What are the possible reasons for getting my Canadian work visa denied?

There are two reasons why your work visa application might get denied; either you lack documents or you don’t meet the required qualifications. If your work visa didn’t get approved, you probably got a return or a refusal.

A returned visa simply means that you have submitted incomplete documents or the program you’re applying for already reached its quota and is unable to accept more applicants at the time. If the reason is a lack of documents, you can just fulfill the missing requirements and submit your application again. If your application was returned because your chosen immigration program has already reached its quota, you’ll only be able to apply again once they start accepting applicants.

However, if your application got refused, then the reason is the failure to meet the requirements. You can only apply again once you’re sure that you have all the required qualifications.