Most commercial contracts in Ontario require a valid clearance before work can begin and before final payments are released.
If you are a constructor verifying a subcontractor: wsib clearance certificate online
A clearance certificate is valid only for a specific period (often 30 to 90 days). If a project lasts longer than the validity period, you must request a new one to ensure coverage remains active. Most commercial contracts in Ontario require a valid
You can access the search tool directly via the WSIB website: wsib.ca wsib clearance certificate online