We'll separate cases that are overseas because those are a different kettle of fish.
For cases in Canada, it depends on what they're seeking to obtain. I'll start with people who are here as visitors and may ask for extensions to remain, or may be here as temporary foreign workers or students and are asking for extensions. In those cases we would normally look at the case, and if the case is simply that they don't meet the qualifications to get an extension, we would likely refuse them, send them a letter, and that would be the end of it. We would assume that these people would leave voluntarily.