While IRCC processes your application, you can work.

If you have a work permit, you can work a full-time job until IRCC reaches a decision on your application.

had a valid study permit at the time you submitted your application, finished your study program, were qualified to work off campus without a work permit while studying, 

had a valid study permit at the time you submitted your application, finished your study program, were qualified to work off campus without a work permit while studying, 

Even if the 120-day validity time has ended, you have been permitted to work until a decision on your work request form is made. If you require proof of authorization to continue working, you can request it through a web form.