Also not sure that Work Permit extension is under what category coz most of them need positive LMO from Service Canada, which alone takes at least 2-3 months if employer is in Ontario. If no LMO, average processing time at CIC if same employer is 83 days (paper application) and 68 days if online.
If employer hires a lawyer to do the extension, they are in the best position to give them LEGAL ADVICE re what to do.
If employer hires a lawyer to do the extension, they are in the best position to give them LEGAL ADVICE re what to do.