Pretty much all electrical work by law/code requires a permit and an ESA inspection. INCLUDING work done by licensed electricians. Technically something as simple as adding an new outlet needs a permit. If you pay someone to do the work they MUST be licensed.
The unlicensed home owner is legally allowed to do electrical work on their own home in Ontario IF they live in the house (you cannot do work say on a rental you own). It requires a permit and an ESA inspection, same as above. I know I am completely rewiring my house with a permit.
As part of my rewire I am adding a 240V (50A) stove outlet in the garage. For welder or future electric car...The charging stations can be had with a plug instead of hard wired, if not hard wired they can also be excluded from the sale of the home.
Now I am sure some electricians do all kinds of work without a permit, just like contractors, plumbers, etc. do all kinds work without a permit, but the rules say NO. Hope this clears it up...
https://www.esasafe.com/consumers/home-buying-selling-and-renovating/do-it-yourself/#top