If you manage a large business, department or organization, you'll want to make a conscious effort to be visible. Don't spend your days behind closed doors or constantly in meetings.
Walk around. Make conversation with your team members. It's important that you maintain visibility with your employees. That also means associating with employees at all levels. Don't limit your time for only your direct reports.
The benefits for your employees are that they get to know you better and feel that you are more in tune with what's going on. The benefits to you are that you'll build a stronger rapport with your team, and you'll undoubtedly hear about good things and bad things through casual conversation that you would have missed if you had been less visible.