In Ontario, the construction and maintenance electrician trade (309A) is compulsory: you need a Certificate of Qualification, or to be a registered apprentice, to do the work. Many apprentices and newcomers search for how the process works, from hours to the exam. This guide collects the verified official Ontario facts, each with its source.
We explain the steps in plain English, while every requirement, number and fee is quoted from an official page. The Red Seal guide explains how the Ontario trade name maps to the national Construction Electrician trade.
Before you apply: a practical checklist
- Confirm which license you need. Is it a contractor (business) license, an individual trade license, or both? The scope label on each fact above tells you which one it describes.
- Collect proof of experience early. Boards usually want employer-signed records, and gathering them takes longer than people expect.
- Read the exam information on the official page before you book: provider, reference books allowed, and how retakes work.
- Budget for every fee, not just the application. Exam, license and renewal fees are often separate.
- Check local rules. Cities and counties can add their own registration or permit requirements.
- Keep your renewal date and any continuing education in your calendar once you're licensed.
Verified facts at a glance
Ontario electrician (309A)
Here is what the official Ontario pages we checked actually say. Each point is quoted from our reviewed record with its source; for the full picture, including anything still pending review, see our Ontario electrician license requirements page.
Licensing authority
- Skilled Trades Ontario: 647-847-3000, toll-free (Ontario) 1-855-299-0028. (Individual worker certificate) — source: Current apprentices - Skilled Trades Ontario, verified 2026-10-18
Is a state/provincial license required?
- Compulsory trade: you must hold a Registered Training Agreement, Provisional Certificate of Qualification or Certificate of Qualification to practise. (Individual worker certificate) — source: Electrician - Construction and Maintenance - Skilled Trades Ontario, verified 2026-10-18
Experience / hours
- Electrician – Construction and Maintenance (309A): 9,000 hours (about 5 years) = 8,160 on-the-job + 840 in-school. (Individual worker certificate) — source: Electrician - Construction and Maintenance - Skilled Trades Ontario, verified 2026-10-18
Exam
- Certifying exam; on passing, Skilled Trades Ontario issues a Certificate of Qualification. (Individual worker certificate) — source: Electrician - Construction and Maintenance - Skilled Trades Ontario, verified 2026-10-18
Fees
- Exam fee $150 + HST; first attempt free for apprentices with completed training agreements. (Individual worker certificate) — source: Finish an apprenticeship - Skilled Trades Ontario, verified 2026-10-18
Reciprocity & endorsement
- Part of the Interprovincial Red Seal Program (national standard across Canada). (Individual worker certificate) — source: Electrician - Construction and Maintenance - Skilled Trades Ontario, verified 2026-10-18
How to use this guide
- Every fact above links to the official page it came from, with the date we checked it. Rules change — confirm with the board before you apply or pay.
- To check whether a specific person or company holds a license, use our license lookup (TX, CA, WA, OR, NY and Québec RBQ data) or the board's own search.
- Moving between states or provinces? See the electrician reciprocity matrix and our Red Seal guide.
FAQ
How much does it cost? (Ontario electrician (309A))
Exam fee $150 + HST; first attempt free for apprentices with completed training agreements. (Individual worker certificate) — source: Finish an apprenticeship - Skilled Trades Ontario, verified 2026-10-18
What exam is required? (Ontario electrician (309A))
Certifying exam; on passing, Skilled Trades Ontario issues a Certificate of Qualification. (Individual worker certificate) — source: Electrician - Construction and Maintenance - Skilled Trades Ontario, verified 2026-10-18
How much experience do I need? (Ontario electrician (309A))
Electrician – Construction and Maintenance (309A): 9,000 hours (about 5 years) = 8,160 on-the-job + 840 in-school. (Individual worker certificate) — source: Electrician - Construction and Maintenance - Skilled Trades Ontario, verified 2026-10-18