When is it required?
Before construction begins on any project that meets section 6 of the Regulation for Construction Projects (O. Reg. 213/91). Ontario's example: a notice of project is required if the total cost of labour and materials for the project is expected to exceed
$50,000, or $250,000 for a project confined to a car factory (Government of Ontario, File a work notice, read November 5, 2026). Section 6 has other conditions too, so the full list is worth reading for any project.
Who is the constructor?
The Occupational Health and Safety Act: a constructor means a person who undertakes a project for an owner and includes an owner who undertakes all or part of a project by himself or by more than one employer
(Occupational Health and Safety Act, s. 1 (1), read November 5, 2026). So a general contractor running the whole job is usually the constructor; an owner who hires several trades directly can become one.
Which notices and forms come with a project?
| Notice or form | When |
|---|---|
| Notice of Project | Before construction begins on a project over $50,000 in labour and materials, or meeting other s. 6 conditions |
| Form 1000 registration | Every constructor and employer, before beginning work; kept at the project, not sent in |
| Notice of trench work | A trench more than 1.2 m deep that a worker may enter |
| Notice of asbestos removal | Before a Type 3, and certain Type 2, asbestos removal operations |
| Suspended work platform | At least 48 hours before first use |
Each row is from Ontario's page (Government of Ontario, File a work notice, read November 5, 2026), which also says a signed copy of the Notice of Project must be posted in a conspicuous place at the project or be available at the project for review by an inspector.
Filing is online with an Ontario.ca login, or on paper to the regional office.
What else comes before the work starts?
On a renovation, the owner's list of designated substances such as asbestos (asbestos and designated substances). On a major commercial build, site plan approval and stamped drawings before the permit (site plan approval). The full order is on the commercial page, and JDT Construction Inc. plans a job in that order.