Unless there's a policy establishing otherwise, it's going to get worse, especially if it's coming from the top. If it's something that bothers you then try to

Unless there's a policy establishing otherwise, it's going to get worse, especially if it's coming from the top. If it's something that bothers you then try to ride it out, but have a foot out the door in case you hit your breaking point. It always starts with little subtleties, harmless emails like "check this out". Soon you find yourself on a Monday morning getting accosted by your boss or overly-ambitious co-worker before you even had the change to get coffee with "did you get a chance to take a look at that thing I sent?" Eventually these micro-telegraphs take their toll and you find yourself feeling guilty about not participating in the Slack chat at 2am. Now the precedent of being available whenever the boss has the whims to work is set, whether you like it or not. Disclaimer: I'm all for working after hours as it merits, I just prefer to do it on my schedule or on an as-critically-needed basis.