Comment by tharkun__

Agreed, this isn't a US or English only thing.

There are other languages that make this distinction. French. German. Just as other examples.

But as soon as you're past the interview, with your regular colleagues you're not gonna be on a "vous" or "Sie" basis. Maybe with your boss' boss or something, sure. Well maybe also with your boss if he's a dang stickler.

And it's been like that for well over 40 years.