Occupational diseases are the leading cause of worker deaths. Every year, there are approximately four times
more deaths from occupational disease than traumatic fatalities. Occupational illnesses may result from acute
and long-term exposures to hazardous chemical agents in the workplace. Controlling these exposures will help
lower the risk of workers developing an occupational illness. The Ministry of Immigration, Training and Skills
Development (MLITSD) is conducting two Occupational Hygiene Campaigns (April 1, 2024 - March 31, 2025)
to raise awareness and boost compliance on the key occupational hygiene issues:
Worker exposures to chemical agents in the workplace
WHMIS training based on the amended Hazardous Products Regulations
To support MLITSD's campaigns, this document provides links to practical tools and resources, such as best
practice guides, checklists, and training options, to help businesses implement and maintain effective health
and safety practices.
Topics and Links to Resources
MLITSD's Occupational Hygiene Campaigns (2024-2025)
Worker exposures to chemical agents in the
workplace Campaign
MLITSD Hygienists will conduct workplace inspections,
to ensure compliance with R.R.O. 1990, Regulation 833,
Control of Exposure to Biological or Chemical Agents, in
all workplaces where this regulation applies. Inspectors
will ensure that workers are not exposed to hazardous
substances exceeding occupational exposure limits.
WHMIS training based on the amended Hazardous
Products Regulations Campaign
MLITSD hygienists will conduct workplace inspections,
to ensure compliance with R.R.O. 1990, Regulation 860,
Workplace Hazardous Materials Information System
(WHMIS), in all workplaces where this regulation
applies. Inspectors will:
i) ensure that workers have received WHMIS training;
ii) determine if retraining on WHMIS is required based
on whether hazardous products encountered in the
workplace have labels and safety data sheets that
are compliant with the amended Hazardous Products
Regulation (HPR).
Consulting
WSPS Occupational Hygiene Consulting
Training
Safety Connection - MLITSD Occupational Hygiene
Campaign: The Essentials
Safety Connection - MLITSD Occupational Hygiene
Campaigns 2024-2025: How to Prepare
Information Resources
Hazardous chemicals in your workplace? 5 Ways to
prepare for MLITSD inspections
MLITSD Occupational Hygiene Inspections -
Frequently Asked Questions
Preparing for a MLITSD Inspection
WHMIS Regulation 860 and Regulation 833
Compliance Checklist
Other Resources
MLITSD Occupational Hygiene Campaign information
R.R.O. 1990, Reg. 833: Control of Exposure to
Biological or Chemical Agents
Current Occupational exposure limits for Ontario
workplaces under Reg 833
R.R.O. 1990, Reg. 860: Workplace Hazardous
Materials Information System (WHMIS)
MLITSD Occupational Hygiene Campaigns Toolkit:
WHMIS and Exposure to Chemical Agents
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