Dr. Nancy Carnide
Dr. Nancy Carnide is an associate scientist at the Institute for Work & Health. She is also an assistant professor in the Division of Epidemiology at the University of Toronto's Dalla Lana School of Public Health.
She has a PhD in epidemiology from the Dalla Lana School of Public Health at the University of Toronto. During her PhD, she was the recipient of a Canadian Institutes of Health Research (CIHR) Vanier Canada Graduate Scholarship and a CIHR Strategic Training Fellowship in Work Disability Prevention. Carnide was previously a post-doctoral fellow at the Institute.
Carnide conducts research at the intersection between occupational health and safety and substance use. Her research projects have involved analysis of survey and administrative data, as well as systematic reviews. Her program of research includes examining the use and non-medical use of prescription and recreational drugs among workers, their risk factors and the workplace consequences of their use, with a focus on cannabis and opioids.

“The gaps in knowledge around the scope, determinants and effects of substance use among workers are vast. Given the current opioid crisis and the move towards cannabis legalization in multiple jurisdictions, including Canada, I cannot think of a more timely area for research in occupational health and safety.” – Dr. Nancy Carnide
Research areas
Projects
- Cannabis and workplace fatalities: establishing a baseline in Ontario. Funded by Canadian Institutes of Health Research. Ongoing. (PI on the project)
- Correcting for participation bias in non-probability samples using multiple reference samples. Funded by Canadian Institutes of Health Research (CIHR). Ongoing.
- ECHO OEM: Piloting a telementoring program in occupational and environmental medicine. Funded by Workplace Safety and Insurance Board. Ongoing.
- Ontario Life After Work Injury Study: Cannabis use and long-term recovery and return-to-work outcomes among Ontario injured workers. Funded by Canadian Institutes of Health Research. Ongoing. (PI on the project)
- Ontario Life After Work Injury Study: Understanding the long-term recovery and labour market outcomes of injured workers in Ontario. Funded by Workplace Safety and Insurance Board of Ontario. Ongoing.
Publications
- Dobson KG , Mustard C, Carnide N, Furlan AD, Smith PM. Association of persistent pain with the incidence of chronic conditions following a disabling work-related injury. Scandinavian Journal of Work, Environment & Health. 2023 epub ahead of print. doi:10.5271/sjweh.4096.
- Dobson KG , Mustard C, Carnide N, Furlan AD, Smith PM. Impact of persistent pain symptoms on work absence, health status and employment 18 months following disabling work-related injury or illness. Occupational and Environmental Medicine. 2022;79(10):697-705. doi:10.1136/oemed-2022-108383.
- Carnide N, Lee H, Landsman V, Frone MR, Furlan AD, Smith PM. Cannabis use and workplace cannabis availability, perceptions and policies among Canadian workers: a comparison before and after the legalisation of non-medical cannabis. Occupational and Environmental Medicine. 2022 epub ahead of print. doi:10.1136/oemed-2022-108316.
- Mustard C, Nadalin V, Carnide N, Tompa E, Smith PM. Cohort profile: the Ontario Life After Workplace Injury Study (OLAWIS). BMJ Open. 2021;11(9):e048143. doi:10.1136/bmjopen-2020-048143.
- Orchard C, Carnide N, Smith PM, Mustard C. The association between case manager interactions and serious mental illness following a physical workplace injury or illness: a cross-sectional analysis of workers' compensation claimants Ontario. Journal of Occupational Rehabilitation. 2021;31(4):895-902. doi:10.1007/s10926-021-09974-7.
Speaker Series presentations
- Occupational patterns in opioid-related harms among Ontario workers . IWH Speaker Series. June 13, 2023.
- Cannabis use and the risk of workplace injury: Findings from a longitudinal study of Canadian workers. IWH Speaker Series. March 8, 2022.
- Have cannabis use and perceptions about workplace use changed since legalization?. IWH Speaker Series. March 3, 2020.
- The link between workplace injury and fatality risks and the use of substances affecting the central nervous system. IWH Speaker Series. May 28, 2019.
- Clearing the haze: Understanding how Canadian workers use and perceive cannabis at work. IWH Speaker Series. November 20, 2018.
Interviews and articles
- IWH, OCRC project delves into role of employment in opioid crisis. Daily Commercial News. August 2, 2022. Available from: https://canada.constructconnect.com/dcn/news/ohs/2022/08/iwh-ocrc-project-delves-into-role-of-employment-in-opioid-crisis
- Cannabis use linked to higher injury risk, but only among those who use at or before work. At Work: Institute for Work & Health; No. 108, Spring 2022.
- Supervisors and people in safety-sensitive jobs using cannabis at work, researchers find. Safety + Health. April 14, 2021. Available from: https://www.safetyandhealthmagazine.com/articles/21072-supervisors-and-people-in-safety-sensitive-jobs-using-cannabis-at-work-researchers-find
- At-work cannabis use linked to work factors, including some not expected: IWH study. At Work: Institute for Work & Health; No. 103, Winter 2021.
- Is cannabis use on the rise?. Canadian HR Reporter. June 2, 2020. Available from: https://www.hrreporter.com/focus-areas/safety/is-cannabis-use-on-the-rise/330199