A Canadian Workplace Safety Assessment is a systematic process for identifying workplace hazards, evaluating the risks they pose to workers, assessing the adequacy of existing control measures, and recommending additional actions to reduce risks to acceptable levels. The assessment documents the hazards, the persons at risk, the existing and recommended controls, and the overall risk rating for each identified hazard.

In Canada, workplace safety is regulated at both the federal and provincial or territorial levels. Federally regulated workplaces (including interprovincial transportation, telecommunications, banking, and federal government operations) are governed by Part II of the Canada Labour Code (R.S.C. 1985, c. L-2) and the Canada Occupational Health and Safety Regulations (SOR/86-304). Section 124 of the Canada Labour Code requires every employer to ensure the health and safety at work of every person employed by the employer. Section 125(1)(z.03) requires employers to develop and implement a hazard prevention program.

Provincially regulated workplaces are governed by their respective provincial or territorial OH&S legislation. Ontario's Occupational Health and Safety Act (R.S.O. 1990, c. O.1), Alberta's Occupational Health and Safety Act (S.A. 2020, c. O-2.2), British Columbia's Workers Compensation Act (R.S.B.C. 2019, c. 1), and Quebec's Act Respecting Occupational Health and Safety (CQLR, c. S-2.1) each establish comprehensive frameworks for workplace hazard identification and risk assessment.

The Canadian Centre for Occupational Health and Safety (CCOHS), established under the Canadian Centre for Occupational Health and Safety Act (R.S.C. 1985, c. C-13), provides guidance on hazard identification and risk assessment as core elements of effective workplace safety programs. CSA Z1002 (Occupational Health and Safety — Hazard Identification and Elimination and Risk Assessment and Control) provides a standardized framework for conducting workplace safety assessments. The Workplace Hazardous Materials Information System (WHMIS 2015), implemented through the Hazardous Products Act (R.S.C. 1985, c. H-3) and the Hazardous Products Regulations (SOR/2015-17), requires specific hazard assessment and communication measures for workplaces using hazardous products.

A Workplace Safety Assessment is needed by every employer in Canada. Under the Canada Labour Code Part II, all federally regulated employers have a legal obligation to ensure the health and safety of their workers, and section 125(1)(z.03) specifically requires the development and implementation of hazard prevention programs that include hazard identification and risk assessment. Provincial OH&S legislation imposes similar requirements on provincially regulated employers.

Specific Canadian standards and regulations require hazard assessments for certain activities. CSA Z432 (Safeguarding of Machinery) requires risk assessments for machinery hazards. CSA Z460 (Control of Hazardous Energy — Lockout and Other Methods) requires hazard assessments for lockout/tagout procedures. WHMIS 2015 requires hazard assessments for all workplaces using hazardous products.

A workplace safety assessment should be conducted before operations begin at a new facility, whenever new equipment, materials, or processes are introduced, following any workplace accident or near-miss incident, when workers report new hazards, after any OH&S inspection or compliance order, and at least annually for ongoing operations.

OH&S inspections by federal or provincial regulators typically examine whether the employer has conducted adequate hazard assessments and implemented appropriate controls. Having documented assessments demonstrates due diligence and can serve as evidence of good faith compliance efforts. Under the Criminal Code of Canada (sections 217.1 and 22.1), organizations and individuals can face criminal charges for workplace safety failures, making documented hazard assessments essential for demonstrating reasonable care.

The assessment is particularly important for high-hazard industries such as mining, construction, manufacturing, oil and gas, healthcare, and forestry, where the risk of serious injury or death is elevated. Joint health and safety committees, required under both the Canada Labour Code (section 135) and provincial legislation, play a key role in the hazard assessment process.

A comprehensive Canadian Workplace Safety Assessment must address several essential elements to comply with the Canada Labour Code Part II, provincial OH&S legislation, and CCOHS guidelines.

The business and assessment details section should identify the employer, the workplace location, the province or territory, the specific area or activity being assessed, the assessor's name and qualifications, and the date of the assessment.

Hazard identification is the core of the assessment. Each identified hazard should be described in detail, including the source of harm, the circumstances under which harm could occur, and the specific regulation or standard that applies. Common hazard categories in Canadian workplaces include machine safeguarding (CSA Z432), hazardous energy control (CSA Z460), fall protection (provincial OH&S regulations), WHMIS 2015 requirements for hazardous products, confined space entry, and ergonomic hazards.

For each hazard, the assessment must identify who is at risk, including employees, contractors, visitors, and members of the public. Groups at particular risk, such as new workers, young workers, pregnant workers, and workers with disabilities, should be specifically identified as required by both the Canada Labour Code and provincial OH&S legislation.

Existing control measures should be documented and evaluated against the hierarchy of controls as described by CCOHS and CSA Z1002: elimination, substitution, engineering controls, administrative controls, and personal protective equipment. The risk level should be assessed with existing controls in place.

Additional actions required to further reduce risks should be identified, with specific assignments of responsibility and target completion dates. The review schedule should specify triggers for reassessment and the next scheduled review date, with annual review recommended as a minimum.