The temporary public policy that allows certain temporary residents in Canada with visitor status to apply for a work permit from within Canada has been extended until February 29, 2023. While all visitors in Canada can apply for an employer-specific work permit under this public policy, only those who held a work permit in the last 12 months may request interim authorization to work.
The public policy came into effect on August 24, 2020, and the eligibility criteria were expanded to allow all visitors who are in Canada with valid temporary resident status to apply inland for an employer-specific work permit, regardless of when they arrived in Canada. The public policy is being extended until February 28, 2023.
More information on the website of IRCC is here.