Here in NJ, all electrical work that includes "moving any wire over 10V" requires a permit and inspection.

I've only gotten electrical permits if the work is part of a bigger construction project.

As a maintenance director, we do alot of electrical work in-house including adding circuits, replacing all sorts of equipment, etc. I've also hired out some bigger work or work when we were too busy to get to it. Never asked for permits, too much hastle for me and you.

I do inspect the work to be sure I'm satisfied but mostly rely on a few contractors that I know and trust.

Not getting permits for work that nobody's going to see is the norm.

note: if you are one of my local inspectors, I above is a lie, I made it up.