2022 Manitoba Workplace Safety and Health Act and Regulation

Information confidential
35.21
A safety and health officer or other official working under the
authority of the Hazardous Products Act (Canada) who obtains
information under clause 46(2)(e) of the Hazardous Materials 
Information Review Act (Canada) must keep the information
confidential and must not disclose it to any person except
(a) in accordance with this Part;
(b) for the purposes of the administration or enforcement of the
Act or the Hazardous Products Act (Canada); or
(c) as otherwise required by law.
35.21(2) A person who receives information as permitted under subsection
(1) must not use or disclose it except in accordance with this Part, for
the purposes of administering or enforcing the Act or the Hazardous 
Products Act (Canada) or as otherwise required by law.
Information to medical professional
35.22(1) An employer must give any information in the employer’s possession,
including confidential business information exempted from
disclosure, to a medical professional for the purpose of making a
medical diagnosis or treating a worker in an emergency.
35.22(2) A person to whom confidential business information is given under
subsection (1) must not give the information to another person

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Workplace Safety And Health Regulation
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except for the purpose of treating a worker in an emergency or as
otherwise required by law.
Disclosure for workplace purposes
35.23
An employer who manufactures a hazardous product must, on
request and as soon as practicable, give the source of toxicological
data used in preparing a safety data sheet for the hazardous product
on request to any of the following:
(a) a safety and health officer;
(b) the committee at the workplace;
(c) the representative at the workplace;
(d) when there is no committee or representative, the workers at
the workplace.