The Empowering Leader's Individual Time

At dinner last night, my friend and colleague Rene Silva who directs international teams for a global company, raised an interesting question relative to how much time empowering leaders need to spend weekly with individuals to help them feel engaged. Do leaders who empower their people with decision making need to spend a different amount of time with them than leaders who keep decisions to themselves? I have no data to offer, only the suggestion that the quality of their time would differ. I would also guess that empowered people need less time from their leader to feel engaged because their empowerment intrinsically engages them.