It is not specific to "back to the office". You generally can't "force" good employees to do things they don't want to. You can get them back to the office, so

It is not specific to "back to the office". You generally can't "force" good employees to do things they don't want to. You can get them back to the office, some of them don't mind, some may even want it, or you may be able to negotiate it with an appropriate compensation, but you can't force them or they will just leave. Same for everything else: being on-call, travel, overtime work, flexible hours, etc...