Status
Compulsory under Schedule 1
Back to top
Scope
Business activities include millwrighting and rigging, i.e., the erection, hoisting, installation, removal, or re-installation of large-scale stationary machinery and apparatus.
Any on-site erection, hoisting, installation, removal, dismantling or re-installation activity involved in the repair of large-scale, stationary machinery is also included here. However, the repair (both on-site and in-shop) of dismantled parts of these objects is classified in the relevant repair CU for that machinery. The removal or dismantling of large-scale machinery when carried out in conjunction with, or as part of the same contract as, structural demolition must be classified in G-748-01, Wrecking and Structural Demolition.
Items that may require millwright and rigging work include
- commercial cooling equipment
-
chimneys, prefabricated
-
gas bar canopies with metal framework
-
heat exchangers, industrial
-
high metal stacks
-
hydro-electric station components
-
industrial plant machinery and components
-
industrial process and materials handling equipment
-
nuclear steam generators
-
power boilers
-
refrigerant plants
-
sewage treatment plants
-
standpipes
-
steel storage tanks including those for natural gas, oil, or water (excluding underground motor vehicle fuel storage tanks)
-
windmills.
This category includes the inspection of industrial chimneys, regardless of material.
Excluded is the dismantling of any of the above when
- the dismantling (e.g. of wood or metal) is carried out in conjunction with, or as part of the same contract as, masonry dismantling; and
-
segregated payrolls are not maintained for the masonry dismantling and the millwright/rigging dismantling.
Also included is the supply of millwright and rigging labour to any industry.
Back to top
Note
Special Operation activities are defined in the O. Reg. 175/98 and are classified as a business activity in its own right. A construction contract may require an employer to conduct Special Operation activities in conjunction with the contracted activity. Where the Special Operation activity accounts for
- less than 10 % of the total direct insurable earnings for the entire contract
and
- is considered by the WSIB to be integral to the main activity of the contract it is not classified separately but instead is classified as part of the contract.
All business activities carried out underground for the mining industry are considered mining activities and must be classified in the appropriate Class B - Mining CU.
In the supply of labour industry, the agency supplying and paying the worker, not the employer to whom the worker is supplied, is responsible for covering the agency’s workers under the Workplace Safety and Insurance Act.
These workers perform a variety of functions that are normally- part of the day-to-day operations, and
-
usually carried out by permanent staff of the employer to whom they are supplied.
All workers supplied are compulsorily covered under Schedule 1 even if - the work activity they carry out, or
-
the business activity of the employer to whom they are supplied is not covered according to the “Status” line of the relevant CU in the ECM.
For information on classifying construction work by contract, see the section titled "Classification of Construction Activities" in The Classification Scheme, document 14-01-01, located in the Operational Policy Manual and in the Reference section of this Manual.
Back to top
Cross reference
B-110-02, Gold Mines, Contracting.
B-113-02, Nickel Mines, Contracting.
B-119-16, Other Mines, Contracting.
D-370-01, Metal Tank Operations.
D-375-05, Other Fabricated Structural Metal Products.
D-402-02, Turbine and Mechanical Power Transmission Equipment.
D-402-03, Electrical Transformer Operations.
D-403-01, Sawmill and Woodworking Machinery.
D-403-03, Other Machinery and Equipment Operations.
D-408-02, Power Boiler and Heat Exchanger Operations.
D-411-01, Construction and Mining Machinery Operations.
F-670-01, Industrial Machinery and Supplies, Sales.
F-670-02, Service Machinery and Supplies, Sales.
F-670-09, Construction and Forestry Machinery and Supplies, Sales.
F-670-10, Mining Machinery and Supplies, Sales.
G-704-02, Testing, Inspection, and Related Services.
G-707-02, Plumbing, Heating, and Air Conditioning, Installation.
G-707-05, Industrial Maintenance and Repair Contracting.
G-723-06, Supply of Labour, Construction.
G-741-01, Masonry Work.
G-748-01, Wrecking and Structural Demolition.
G-748-03, Structural Steel Erection.
G-751-01, Siding Work.
I-929-01, Supply of Non-clerical Labour Operations.
Back to top |