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Trade Playbook

Structural Steel

No provincial trade licence required

Structural steel erection is non-compulsory as a trade, but the work hinges on CWB welding certification and fall-protection/rigging compliance — the credentials owners and engineers actually check.

Structural Steel at a glance

Licence to do the work
Not required as a trade — but structural welding needs CWB qualification
Path in
Ironworkers union apprenticeship (420A) — about 3–4 years
Regulated by
CWB (welding); engineered drawings govern the work
Insurance baseline
$5M CGL on commercial sites
Union route
Ironworkers locals — the dominant route

Where are you right now?

Learn it. Earn it. Own it. Pick the door that matches where you are.

Getting inBecome an ironworkerHow people actually enter this trade: sponsors, registration, hours, and school.Open Getting certifiedFinish your ticketAlready an apprentice? The Last Mile guide: closing out hours, booking the exam, exam day.Open Going out on your ownStart a structural steel businessThe step-by-step from qualified tradesperson to incorporated, insured, bid-ready owner.Open Just lookingCommon questionsLicences, costs, timelines: the questions everyone asks, answered straight.Open

The licensing layer, explained

Ironworker (structural/ornamental 420A, reinforcing 452A) is a voluntary trade. What gates the work is CWB welding certification (CSA W47.1 for the company, W178 for welders), engineered connection compliance, and rigging/fall-protection competency. You incorporate, carry insurance, and qualify your welders.

Certifications in this trade

Insurance to expect

High-consequence structural work with significant fall and rigging exposure. Expect $5M CGL on commercial sites and rigorous safety prequalification.

Go to the source

The official pages that govern this trade. Bookmark these, they are the final word on requirements and fees.

Keep reading

420A Ironworker (Structural & Ornamental)452A Reinforcing RodworkerIncorporationCRA RegistrationWSIB & ProvincialTrade LicensingInsuranceSafety ComplianceOperational SetupBid Readiness

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