The Workplace Safety and Insurance Board of Ontario (WSIB) helps workers who get hurt or sick because of work. They also teach about workplace safety.
The Workers Health and Safety Centre (WHSC) teaches workers and bosses how to stay safe at work. They offer training and advice.
The Industrial Accident Prevention Association (IAPA) used to teach about safety at work. It's now part of the Workplace Safety and Prevention Services (WSPS). They help with safety training and support in Ontario.