Canada has just: announced an exciting benefit for international students already in Canada. All students already working on a Post-Graduation Work Permit (PGWP) can extend their work privilege by 18 months.
"Foreign nationals in Canada affected by the pandemic with an expired or expiring PGWP will have a unique chance to apply for another open work permit. These will be valid for 18 months and allow former international students to remain in Canada, continue to seek employment and build their future in this country."
https://www.canada.ca/en/immigration-refugees-citizenship/news/2021/01/government-of-canada-announces-new-policy-to-help-former-international-students-live-in-work-in-and-continue-contributing-to-canada.html