In general, you usually need a high school diploma. To gain certification, you usually need to complete an apprenticeship or have a combination of experience and trade courses. Trade certification is available in most provinces / territories. Qualified tradespersons may also obtain interprovincial (Red Seal) trade certification, which provides job mobility throughout the country. Many recent entrants have a trade / vocational certificate.

High School Diploma
Certificate

Construction / manufacturing
Diagrams / drawings
Physical work

Industrial Arts (Metalworking)
Math
Drafting
Physics
Computer-related courses