Full time student 可以拿 part time offer, 可以申请签证. 反过来不行. 看移民局的具体规定. 这里:
Q1: Are all foreign students in Canada eligible for the program?
A: If you are a foreign student studying in Canada, you must meet the following criteria in order to be eligible for a work permit under the Off-Campus Work Permit Program:
you must have a valid study permit;
you must have studied full time at an eligible institution for at least six months out of the 12 months before you apply;
you must maintain satisfactory academic standing (as defined by your academic institution);
you must be enrolled in an academic program of study; and
you must comply with the conditions of your study permit and your work permit, if applicable. If you fail to do so, you will be found to be in non-compliance and will not be able to re-apply for the program.
Only for summer term, you can work as full-time (40 hrs per week), you don't really need to be full-time student,but for fall or winter term, you have to be full-time student to get work off campus permit as part-time(20 hrs per week) job