It seems like some people are finally starting to wise up to the fact that work begins not when you arrive at the workplace, but the moment you stop doing what you want to do and start doing what you have to do in order to perform the job. That means it starts before you walk out the door, as soon as you start ‘getting ready for work’.
The simplest metric is this: would you be doing it if you were on vacation/weren’t working? If yes, then it’s not work. If no, then it’s work.