Asbestos rules to accept CSA-certified respirators alongside NIOSH-approved ones starting mid-2026

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Amendments scheduled to take effect add the CSA Group (CSA) as an accepted respirator certification body alongside the existing NIOSH standard for asbestos work on construction projects and in buildings. Workers and employers will be able to use respirators approved by either NIOSH or CSA when asbestos exposure controls require respiratory protection. The respirator filter designations in Table 2 are also being updated to reflect current NIOSH and new CSA filter coding conventions (e.g., N100, CA-N100, R100, CA-R100, P100, CA-P100 replacing the older hyphenated codes). Employers and safety managers should review their respirator procurement and worker training to ensure equipment meets either the NIOSH or CSA approval standards once the changes are in force.

Who this affects
construction employers · building owners and operators · workers handling or exposed to asbestos · occupational health and safety managers · asbestos abatement contractors