Do post-construction cleaning workers need fall protection training under Ontario law?

Fall protection requirements for post-construction cleaning workers in Ontario are governed by the Occupational Health and Safety Act (OHSA) and its associated regulations — specifically Ontario Regulation 213/91 (Construction Projects) and Ontario Regulation 851 (Industrial Establishments). The short answer is yes, fall protection training is legally required in many post-construction cleaning scenarios, and homeowners hiring cleaning contractors should understand what this means for their project.

When Fall Protection Applies to Post-Construction Cleaning

Post-construction cleaning frequently involves working at heights. Cleaning high windows, washing ceilings, wiping light fixtures on vaulted ceilings, cleaning skylights, and accessing exterior surfaces all put workers above ground level. Under Ontario Regulation 213/91, any worker on a construction project who works at a height of three metres or more must have formal fall protection training and use appropriate fall arrest or fall restraint systems. If the cleaning is taking place while a construction project is still active — which is common during rough cleaning phases — the construction regulation applies directly.

When cleaning occurs after a project is fully complete and the site is no longer classified as an active construction project, Ontario Regulation 851 for industrial establishments may apply instead, along with the general duty provisions of OHSA. The threshold and requirements differ slightly, but the fundamental obligation remains: employers must protect workers from fall hazards, provide appropriate equipment such as harnesses and anchor points, and ensure workers are trained to use that equipment correctly.

Ontario's Working at Heights training standard, administered through the Infrastructure Health and Safety Association (IHSA), is the benchmark for construction-phase work. This certification is specific to Ontario, requires in-person practical components, and must be renewed every three years. A cleaning crew performing rough cleaning on an active construction site should have current Working at Heights certification. This is not optional — Ministry of Labour inspectors do visit construction sites and can issue stop-work orders and significant fines for non-compliance.

From a practical homeowner perspective, this matters because you can be held liable if an uninsured or improperly trained worker is injured on your property. Before hiring any post-construction cleaning contractor, confirm that they carry WSIB coverage and a minimum of two million dollars in general liability insurance. Ask specifically whether their workers have Working at Heights training if your project involves any elevated cleaning — high ceilings, exterior upper-storey work, skylights, or multi-storey stairwells. A reputable contractor will have no hesitation providing proof of these credentials.

In Ottawa specifically, many post-construction cleaning jobs involve century homes and older properties in neighbourhoods like Sandy Hill, Centretown, and Glebe, where high ceilings, ornate light fixtures at elevation, and multi-storey layouts are common. These properties create real fall hazards that require proper equipment and training to address safely. Ottawa's winter conditions add an additional layer of risk for any exterior elevated cleaning — ice, frost, and cold-stiffened equipment make fall hazards significantly more dangerous from November through March.

The bottom line is that fall protection compliance is the contractor's legal responsibility, not yours — but confirming that your contractor meets these standards protects both their workers and your financial exposure as a property owner. If you are looking for cleaning contractors who understand their legal obligations under Ontario law, the Ottawa Construction Network directory at justynrookcontracting.com is a free resource where you can browse and contact local cleaning professionals directly.