> an acquisition does not normally require existing employees to sign new contracts
My anecdata differs. I was with a company that was acquired and I had to sign a non-compete that did not have with my previous employer. (There may have been other things as well in the contract but I don't remember.) Said acquirer, BTW, has been one of the most vocal in preventing Massachusetts from putting non-compete restrictions in place
Yes. "Had to" or be terminated. As I recall, they made it pretty clear that this was not a negotiation. I'm skeptical that there would have been much wiggle room given that the company in question has been one of the most vocal opponents of the state where it's headquartered restricting non-competes through legislation. I signed because, in part, the non-compete didn't really affect me a lot because I wasn't senior enough at the time.
My anecdata differs. I was with a company that was acquired and I had to sign a non-compete that did not have with my previous employer. (There may have been other things as well in the contract but I don't remember.) Said acquirer, BTW, has been one of the most vocal in preventing Massachusetts from putting non-compete restrictions in place