Table 2

COVID-19 cases and hospitalisations of workplace outbreak-associated cases and SIR for cases, by industry and period among workers aged 15–69 years in Ontario, Canada, reported 1 April 2020–31 March, 2021

Time period and industryWorkplace outbreaksCasesHospitalisationsSIR in cases*
NN%†N%†SIR (95% CI)
Period 1 (1 Apr–31 Aug 2020)
 Accommodation and food service16491%42%0.4 (0.3 to 0.5)
 Agriculture29133920%2111%24.9 (23.5 to 26.3)
 Construction11431%00%0.1 (0.1 to 0.2)
 Education17451%00%1.2 (0.9 to 1.6)
 Healthcare and social assistance549405061%13070%9.3 (9.0 to 9.6)
 Manufacturing—food324747%179%5.0 (4.6 to 5.5)
 Manufacturing—other633135%63%0.8 (0.7 to 0.9)
 Mining and utilities1210%11%0.5 (0.3 to 0.7)
 Other service industries19701%11%0.1 (0.1 to 0.2)
 Public administration5320%32%0.2 (0.2 to 0.3)
 Retail trade16421%00%0.1 (0.1 to 0.1)
 Transportation and warehousing291642%42%0.8 (0.7 to 0.9)
 Wholesale trade360%00%0.1 (0 to 0.1)
Period 2 (1 Sep–31 Dec 2020)
 Accommodation and food service1145284%65%0.6 (0.6 to 0.7)
 Agriculture265324%43%2.4 (2.2 to 2.6)
 Construction581921%22%0.1 (0.1 to 0.1)
 Education4459237%86%0.8 (0.8 to 0.9)
 Healthcare and social assistance1113586245%6046%2.6 (2.6 to 2.7)
 Manufacturing—food728617%54%2.6 (2.4 to 2.8)
 Manufacturing—other214157712%1512%0.8 (0.7 to 0.8)
 Mining and utilities6190%00%0.1 (0.1 to 0.1)
 Other service industries1004574%75%0.2 (0.2 to 0.2)
 Public administration311301%11%0.3 (0.2 to 0.3)
 Retail trade965284%75%0.3 (0.3 to 0.3)
 Transportation and warehousing6411539%129%1.1 (1.0 to 1.1)
 Wholesale trade322332%32%0.5 (0.4 to 0.5)
Period 3 (1 Jan–31 Mar 2021)
 Accommodation and food service883913%94%0.5 (0.5 to 0.6)
 Agriculture787055%94%4.3 (4.0 to 4.6)
 Construction1185624%63%0.3 (0.3 to 0.4)
 Education48411387%208%1.1 (1.1 to 1.2)
 Healthcare and social assistance1011547135%5121%2.2 (2.2 to 2.3)
 Manufacturing—food659916%2711%2.4 (2.2 to 2.5)
 Manufacturing—other267245016%5623%1.1 (1.0 to 1.1)
 Mining and utilities14750%10%0.3 (0.2 to 0.4)
 Other service industries1466884%198%0.3 (0.3 to 0.3)
 Public administration533762%52%0.7 (0.6 to 0.8)
 Retail trade1287185%115%0.3 (0.3 to 0.3)
 Transportation and warehousing106173911%229%1.5 (1.4 to 1.5)
 Wholesale trade392211%42%0.4 (0.3 to 0.4)
  • *SIR was estimated by the ratio of workplace outbreak-associated COVID-19 incidence rate (per 200 000 work hours) to the overall incidence rate (per 200 000 hours awake) in Ontarians aged 15–69 years.

  • †The proportion (%) of cases and hospitalisations represent the share of outcomes from each two-digit North American Industry Classification System 2017 industry within the designated time period.