Substance use and work
With the legalization of recreational cannabis in Canada, questions have been raised about patterns of cannabis use at work, the use of cannabis to treat work-related injuries, and the implications of such uses for work productivity, workplace health and safety and work disability management. IWH research examines these questions, as well as questions about the use and effectiveness of narcotics or opioids to treat pain, including pain associated with work injuries, and patterns of opioid-related harms among workers.
Featured
![](https://iwh.on.ca/sites/iwh/files/iwh/featured-speakerseries.jpg)
IWH Speaker Series
Cannabis use and perceptions among Canadian workers after legalization
Published: May 14, 2024
At Work article
Exploring how workplace solutions can mitigate opioid harms among workers
With the recognition that workplaces can play a part in responding to North America’s opioid crisis, the OCRC and IWH brought together over 100 occupational health specialists, government representatives, union advocates, researchers, and others to discuss how to prevent opioid harms among workers.
Published: May 9, 2024
![Daily Commercial News logo](/sites/iwh/files/styles/bootstrap_4_col_widescreen/public/iwh/images/daily_commercial_news_logo.png?h=3b5d1417&itok=o22XiZaP)
IWH in the media
Addressing mental health, substance abuse at work requires new approaches: Experts
A panel of professionals offered tips for dealing with mental illness and substance use disorder in the workplace at the recent OGCA Leadership Conference. On the panel, Dr. Nancy Carnide, a scientist with the Institute for Work & Health who is conducting a survey on cannabis in the workplace, said that employers need to look at how the workplace may be contributing to substance use.
Published: Daily Commercial News, March 2020
IWH Speaker Series
IWH Speaker Series
Have cannabis use and perceptions about workplace use changed since legalization?
Are workers using and thinking differently about cannabis at work now that the non-medical use of cannabis is legal? A team at the Institute for Work & Health led by Associate Scientist Dr. Nancy Carnide is answering this question through annual surveys of Canadian workers, asking about their use and understanding of, as well as their perceptions about, cannabis at work. In this presentation, Dr. Carnide shares early results from her comparison of workers’ pre- and post-legalization responses to questions about cannabis at work.
Published: March 2020
![Daily Commercial News logo](/sites/iwh/files/styles/bootstrap_4_col_widescreen/public/iwh/images/daily_commercial_news_logo.png?h=3b5d1417&itok=o22XiZaP)
IWH in the media
IWH takes deep dive into the marijuana Pandora’s box
A team at the Toronto-based Institute of Work and Health (IWH) is doing a deep dive into the issue, though, that might yield valuable data for the industry. Findings from the work will help identify gaps in knowledge, problematic perceptions and risky use patterns, Grant Cameron reports.
Published: Daily Commercial News, January 2020
Journal article
Journal article
Despite fears, use of cannabis at work remained stable after legalization: study
Published: OOHNA Journal, January 2020
Infographic
Infographic
Cannabis use and the Canadian workplace (2019)
From 2018 to 2021, the Institute for Work & Health is conducting a yearly survey of Canadian workers about cannabis to understand how the legalization of non-medical cannabis in October 2018 is affecting workers’ cannabis use, and affecting the beliefs of both users and non-users about cannabis use at work. The first survey was conducted in June 2018, before the legalization of non-medical cannabis four months later. This infographic shares some of what was learned.
Published: October 2019
IWH Speaker Series
IWH Speaker Series
The link between workplace injury and fatality risks and the use of substances affecting the central nervous system
Prescription and recreational drugs that act on the central nervous system can have many adverse effects, including cognitive and psychomotor impairment. An IWH systematic review has looked into the link between workplace injury and fatality risks and the use of such substances—including opioids, benzodiazepines and cannabis. In this presentation, Dr. Nancy Carnide shares findings from that systematic review.
Published: May 2019
Project
Project
Toking 9 to 5: Workplace cannabis use and perceptions among Canadian workers
An IWH research team is following up pre-legalization survey of workers about their use and perceptions of marijuana at work with a post-legalization survey that will determine if use patterns and perceptions have changed.
Status: Ongoing
Project
Project
Cannabis and workplace fatalities: establishing a baseline in Ontario
Can we use coroner data to establish incidences when cannabis is involved in a workplace fatality? This study aims to find out.
Status: Ongoing
![CPA logo](/sites/iwh/files/styles/bootstrap_4_col_widescreen/public/iwh/images/cpa_logo.png?h=0d55e0aa&itok=rGOgbini)
IWH in the media
Canadians need to be educated on cannabis in the workplace, new study says
Research is limited on the impact marijuana use has on productivity and safety at work. Now, organizations need to revisit their employment policies. Sophie Nicholls Jones reports, with findings from IWH's study of at-work cannabis use and attitudes.
Published: CPA Canada, November 2018
IWH Speaker Series
IWH Speaker Series
Clearing the haze: Understanding how Canadian workers use and perceive cannabis at work
Recreational cannabis is now legal in Canada and many surveys suggest employers are concerned about the potential implications for workplaces. In this presentation, Dr. Nancy Carnide shares preliminary findings of a survey of workers, conducted in June 2018, aimed at understanding patterns of workplace cannabis use and the social norms and perceptions about such use.
Published: November 2018