Plain-language summaries

This spring, attendees of IWH's second annual IWH Connects meeting had a chance to exchange ideas about research and resources for organizations in three key areas: building employer confidence in disability, equity, inclusion and accessibility practices; promoting health and safety in linguistically diverse workplaces; and addressing the psychosocial work environment.

Published: May 2025

In Canada and other high-income countries, rates of suicide, drug poisoning, and alcohol-attributable mortality—sometimes referred to as “deaths of despair”—have increased over time. An IWH study investigated whether job quality—measured in terms of employment stability, hours and wages—is linked to these causes of deaths.

Published: April 2025

Workers with a work-related physical injury that takes them off the job can have a wide range of mental health experiences, beyond diagnosable conditions. That’s according to an IWH study which also found that differences in workers’ mental health after an injury were linked to return-to-work outcomes. Those reporting both a mental health condition and the poorest wellbeing had longer, more expensive compensation claims.

Published: April 2025

Online formats for occupational health and safety (OHS) training have gained popularity in recent years, especially since the COVID-19 pandemic. But are they as effective as in-person training? An IWH study compared online and in-person OSH training programs to measure differences in knowledge retention and whether learners felt they would use the knowledge they gained.

Published: April 2025

Work-related post-traumatic stress injuries (PTSI) are complex and highly prevalent among public safety workers such as those in police and fire services. Faced with the challenges of supporting employees who have experienced such an injury, public safety employers have developed strategies to improve return to work (RTW) after PTSI. These strategies were highlighted in a recent IWH Speaker Series presentation.

Published: March 2025

Job disruptions are common among workers living with chronic physical and/or mental health conditions, an IWH study has found. The study investigated the effects of workplace supports had on four types of job disruptions.

Published: March 2025

An IWH study found that among a group of injured workers in Ontario, those who experienced severe pain were more likely to use opioids than those who had no or only mild pain—regardless of whether they felt they had to return to work too soon, or were offered work accommodations.

Published: February 2025

Workers in public safety jobs, like firefighters or police, are often exposed to potentially traumatic events and may experience mental health injuries as a result. In Ontario, a pilot program has been developed to help treat these workers. To identify any needed changes to the program, IWH researchers asked employers about their experiences helping these workers return to work after a mental health injury.

Published: January 2025

Workers with chronic or episodic health conditions may face the decision of whether to disclose their health information at work. But many find this decision challenging and stressful. A worker may need supports due to their condition but may worry that sharing health information could impact their reputation or job security. A new IWH tool, called DCIDE, was developed to help workers make these hard decisions.

Published: December 2024

Newcomer workers have a higher risk getting injured or ill at work than Canadian-born workers. In a step to address this longstanding issue, IWH recently hosted over 50 stakeholders to discuss the health and safety challenges these workers face. They also discussed how employers and others are addressing these challenges, and what research is needed to better support these workers.

Published: December 2024

On October 17, 2018, the non-medical use of cannabis was legalized in Canada. To examine the implications of this change for workplaces, the Institute for Work & Health (IWH) embarked on two research projects. The studies explored changes in cannabis consumption habits among workers; changes in their perceptions about such consumption; associations between cannabis consumption and occupational injury risks; as well as the use of cannabis to treat symptoms in the aftermath of a work-related injury/illness. This Issue Briefing provides an overview of findings from these two studies and the potential implications of this research for employers and policy-makers.

Published: December 2024

Machine learning is being adopted by more and more Canadian workplaces. Given this technology’s ability to learn, adapt and generate work outputs, it also has the potential to perform job tasks in place of humans. But which workers might be most affected by the use of machine learning? An IWH study explores this question.

Published: November 2024

Time and resource constraints may make it hard for small businesses to access health and safety support programs. But, as an IWH study finds, small businesses gain from even limited participation in such programs. The study, based on interviews with small businesses that took part in Ontario's Health and Safety Excellence Program, also highlights factors that contribute to their success in the program.

Published: November 2024

Walking, biking, or taking public transportation to work is one way workers can increase their physical activity. But does the choice to use active transportation differ for workers in different jobs, or between men and women? This study aimed to find out.

Published: October 2024

Formerly injured workers in certain occupations are at an elevated risk of experiencing opioid-related harms, according to a study by IWH and the Occupational Cancer Research Centre. Looking within a large sample of formerly injured Ontario workers, occupational groups with greater risks of harms included construction, forestry and logging, materials handling, and processing.

Published: October 2024

Young adults who live with both a rheumatic disease and depression have lower productivity than those who have only one or neither condition. That’s according to a new IWH study. Findings from this small study also suggest that having a supportive working environment can buffer the lost productivity issues.

Published: October 2024

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

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

Investigating how daily activity patterns affect workers’ cardiovascular health, helping new businesses to start managing occupational health and safety, and assessing B.C.’s psychosocial work environment to inform a mental health strategy. These are among the latest externally funded projects underway at the Institute.

Published: July 2024

Building on research linking overtime work to depression, anxiety, and other mental health concerns, an IWH study investigated how working unpaid overtime is associated with mental health in Canada’s working population. They found that that the more unpaid overtime hours worked, the more likely a worker is to report stress and burnout.

Published: June 2024