Technology has undoubtedly made us work harder. It used to be that once you left the office (at 5pm), you were unreachable unless you were dumb enough to answer your home phone. Even in the early days of cell phones, coverage could be so spotty that you could ignore a call and later claim to have been in a "dead zone", but you can't do that now unless you're in the middle of the Grand Canyon.
Now, with smart phones and wifi, you are effectively on call 24x7, which sucks.
I never had to run to a payphone for work, but I did for other things - like letting someone know that you were at the airport, etc.
I also lived through the pager/beeper phase of technology - straight numbers, and then text-based, so I'm familiar with getting the "-911" pages that meant it was an emergency and call back asap (which it rarely ever was..).