ontario regulation 113/26

made under the

Occupational Health and Safety Act

Made: April 16, 2026
Filed: April 20, 2026
Published on e-Laws: April 20, 2026
Published in The Ontario Gazette: May 9, 2026

Amending Reg. 833 of R.R.O. 1990

(CONTROL OF EXPOSURE TO BIOLOGICAL OR CHEMICAL AGENTS)

1. Section 1 of Regulation 833 of the Revised Regulations of Ontario, 1990 is amended by adding the following definition:

“CSA” means the CSA Group; (“CSA”)

2. (1) Paragraph 1 of subsection 10 (1) of the Regulation is revoked and the following substituted:

1.  It must be,

i.  approved by NIOSH,

ii.  approved by CSA, or

iii.  approved by a testing and certification agency other than NIOSH or CSA and, in the opinion of a person qualified because of knowledge, training and experience in industrial hygiene practice, afford the worker using it protection at least equal to the protection afforded by the use of a respirator approved by NIOSH or CSA.

(2) Clause (b) of subsection 10 (3) of the Regulation is amended by striking out “N-100, R-100 or P-100” and substituting “N100, CA-N100, R100, CA-R100, P100 or CA-P100”.

Commencement

3. This Regulation comes into force on the later of July 1, 2026 and the day this Regulation is filed.