Study and Work in Canada

On-Campus Work:
You may work on campus at the institution where you study without a work permit, if you are a full-time student at a publicly-funded post-secondary institution or a private institution authorized by provincial statute to confer degrees.
You require a work permit if the intended employment is an essential and integral part of your course of study (this does not apply to accounting students, medical interns or medical residents); or if the intended employment is related to an approved research or training program.
http://www.cic.gc.ca/english/study/work-oncampus.asp


Off-Campus Work - NEW!:
The Off-Campus Work Permit Program allows foreign students at some publicly-funded post-secondary educational institutions in Canada to work off campus while completing their studies. For eligibility and requirements see the Working Off-Campus section of the Citizenship and Immigration Canada website.
http://www.cic.gc.ca/english/study/work-offcampus.asp


Post-Graduation Work
The post-graduation work program allows some graduating students to gain Canadian work experience in their field of study. Since May 16, 2005, this program has allowed certain students to work for up to two years after their graduation. For eligibility and requirements visit the Post-Graduation Work Permits section of the Citizenship and Immigration Canada website.
http://www.cic.gc.ca/english/study/work-postgrad.asp
Note: In some circumstances, the work permit may be valid for less time than the length of your studies.


Other Work and Study Programs
Find an answer for all this Question:
1- How do I find out if I can work while studying in Canada?
2- Can I still work in Canada even if I don’t apply under a student-related work permit program?
3- If I receive an off-campus work permit for how long is it valid?
4- Is there a fee to apply for an off-campus work permit?
5- Once I apply for an off-campus work permit, how long will it take to process my application?
6- If I am eligible and the institution where I study is participating in the program, can I apply for a job off campus right away, or do I have to wait until I receive my off-campus work permit?
7- Are there any restrictions on where I can work or the type of job that I can apply for under the Off-Campus Work Program?
8- Are there any restrictions on how many hours I can work once I receive my off-campus work permit?
9- I am considering studying in Canada. Can I apply for an off-campus work permit at the same time as I apply for my study permit?
10- What must I do to extend my stay or change my status (for example, from a full-time student to a full-time worker)?
11- Why is the Off-Campus Work Permit Program not available to foreign students when they start their studies?
12- How do I find out if the institution where I study participates in the Off-Campus Work Permit Program?
http://www.cic.gc.ca/english/information/faq/study/index.asp

May I leave Canada and return?
Yes. However, should your student authorization expire while you are out of Canada, you may not be allowed to return to study. If you initially required a visitor visa in addition to a study permit, you will be able to return to Canada providing your visa, passport and study permit are valid.