OCOntario Certification Registry

Directory

Ontario trade certification records

One record per trade: the trade code, whether certification is compulsory, whether a certifying exam is required, whether an apprentice to journeyperson ratio applies, and whether the trade carries the Red Seal. All classification facts are read directly from O. Reg. 876/21. Construction and industrial sector trades are covered first; more sectors are being added.

Construction sector trades (41)

CodeTradeStatus
424AArchitectural Glass and Metal Technician certification requirementsVoluntaryExamRatioRed Seal
401ABrick and Stone Mason certification requirementsVoluntaryExamRatioRed Seal
244GCement (Concrete) Finisher certification requirementsVoluntaryExamRatio
637CConcrete Pump Operator certification requirementsVoluntaryExam
428AConstruction Boilermaker certification requirementsVoluntaryExamRatioRed Seal
450AConstruction Craft Worker certification requirementsVoluntaryExamRed Seal
426AConstruction Millwright certification requirementsVoluntaryExamRatio
453ADrywall Finisher and Plasterer certification requirementsVoluntaryExamRatioRed Seal
451ADrywall, Acoustic and Lathing Applicator certification requirementsVoluntaryExamRatioRed Seal
309AElectrician - Construction and Maintenance certification requirementsCompulsoryExamRatioRed Seal
309CElectrician - Domestic and Rural certification requirementsCompulsoryExamRatio
455AExterior Insulated Finish Systems Mechanic certification requirementsVoluntary
448AFloor Covering Installer certification requirementsVoluntaryExamRatioRed Seal
403AGeneral Carpenter certification requirementsVoluntaryExamRatioRed Seal
253HHazardous Materials Worker certification requirementsVoluntaryExam
253AHeat and Frost Insulator certification requirementsVoluntaryExamRatio
636CHeavy Equipment Operator - Dozer certification requirementsVoluntaryExam
636BHeavy Equipment Operator - Excavator certification requirementsVoluntaryExam
636AHeavy Equipment Operator - Tractor Loader Backhoe certification requirementsVoluntaryExam
339AHoisting Engineer - Mobile Crane Operator 1 certification requirementsCompulsoryExamRatioRed Seal
339CHoisting Engineer - Mobile Crane Operator 2 certification requirementsCompulsoryExamRatio
339BHoisting Engineer - Tower Crane Operator certification requirementsCompulsoryExamRatioRed Seal
420BIronworker - Generalist certification requirementsVoluntaryExamRatioRed Seal
420AIronworker - Structural and Ornamental certification requirementsVoluntaryExamRatioRed Seal
296ANative Residential Construction Worker certification requirementsVoluntary
404CPainter and Decorator - Commercial and Residential certification requirementsVoluntaryExamRatioRed Seal
404DPainter and Decorator - Industrial certification requirementsVoluntaryExamRatio
306APlumber certification requirementsCompulsoryExamRatioRed Seal
434APowerline Technician certification requirementsVoluntaryExamRatioRed Seal
244KPrecast Concrete Erector certification requirementsVoluntaryRatio
244LPrecast Concrete Finisher certification requirementsVoluntaryRatio
313ARefrigeration and Air Conditioning Systems Mechanic certification requirementsCompulsoryExamRatioRed Seal
452AReinforcing Rodworker certification requirementsVoluntaryExamRatioRed Seal
308RResidential (Low Rise) Sheet Metal Installer certification requirementsCompulsoryExamRatio
313DResidential Air Conditioning Systems Mechanic certification requirementsCompulsoryExamRatio
244HRestoration Mason certification requirementsVoluntaryRatio
449ARoofer certification requirementsVoluntaryExamRatioRed Seal
308ASheet Metal Worker certification requirementsCompulsoryExamRatioRed Seal
427ASprinkler and Fire Protection Installer certification requirementsCompulsoryExamRatioRed Seal
307ASteamfitter certification requirementsCompulsoryExamRatioRed Seal
241ATerrazzo, Tile and Marble Setter certification requirementsVoluntaryExamRatioRed Seal

Industrial sector trades (40)

CodeTradeStatus
615ABearings Mechanic certification requirementsVoluntary
600PBlacksmith certification requirementsVoluntary
438ACabinet Maker certification requirementsVoluntaryExamRed Seal
670CComputer Numerical Control (CNC) Programmer certification requirementsVoluntary
670DDie Designer certification requirementsVoluntary
446AElectric Motor System Technician certification requirementsVoluntaryExamRed Seal
289FElectrician (Signal Maintenance) certification requirementsVoluntary
636EElevating Devices Mechanic certification requirementsVoluntary
269EEntertainment Industry Power Technician certification requirementsVoluntaryExam
255WFacilities Mechanic certification requirementsVoluntaryExam
255BFacilities Technician certification requirementsVoluntaryExam
429AGeneral Machinist certification requirementsVoluntaryExamRed Seal
277ZHydraulic/pneumatic Mechanic certification requirementsVoluntary
442AIndustrial Electrician certification requirementsVoluntaryExamRed Seal
433AIndustrial Mechanic Millwright certification requirementsVoluntaryExamRed Seal
447AInstrumentation and Control Technician certification requirementsVoluntaryExamRed Seal
259LLocksmith certification requirementsVoluntary
430MMachine Tool Builder and Integrator certification requirementsVoluntaryExam
437AMetal Fabricator (Fitter) certification requirementsVoluntaryExamRed Seal
431AMould Maker certification requirementsVoluntaryExam
225AOptics Technician (Lens and Prism Maker) certification requirementsVoluntary
609CPackaging Machine Mechanic certification requirementsVoluntary
443APattern Maker certification requirementsVoluntaryExam
456PPressure Systems Welder certification requirementsVoluntaryExam
246TProcess Operator - Food Manufacturing certification requirementsVoluntary
246RProcess Operator - Power certification requirementsVoluntary
246FProcess Operator - Refinery, Chemical and Liquid Processes certification requirementsVoluntary
268RRailway Car Technician certification requirementsVoluntaryExam
288RRelay and Instrumentation Technician certification requirementsVoluntary
611BSaw Filer/fitter certification requirementsVoluntary
278BSurface Blaster certification requirementsVoluntaryExam
630BSurface Mount Assembler certification requirementsVoluntary
225FThin Film Technician certification requirementsVoluntary
602CTool and Cutter Grinder certification requirementsVoluntary
430ATool and Die Maker certification requirementsVoluntaryExamRed Seal
239bTool and Gauge Inspector certification requirementsVoluntary
630TTool/tooling Maker certification requirementsVoluntaryExam
638ATractor-Trailer Commercial Driver certification requirementsVoluntary
605BWater Well Driller certification requirementsVoluntary
456AWelder certification requirementsVoluntaryExamRed Seal

Looking for the compulsory trades?

23 of Ontario's 144 prescribed trades are compulsory, meaning certification is required by law to work in them. The full list, including trades outside the construction and industrial sectors, is on the compulsory trades in Ontario page.