What the laws say in Quebec
In Quebec, the employer’s general obligation is set out in section 51 of the Act respecting occupational health and safety. Among other things, the employer must provide the required personal protective equipment free of charge and ensure that the worker uses it: see LégisQuébec – AOHS, S-2.1.
This obligation is clarified in the Regulation respecting occupational health and safety. Section 343 makes it mandatory to wear eye or face protection that complies with CSA Z94.3 for any worker exposed to hazards that may cause injury to the eyes or face (particles, dangerous substances, molten metals, intense radiation). Reference: LégisQuébec – ROHS, S-2.1, r. 13 (s. 343).
The CNESST reminds employers that they have clear responsibilities in prevention. They must first identify, analyze, and prioritize the risks present in the workplace (CNESST, Identify risks in the workplace). They are also required to provide workers with the necessary personal protective equipment (PPE) free of charge, ensure it is used properly, and maintain it (CNESST, Personal protective equipment). In addition to these measures, the employer must adequately inform and train workers on the risks they are exposed to and the means of preventing them (CNESST, Employers’ obligations and right). All of these obligations fit within a structured prevention program aimed at protecting occupational health and safety (CNESST, Prevention program).
For federally regulated workplaces, the Canada Labour Code also requires the provision and maintenance of necessary PPE: Fact sheet.
What should you take away about prescription safety glasses?
- If your risk analysis concludes that eye protection is required, the employer must provide it free of charge and require that it be worn.
- CSA Z94.3 requires impact resistance and protective coverage that ordinary prescription glasses do not provide.
- When the worker wears vision correction, the protective solution must be compatible with their vision: compliant protection worn over prescription eyewear, provided it is truly usable without compromising safety or visual quality.
CSA Z94.3 and its practical implications
In Canada, CSA Z94.3 sets out the performance, testing, and labeling requirements for eye and face protectors. It covers both sans prescription et avec prescription. It addresses impact resistance, side protection, optical quality, material durability, and clear identification of compliance. In practice, if your safety glasses do not meet this standard, they are not acceptable for workplace use. To learn more: CSA Group – standards and certification.
Consequences for organizations:
- Safety glasses for prescription eyewear must be made with certified frames and impact-resistant lenses according to the established criteria.
- Side shields must provide adequate coverage. Regular prescription glasses with small clip-on side shields are not acceptable if they do not meet CSA Z94.3.
- Selection, fitting, maintenance, and periodic replacement are all part of a compliant program. Plan for regular checks of fit and equipment condition.