Or some other VIOP number. This should be used for anything work related. Your employer should never have your real number. GV numbers function like real cell numbers call and text capable. But you get to decide how you are notified. So you can “turn off your number” so that if your boss calls when it's your day off, it goes straight to voicemail, and you're not bothered. Same for text, if you have do not disturb active you won't even get a notification if someone texts your GV number.
Just a tip.