Registering with WCB or WSIB

Every province and territory has a workers' compensation board, and in construction you almost always have to deal with it. Registration is mandatory once you have workers on site, and a general contractor will usually require your clearance letter before letting you onto a job, even if you work alone. Sole proprietors without employees can often take optional personal coverage, and in the trades it is strongly worth having. The board is called WSIB in Ontario, WorkSafeBC in British Columbia, CNESST in Quebec, and WCB or WorkplaceNL elsewhere. Register early, because clearance can take a couple of weeks and you cannot start a contract without it.‍‌‌​​​​‌‌‌‌​‌​‌​​‌‌​​​​​​​‌​​‌​‌‍

What workers' compensation is, and why a general contractor cares

Workers' compensation is a no-fault insurance system funded by employer premiums. If a worker is hurt on the job, the board pays their wage-loss and medical costs, and in return the worker generally cannot sue the employer. For a tradesperson, the part that bites first is not your own coverage but the clearance letter: a document from the board confirming your account is in good standing. A general contractor who hires you as a subcontractor is exposed if you are not covered, so they will demand your clearance letter before you set foot on site. No clearance, no job. That is why even a one-person business often has to register.

Who must register, and who can opt in

The rules differ by province, but the pattern is consistent:

• Incorporated businesses and any business with employees must register, and must pay premiums on their workers' earnings. This is mandatory across the country.
• Sole proprietors and partners with no employees are usually not automatically covered, because the owner is not legally an "employee". Most boards let them buy optional personal coverage, and in construction it is strongly advised: a site injury without coverage means no wage replacement and no medical cost cover.
• Some jurisdictions go further. The Northwest Territories, for example, requires essentially all businesses to register regardless of structure. Confirm your own jurisdiction's rule, because "I work alone so I am exempt" is not safe to assume.

Ontario has its own wrinkle in construction: mandatory coverage extends to many independent operators and sole proprietors in the construction industry, not just those with employees. If you do construction work in Ontario, confirm with WSIB whether you are required to register rather than assuming you can opt out.

The boards by province and territory

Each board runs its own registration portal:

• British Columbia: WorkSafeBC (worksafebc.com)
• Alberta: WCB Alberta (wcb.ab.ca)
• Saskatchewan: WCB Saskatchewan (wcbsask.com)
• Manitoba: the Workers Compensation Board (wcb.mb.ca)
• Ontario: WSIB (wsib.ca)
• Quebec: CNESST (cnesst.gouv.qc.ca)
• New Brunswick: WorkSafeNB (worksafenb.ca)
• Nova Scotia: the Workers' Compensation Board of Nova Scotia (wcb.ns.ca)
• Prince Edward Island: WCB PEI (wcb.pe.ca)
• Newfoundland and Labrador: WorkplaceNL (workplacenl.ca)
• Northwest Territories and Nunavut: the Workers' Safety and Compensation Commission (WSCC)
• Yukon: Yukon Workers' Compensation Health and Safety Board

How registration and premiums work

You register an account with the board for your province, classify your business by industry (construction has its own rate groups), and then pay premiums as a percentage of your workers' insurable earnings. A few practical points:

• Apply early. Boards take time to process. WorkSafeBC, for example, takes roughly 10 business days, so register about 30 days before you need to be on a job, not the day before.
• Premiums are charged per $100 of assessable payroll, up to a maximum assessable earnings ceiling that the board sets each year and that differs by province. Your actual rate depends on your specific construction classification, which the board assigns.
• Construction rates are not a single number you can look up once. Each board assigns industry-class rates that change every year, so confirm your current rate directly with your board rather than relying on a figure from elsewhere. The board's average rate gives a sense of scale but is not what you will pay; your class rate is.
• Keep the account in good standing. Clearance letters are only issued when your account is current. A lapsed account can stop you getting paid on a job.

What it costs, roughly

Because the rate depends on your province and your construction classification, treat any single figure as a guide only and get your real number from your board. As a sense of scale, average premium rates for 2026 sit at $1.23 per $100 of assessable earnings in Ontario (with a maximum assessable earnings ceiling of $121,700), and run higher or lower in other provinces. Your construction class rate will differ from the provincial average, and the assessable earnings ceiling caps the payroll each worker is charged on. For a first-year startup, a few hundred to a couple of thousand dollars is a realistic planning figure for registration and the first premium, but confirm it with your board before you budget.

Common mistakes

• Assuming you are exempt because you work alone. A general contractor's clearance-letter requirement, and mandatory-coverage rules in construction in some provinces, mean many solo operators still have to register.
• Skipping optional personal coverage. A site injury without coverage means no wage replacement and no medical cost cover, out of your own pocket.
• Registering too late. Clearance takes time. Leaving it to the day before a job starts can cost you the job.
• Treating the average rate as your rate. Your premium is set by your construction class, not the provincial average. Confirm the real figure with your board.

How this site is funded →

Spotted something wrong or out of date? Email us at hello@kilnguides.co.uk.

In crisis? 988 Suicide Crisis Helpline (call or text 988) · Mental health support

How this site is funded →