Honorable Ranlee has graciously attributed to my worthless self a title too lofty. 
Working without a work permit (or exemption) is something no employer should ever ask you to do, even though lots of them do.
There used to be a sticky going on for pages and pages explaining this kind of stuff and also iirc explaining that we shouldn’t call a visa exemption a “landing visa” because that’s something completely different.
Found it: ARC, Work Permit and Visa questons? Read this
Which sends you here: ARC's, Work Permits and Visas - what do you need to know? - #147 by The_Ghost
At 150 posts dating back to 2011, it could probably use a good edit one of these days…