The IRCC, on March 29th, has announced that a temporary public policy that allows visitors to apply for and receive a work permit without having to leave Canada will be extended to August 31, 2021. The criteria will also be modified to allow any visitor who has a valid job offer to apply for an employer-specific work permit, regardless of the date they initially entered Canada.
It is effective from April 1, 2021.
For more information: https://www.canada.ca/en/immigration-refugees-citizenship/news/notices/extension-public-policy-visitors-apply-work-permits.html
