirement in the following situations:
Commercial contracts and tenders: Almost every municipal tender, general contractor agreement, or commercial client contracts in Ontario will require you to carry a minimum of $2 million in CGL coverage before you’re permitted on site. No certificate of insurance (COI), no contract.
Licensing requirements for certain trades: Some regulated trades in Ontario have insurance requirements tied to their licensing. Electrical contractors, for example, may face insurance requirements through the Electrical Safety Authority (ESA).
Residential work: Homeowners increasingly ask to see proof of insurance before hiring contractors. It’s become a standard part of the vetting process for anyone doing significant renovation work.
The $2 million threshold is the most common minimum you’ll encounter, though larger commercial projects may require $5 million or more. If you’re bidding on municipal or institutional work, review the tender documents carefully – coverage requirements are specified in detail.
Choosing the Right Coverage: Key Questions to Ask
When shopping for a CGL policy, the cheapest option isn’t always the right one. Here are questions worth asking before you sign:
Does the policy include completed operations coverage?
Some lower-cost policies limit or exclude this. It’s essential for most trades.
What are the per-occurrence and aggregate limits?
Per-occurrence is the max for a single claim; aggregate is the total for all claims in a policy year. Make sure both are adequate for your scale of work.
Are subcontractors covered under my policy?
If you hire subs, clarify how the policy treats them. Some policies exclude subcontractor liability entirely.
What is excluded?
Read the exclusions carefully. Some policies exclude certain types of work (e.g., work on roofs above a certain height, or work involving water).
How does the insurer handle claims?
Look for insurers with a strong reputation for claims handling, not just competitive premiums.
Oegema, Nicholson & Associates is an independent insurance brokerage based in the Ottawa area, serving cleaning businesses and other trades across Eastern Ontario since 1961. As an independent broker, ONA shops multiple markets to find coverage matched to your specific operation. Request a free quote or contact the team directly to review your current coverage.
