It depends what you are on time for. I occasionally miss a train or a flight and that is deliberate because I optimise for minimal unproductive time waiting. T

It depends what you are on time for. I occasionally miss a train or a flight and that is deliberate because I optimise for minimal unproductive time waiting. The train/plane will leave without me if I am not there. However if people are persistently late to multi-attendee meetings it increases total wait time over all the attendees which is not optimal for the group. The more people are present and the less possible it is to start without them, the more wait time is being introduced by any person's lateness. Of course, there are far too many meetings with far too many people but that is a separate problem. If someone just needs to chat with me at some point online or at my desk if in the office, we will usually agree a vague time slot as that is a 2 sided problem only and I can work on other things until they arrive. If they ask me to meet in a particular place where I cannot work while in a wait-state, I expect them to be on time.