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Safety & Compliance· Updated March 2026· Reviewed by ProScore Editorial Team

Understanding WSIB: What Ontario Homeowners Need to Know

If a worker is injured on your property and the contractor doesn't have WSIB coverage, you could be personally liable. Here's how to protect yourself.

The Workplace Safety and Insurance Board (WSIB) is Ontario's workplace insurance system. For homeowners hiring contractors, understanding WSIB is not optional — it is essential for your financial protection.

What Is WSIB?

WSIB provides no-fault workplace insurance for Ontario workers. When a worker is injured on the job, WSIB covers their medical expenses, lost wages, and rehabilitation costs. In exchange, workers give up the right to sue their employer for workplace injuries.

Why Homeowners Should Care

Here is the critical point most homeowners miss: if you hire a contractor without WSIB coverage and one of their workers is injured on your property, WSIB may classify you as the employer. This means you could be liable for:

  • The worker's medical expenses
  • Lost wage replacement
  • WSIB premiums and penalties
  • Potential lawsuits
  • This is not theoretical. WSIB actively pursues homeowners who hire unregistered contractors when workplace injuries occur.

    How to Verify WSIB Coverage

    Before any work begins, ask the contractor for their WSIB clearance certificate. You can also verify their status directly:

  • 1.Visit the WSIB website
  • 2.Ask for their WSIB account number
  • 3.Request a current clearance certificate (valid for 90 days)
  • ProScore verifies WSIB registration status for all 18,000+ contractors in our database. Look for the WSIB badge on any contractor's profile.

    Which Contractors Need WSIB?

    In Ontario, most construction-related trades are required to have WSIB coverage if they have employees. Independent operators (sole proprietors with no employees) may be exempt but can register voluntarily. Regardless of legal requirements, hiring a contractor with WSIB coverage protects you.

    The Bottom Line

    WSIB verification takes five minutes. The financial consequences of skipping it can last years. Every contractor on ProScore shows their WSIB status clearly on their profile. When you see the WSIB badge, you know you are protected.

    Search for WSIB-verified contractors at proscore.ca.

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