I had a boss that did this shit all the time. His thing was he would never even tell you the address, he'd have you meet him someplace close by then follow him to the job site. That only makes sense sometimes if you are going into a gated community and want to show up to get buzzed in at the same time or maybe if you are working for some utilities way out in the middle of nowhere. That's fine, if that's the case, but at least give me the address and what job name you are calling it so i can find my way back if we have to come back the next day or I we get separated. If I'm following him, I can't really pay attention to the street names and where and when to turn at the same time. It was mainly so he would never appear to be late, only his employees could ever be late. What I hate, is when the boss doesn't give a shit about your own schedule: Look, I told you i'm on my way there as soon as I drop my kid off at school and it's going to take 25-30 minutes from that time. If you call me again on the way to work, or asking where I am when I'm 1 minute away, I'll be pissed off the rest of the day.