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Résumé (anglais)

Objective To examine the association between precarious employment and risk of work-related COVID-19 infection in Ontario, Canada. Methods We combined data from an administrative census of workers’ compensation claims with corresponding labour force statistics to estimate rates of work-related COVID-19 infection between April 2020 and April 2022. Precarious employment was imputed using a job exposure matrix capturing temporary employment, low wages, irregular hours, involuntary part-time employment and a multidimensional indicator of ‘low’, ‘medium’, ‘high’ and ‘very high’ overall exposure to precarious employment. We used negative binomial regression models to quantify associations between precarious employment and accepted compensation claims for COVID-19. Results We observed a monotonic association between precarious employment and work-related COVID-19 claims. Workers with ‘very high’ exposure to precarious employment presented a nearly fivefold claim risk in models controlling for age, sex and pandemic wave (rate ratio (RR): 4.90, 95% CI 4.07 to 5.89). Further controlling for occupational exposures (public facing work, working in close proximity to others, indoor work) somewhat attenuated observed associations. After accounting for these factors, workers with ‘very high’ exposure to precarious employment were still nearly four times as likely to file a successful claim for COVID-19 (RR: 3.78, 95%?CI 3.28 to 4.36). Conclusions During the first 2 years of the pandemic, precariously employed workers were more likely to acquire a work-related COVID-19 infection resulting in a successful lost-time compensation claim. Strategies aiming to promote an equitable and sustained recovery from the pandemic should consider and address the notable risks associated with precarious employment.