Start on time and end on time. Everyone has suffered through meetings that went waybeyond the scheduled ending time. That situation would be fine if no one had anything else to do at work. But in these days of faster and more flexible organizations, everyone always has plenty of work on the to-do list. If you announce the length of the meeting and then stick to it, fewer participants will keep looking at their watches, and more participants will take an active role in your meetings.