By focusing on Ontario’s sales and service industry, MaRS uses March 2020 Labour Force Survey (LFS) data to measure the vulnerability of workers to the risk of COVID-19 exposure. For this study, they mapped the list of essential workplaces in Ontario to industries (NAICS), and used the methodology of the New York Times and the Brookfield Institute on two scores: 1) disease exposure and 2) physical proximity to others by occupation. The findings suggest that nearly 70% of sales and service workers in Ontario (1 million) have been deemed essential. More than 400,000 of them have moderate disease exposure risk and work in high physical proximity to others. This sector includes many part-time employees, people over 60, and immigrants without citizenship or permanent resident status.