The occupations concerned are defined on the basis of categories developed for Statistics Canada's Registered Apprenticeship Information System (RAIS), which are derived from a special grouping in Human Resources and Skills Development Canada's National Occupational Classification (NOC). In this article, occupations were grouped by the categories in the National Occupational Classification – Statistics (NOC-S). They are shown in Appendix Table 1.
An apprenticeship is an agreement between a person (an apprentice) who wants to learn a skill and an employer who needs a skilled worker. Apprenticeship training combines practical on-the-job training or work experience, which accounts for approximately 80% to 90% of the time spent in an apprenticeship program, with the formal in-school technical training accounting for the remaining 10% to 20%. The nominal duration of most apprenticeship programs varies between two and five years.