This minor group comprises contractors and supervisors, technical industrial, electrical and construction trades and related workers, including contractors and supervisors, machining, metal forming, shaping and erecting trades and related occupations; contractors and supervisors, electrical trades and telecommunications occupations; contractors and supervisors, pipefitting trades; contractors and supervisors, carpentry trades; and contractors and supervisors, other construction trades, installers, repairers and servicers. Contractors own and operate their own businesses and supervisors supervise and coordinate the activities of workers. They are employed by construction companies; electrical, mechanical, carpentry, bricklaying, masonry, cement and concrete, plastering, drywalling and lathing, roofing, insulation, painting, floor covering, construction glass installation, and plumbing and pipefitting trade contractors; maintenance departments of industrial, commercial and manufacturing establishments; machine shops; structural, platework and related metal products fabrication, manufacturing and erecting companies; electric power generation, transmission and distribution companies and public utility commissions; telephone, cable and satellite television and other telecommunications transmission companies; gas distribution companies; manufacturers of custom furniture and fixtures and of precast concrete products; service and repair shops; glass fabrication shops; and pest control companies; or they may be self-employed.

This minor group comprises contractors and supervisors, technical maintenance trades and heavy equipment and transport operators, including contractors and supervisors, mechanic trades; contractors and supervisors, heavy equipment operator crews; supervisors, printing and related occupations; supervisors, railway transport operations; supervisors, motor transport and other ground transit operators; and supervisors, mail and message distribution occupations. Contractors own and operate their own businesses and supervisors supervise and coordinate the activities of workers. They are employed by manufacturing, utilities and other industrial establishments; heavy equipment dealers, contractors and servicing companies ; construction, pipeline, logging, water drilling, cargo-handling companies; mining, quarrying and drilling and blasting companies; refrigeration, heating and air conditioning contractors and maintenance companies; elevator construction and maintenance companies; retail and warehouse establishments; marine, railway, motor transport and ground transit companies and urban transit systems; airlines and aircraft maintenance establishments; motor vehicle, and truck and trailer dealerships, maintenance establishments, body repair shops and appraisal centres; motorcycle, all-terrain vehicle, appliance, and other electrical equipment repair and service shops, dealerships and maintenance departments of related manufacturing and retail companies; commercial printing companies and establishments with in-house printing departments; Canada Post Corporation and courier companies; all levels of government; or they may be self-employed.