What is a WSIB clearance certificate?
Quick answer
A WSIB clearance certificate is a document from Ontario's Workplace Safety and Insurance Board confirming that a business is registered with the WSIB and that its account is in good standing. Businesses that hire contractors — including carriers — request one because it confirms the contractor's workers are covered for workplace injuries and helps protect the hiring business from liability for the contractor's unpaid premiums. Current rules and validity periods should be confirmed with the WSIB directly.
If you’ve been asked for a “WSIB clearance” — or you’re wondering whether to ask a carrier for one — the concept is simpler than the name suggests. It’s Ontario’s standard way for one business to confirm that another business’s workplace injury coverage is real and paid up. Here’s what the certificate actually says, why it shows up in freight relationships, and where its limits are.
What the certificate confirms
The WSIB — Workplace Safety and Insurance Board — runs Ontario’s workplace injury insurance system. Employers in covered industries register with the WSIB, pay premiums based on their payroll and industry classification, and in return their workers are insured for workplace injuries through the provincial system rather than through private policies or lawsuits.
A clearance certificate is the WSIB’s confirmation, produced on request, that a specific business is registered and that its account is in good standing at the time of issue. In plain terms it answers two questions: does this company participate in the system, and are they current with it?
What it is not: a safety rating, a licence, or any statement about the company’s on-road record. A carrier with a spotless clearance could still have a poor safety history, which is tracked in an entirely different system — the CVOR. The clearance speaks to one narrow, financial-and-coverage question, and it speaks to it well.
Why businesses ask carriers for one
The reason hiring businesses care isn’t curiosity — it’s liability that can travel. Ontario’s workplace insurance framework includes the concept of a principal (the business hiring a contractor) being exposed when the contractor hasn’t met its WSIB obligations. In construction, obtaining clearances is mandatory; in other industries, including transportation, requesting them is widespread practice because it manages the same underlying risk.
For a shipper, two practical concerns drive the request:
- Coverage on your premises. Carrier drivers work at your dock — loading, strapping, wheeling pallet jacks. If a driver is injured at your facility, you want certainty that they’re covered through the WSIB system rather than looking to you.
- Exposure to unpaid premiums. A clearance confirms the carrier’s account is in good standing, which is your evidence of diligence if the carrier’s obligations are ever in question.
Neither risk materializes often. Like most compliance checks, the clearance matters precisely because you only discover its absence during a bad week. Our post on WSIB clearance and carrier requirements goes deeper on how these obligations attach to trucking specifically.
How clearances are checked in practice
The WSIB provides an online clearance service where businesses can request and verify clearances electronically — the modern flow is less “paper certificate in a drawer” and more “look it up when you need it.” A typical pattern among businesses that hire carriers on an ongoing basis:
- Request a clearance (or ask the carrier to provide one) before the relationship starts.
- Note the validity period — clearances are time-limited, not permanent.
- Re-verify on a schedule, often aligned with how frequently the company re-checks insurance certificates.
Because the mechanics and validity periods are set by the WSIB and can change, treat the WSIB’s own published guidance as the authority on current process. The principle, though, is stable: verification comes from the system itself, not from a document the contractor hands you — the same logic behind getting insurance certificates directly from a broker, covered in our answer on what insurance a freight carrier should have.
Where the clearance fits in a carrier check
A clearance certificate is one item in a short, sensible due-diligence stack, and it’s worth being clear about which question each item answers:
- WSIB clearance — are their workers covered, and is their account in good standing?
- Certificate of insurance — are their vehicles, operations and your freight backed by real policies?
- CVOR record — how do their trucks actually perform on the road?
- References and business checks — is this a real, established operation?
No single document substitutes for another, which is why experienced shippers collect the stack rather than stopping at whichever document arrives first. The full sequence is laid out in our answer on verifying that a carrier is legitimate.
It’s also worth saying that a carrier’s reaction to the request is itself informative. Clearances are routine in Ontario commercial life — an established carrier has produced them many times and responds without friction. Confusion or delay at the request tells you something about how the back office runs.
The limits of what a clearance tells you
Keep the certificate in proportion. It’s a point-in-time statement about one obligation, and it doesn’t cover the questions shippers most often care about day to day: whether freight arrives intact, whether the carrier communicates, whether the same people answer the phone next month. Compliance documents screen out the operations you shouldn’t hire; they don’t identify the ones you’ll be glad you did. That part still comes down to how the carrier actually runs — which is the argument of our broader post on why carrier compliance matters.
Sonic Transport is a Mississauga-based B2B carrier moving freight across the GTA, Golden Horseshoe and Southern Ontario, and questions like these are normal parts of onboarding a new shipper — bring them along when you request a quote for your next same-day direct shipment, and you’ll get direct answers from a person who knows your account.
Related questions
Is a WSIB clearance the same as insurance for my freight?
No. A clearance speaks only to workplace injury coverage for the carrier's own workers and the standing of the carrier's WSIB account. Coverage for the freight itself comes from the carrier's cargo insurance and the liability terms of the contract of carriage, which are checked separately through a certificate of insurance.
How long does a clearance certificate stay valid?
Clearances are time-limited — they reflect the account's standing for a stated period, not permanently. Businesses that work with a contractor on an ongoing basis typically re-verify on a schedule rather than relying on an old certificate. The WSIB publishes current validity practices, so confirm the details there.
Does every carrier in Ontario have to be registered with the WSIB?
Most Ontario businesses with workers are required to register, and transportation is generally among the industries where coverage is mandatory. Requirements vary with how a business is structured — sole operators and subcontractor arrangements have their own rules — so the WSIB itself is the authority on whether a specific operation must register.