Illness/injury prevention
IWH has a long history of conducting research to provide practical guidance to employers, workers, OHS professionals and regulators about what works and what doesn’t in injury or illness prevention. This research targets the injury and illness prevention practices of workplaces, as well as the programs developed by governments, health and safety associations and others to support and motivate workplaces to adopt effective practices.
Featured

IWH Speaker Series
How businesses get their start in workplace health and safety: implications for research and policy
Published: April 21, 2026
At Work article
Differences in firm-level AI use for health and safety
To what extent are Canadian workplaces using artificial intelligence (AI) to help support workers’ health and safety? And what do these workplaces have in common? An IWH study surveyed firms across Ontario and British Columbia to find out.
Published: October 8, 2025
Journal article
Journal article
Risk of opioid-related harms by occupation within a large cohort of formerly injured workers in Ontario, Canada: findings from the Occupational Disease Surveillance System
Published: Occupational and Environmental Medicine, October 2024
IWH in the media
Cobbling together multiple jobs to make a living...What's the real cost on you?
Filling your spare time with side hustles can put more money in your pocket, but what will it cost you? In an episode of Ontario Today, host Amanda Pfeffer and guest Deena Ladd take calls from listeners. They also mention an IWH study on the link between injury risks and precarious work, conducted by Dr. Faraz Vahid Shahidi (at 24m 24s).
Published: CBC Radio One, September 2024
IWH in the media
The link between unpaid overtime, stress, and burnout
Working unpaid overtime is linked to high stress and burnout, according to recent research by the Institute for Work and Health. Previous research has connected working overtime with psychological distress. But the Institute for Work and Health study is the first of its kind in Canada to distinguish between paid and unpaid overtime.
Published: Canadian Centre for Occupational Health and Safety, September 2024
Project report
Project report
Participation in the Health and Safety Excellence Small Business Program: Understanding small business motivations and needs
The Workplace Safety & Insurance Board (WSIB) of Ontario launched the Health and Safety Excellence Program (HSEp) in 2019 to help Ontario employers improve their management of workplace health and safety. In 2021, to increase the participation of small businesses, the WSIB and the Ministry of Labour, Immigration, Training and Skills Development adjusted several program features and launched the HSEp Small Business Program. This report summarizes the results from a study aimed at understanding the needs, motivations, and experiences of the selected cohort of small businesses in the program and identifying effective approaches to improve the delivery of occupational health and safety (OHS) services to small businesses.
Published: September 2024
At Work article
Higher risk of work injuries found among those in precarious jobs: IWH study
Workers in jobs where precarious employment conditions are more common are more likely to experience a work-related injury or illness in Ontario, including COVID-19. That’s according to a pair of studies authored by Institute for Work & Health (IWH) researchers that examined whether employment conditions—for example, temporary contracts, involuntary part-time hours, irregular schedules and low wages—may be linked to the rate of work injuries.
Published: September 2024
IWH in the media
Survey tool effective in predicting injuries and improving safety
A safety culture survey tool is making significant strides in improving workplace safety across the Saskatchewan construction industry. Developed by the Saskatchewan Construction Safety Association (SCSA) in collaboration with EHS Analytics, this survey tool is proving to be an invaluable asset in predicting workplace injuries and enhancing Occupational Health and Safety (OHS) performance, writes Shane Mercer, describing the use of IWH's Organizational Performance Metric (IWH-OPM).
Published: Canadian Occupational Safety, August 2024
Journal article
Journal article
Is precarious employment an occupational hazard? Evidence from Ontario, Canada
Published: Occupational and Environmental Medicine, August 2024
At Work article
Rates of work injuries have declined in Ontario, except the most severe
Past research in occupational health and safety, including studies conducted at IWH, has shown a general decline in rates of work-related injuries in Ontario over the past two decades. But a new IWH study, based on emergency department records from 2004 to 2017, shows that when it comes to very severe injuries, no such decline was seen among men. It also finds an increase of 18 per cent among women.
Published: July 2024
Project
Project
Implementation of a comprehensive accommodation and reintegration program in a police service
This study sets out to evaluate the implementation of an accommodation and reintegration program at a major urban police service. The goal is to improve program access and participation and, ultimately, the well-being of police officers.
Status: Ongoing
Project
Project
Understanding how new businesses start managing OHS: laying the groundwork for future interventions
About 100,000 new businesses with one or more employees are created each year in Canada. Almost all start out as small businesses, which have been shown to carry high risks of injuries and fatalities. This study sets out to understand how occupational health and safety management is initiated by new businesses. Its aim is to fill in a research gap and help the prevention system in Ontario reach and support new businesses early in their lifecycle.
Status: Ongoing