Cannabis and work

With the legalization of recreational marijuana in Canada on the horizon, workplaces are concerned about its implications for workplace health, safety and productivity. IWH researchers are watching the research literature and conducting their own studies in order to help answer questions about marijuana use at work: its scope, its effects, and its relationship to work-related injuries and deaths.

Featured

Four jars of marijuana of different strains
At Work article

Many questions need examining to establish effects of legalized cannabis on work safety

Co-authors of pending systematic review on central nervous system agents outline what we know — and don’t — about OHS implications of legalized cannabis
Published: November 3, 2017
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

Workplace cannabis use and perceptions among Canadian workers after legalization

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
CPA logo
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
The Globe and Mail logo
IWH in the media

Canadian companies revisiting workplace policies with cannabis legalization just one week away

With recreational cannabis legalization a week away, organizations across the country are having to revisit workplace policies in an attempt to balance safety and employee choice in Canada’s newly permissive legal environment. Mark Rendell reports on a cannabis business event hosted by The Globe and Mail, with IWH's Dr. Nancy Carnide among the speakers.
Published: The Globe and Mail, October 2018
The Globe and Mail logo
IWH in the media

High at the helm: Workplaces preparing for cannabis legalization

Virtually nothing is known about why Canadians use cannabis on the job or how common it is for people to consume it at work, says the Institute for Work & Health's Dr. Nancy Carnide in this article on cannabis in the workplace.
Published: The Globe and Mail, April 2018
The Conversation logo
IWH in the media

Marijuana in the workplace: What is unsafe?

The federal government’s commitment to legalize recreational marijuana by July 1, 2018 raises occupational health and safety concerns for many employers. At the Institute for Work & Health (IWH), we have been reviewing the effects of various drugs that act on the central nervous system — including marijuana — on workplace injuries, deaths and near-misses, write IWH's Dr. Andrea Furlan and Dr. Nancy Carnide. What is striking is how little high-quality evidence there is on the impacts of marijuana in the workplace and how inconsistent the existing data is.
Published: The Conversation, January 2018
Project
Project

Workplace cannabis use and perceptions among Canadian workers before legalization

Before the legalization of recreational cannabis in Canada in October 2018, an IWH-led research team is surveying workers to learn how they use cannabis before and at work, and what they think about cannabis use relative to work.
Status: Ongoing
National Post logo
IWH in the media

Companies fret about hazy rules around pot use

Once recreational cannabis use becomes legal, taking a “smoke break” at work could suddenly become much more complicated, writes Cassandra Szklarski of the Canadian Press. The Institute for Work & Health's Dr. Andrea Furlan and Dr. Nancy Carnide are among those interviewed.
Published: National Post, December 2017
Four jars of marijuana of different strains
At Work article

Many questions need examining to establish effects of legalized cannabis on work safety

Workplaces have many questions about what the legalization of recreational marijuana may mean for safety on the job. In a Q&A, two co-authors of a pending systematic review outline what we know—and don't—based on the research to date.
Published: November 2017