Thanks so much for your help!1) No student please, never. Always use worker's checklist IMM 5556 because you are not a student anymore. But please note that you have to write a letter of request explaining your situation very clearly. With that letter include your photocopy of transcripts,old student permit copy old passport copy, new passport copy, work permit copy, ltr of graduation.
2)Apply for a work permit with the same employer and in the "current employee" box, write "post graduation work permit"