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
New business owners on why and how OHS starts to matter
Published: October 27, 2026
Research Highlights
Workers with COVID-19 had better return-to-work rates than others during the pandemic
During the pandemic, workers who contracted COVID-19 from work had better return-to-work rates 18 months later than those with other conditions. Most traditional return-to-work factors, however, did not explain the difference in rates.
Published: July 14, 2026
Project
Project
Programs of early OHS intervention with small businesses
What existing OHS interventions for small businesses can be feasibly implemented in small business start-ups? This project aims to find out.
Status: Ongoing
IWH Speaker Series
IWH Speaker Series
Preventing falls from heights in construction: a long-term evaluation of Ontario's working-at-heights training standard
In 2015, the province of Ontario implemented a working-at-heights (WAH) training standard requiring most construction workers to take a specific day-long training in fall prevention. A 2019 study conducted by the Institute for Work & Health found the training had positive impact on construction workers' safety knowledge, work practices and injury rates. In this presentation, Dr. Lynda Robson shares new findings on the longer-term impact of the training, drawing on two additional years of follow-up data.
Published: December 2022
At Work article
Employers struggle to provide newcomers with OHS training, support: IWH study
Employers are responsible for providing OHS training and support to keep workers safe. When it comes to workers who are new to Canada, workplaces face particular challenges following through on this responsibility.
Published: November 2022
Impact case study
Saskatchewan’s construction safety group uses IWH’s safety culture tool to measure OHS among member employers
When the Saskatchewan Construction Safety Association went looking for a tool to measure the OHS performance of its members firms, it turned to the Institute's easy-to-use, eight-item safety culture measure—the IWH-OPM.
Published: November 2022
Journal article
Journal article
Employers' experiences with safe work integration of recent immigrants and refugees
Published: Safety Science, July 2022
Project
Project
Artificial intelligence and occupational injury and illness in Ontario: implications for prevention and recovery
This study—one of the first of its kind to better understand the implications of AI for Ontario’s health and safety system—will build the evidence base on the scope and use of AI applications in OHS and RTW.
Status: Ongoing
Impact case study
IWH recommendations contribute to enhancement of the WSIB’s Health and Safety Index
When the WSIB decided to revisit the methods behind the Health and Safety Index, two IWH researchers provided advice on areas where the index could be improved. In October 2021, the HSI was revised, incorporating many of the suggestions provided by IWH.
Published: May 2022
Issue Briefing
Estimating the financial return on employers’ investments in the prevention of work injuries in Ontario
Following a 2017 study to estimate occupational health and safety (OHS) expenditures by employers with 20 or more employees in Ontario, Canada, an Institute for Work & Health (IWH) team has set out to estimate the financial return on those OHS expenditures. This Issue Briefing shares findings from that follow-up study.
Published: May 2022
At Work article
Over a third of work-related ER visits in Ontario don’t show up as WSIB claims
About 35 to 40 per cent of emergency department visits in Ontario for the treatment of work-related injuries and illnesses don't show up as workers' compensation claims—indicating a level of under-reporting that's consistent with previous estimates.
Published: March 2022
Impact case study
WSIB includes Institute safety culture tool in Health and Safety Excellence Program
Ontario's Workplace Safety and Insurance Board made a modified version of an Institute safety culture tool called the IWH-OPM available to firms as a voluntary component of participating in its Health and Safety Excellence Program.
Published: March 2022