Dr. Nancy Carnide
Dr. Nancy Carnide is a 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
Projects
- Correcting for participation bias in non-probability samples using multiple reference samples. Funded by Canadian Institutes of Health Research (CIHR). Ongoing.
- Implementation of a comprehensive accommodation and reintegration program in a police service. Funded by Workplace Safety and Insurance Board (WSIB). 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.
- Ontario Life After Work Injury Study: Understanding the long-term recovery and labour market outcomes of injured workers in the shadow of COVID-19. Funded by Workplace Safety and Insurance Board. Ongoing.
Publications
- Carnide N, Landsman V, Lee H, Frone MR, Furlan AD, Smith PM. Workplace and non-workplace cannabis use and the risk of workplace injury: findings from a longitudinal study of Canadian workers. Canadian Journal of Public Health. 2023;114(6):947-955. doi:10.17269/s41997-023-00795-0.
- Carnide N, Nadalin V, Mustard C, Severin C, Furlan AD, Smith PM. Cannabis use among workers with work-related injuries and illnesses: results from a cross-sectional study of workers' compensation claimants in Ontario, Canada. BMJ Open. 2023;13(7):e072994. doi:10.1136/bmjopen-2023-072994.
- Jetha A, Navaratnerajah L, Shahidi FV, Carnide N, Biswas A, Yanar B, Siddiqi A. Racial and ethnic inequities in the return-to-work of workers experiencing injury or illness: a systematic review. Journal of Occupational Rehabilitation. 2023;33(3):432-449. doi:10.1007/s10926-023-10119-1.
- 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;49(5):330-340. doi:10.5271/sjweh.4096.
- 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.
Speaker Series presentations
- Clearing the haze: Understanding how Canadian workers use and perceive cannabis at work. IWH Speaker Series. November 20, 2018.
Interviews and articles
- Injured workers have higher rates of opioid poisonings than the general population.. Rehab & Community Care Medicine : BCS Communications Ltd.. February 11, 2025. Available from: https://www.rehabmagazine.ca/injured-workers-have-higher-rates-of-opioid-poisonings-than-the-general-population/
- Analysis: Employees no more likely to consume cannabis during work hours following legalization. NORML. January 9, 2025. Available from: https://norml.org/news/2025/01/09/analysis-employees-no-more-likely-to-consume-cannabis-during-work-following-legalization/
- Construction ranks high among occupations harmed by opioids: IWH study. Daily Commercial News. June 6, 2024. Available from: https://canada.constructconnect.com/dcn/news/associations/2024/06/construction-ranks-high-among-occupations-harmed-by-opioids-iwh-study
- ‘Unprecedented public health crisis’: Pioneering research studies links between workplaces, opioid harms. OHS Canada. February 7, 2024. Available from: https://www.ohscanada.com/features/opioids-in-the-workplace-pioneering-research-studies-links-between-workplaces-opioid-harms/
- Shining a light on opioid epidemic's link to the workplace. Canadian Occupational Safety. December 18, 2023. Available from: https://www.thesafetymag.com/ca/topics/safety-and-ppe/shining-a-light-on-opioid-epidemics-link-to-the-workplace/470527