We can keep everyone happy
With the line between work and free-time increasingly blurry in American corporate culture, I suspect most larger employers will abuse this increased connectivity.
If you can be reached, you can work.
Call it “employee engagement“, “being a team player“, or an expectation of work being paramount, but in most American businesses the concept of truly free time is odd. You should be able to be reached. And if you can’t, why not? I’ve seen it myself recently. And have been on the receiving end of it, too.
But it is what is happening. And probably won’t stop in our culture. All someone like myself can do is push (No, I can’t take calls in New Mexico) or advocate (Bob is on vacation. Should we be calling him?). and fight the good fight. Note both my positions were not popular. :)