When is respirator fit testing required in BC?
Under WorkSafeBC's Occupational Health and Safety Regulation, a worker must pass a fit test before being issued a tight-fitting respirator, using CSA Standard Z94.4 procedures. CSA Z94.4 calls for retesting at least every two years, and many employers retest annually. Workers should also be retested when they change respirator model or size, or have facial changes such as significant weight change or dental work.



