Servant Leadership... I think that is what leadership is supposed to be. A leader is somebody who is focused on others, on doing what is best for everybody else. Most "leaders" we see think their role is to wield power, and as a result of that mentality they suck as bosses. I always like it when I see a restaurant manager wiping a table. Many would think the manager is above such a menial task. No, his job is to be ultimitely responsible for the success of the establishment, and that means leading by example and doing what needs to be done. It's about supporting those you are trying to lead, helping them, treating them as your burden and your responsibility. If a leader is focused on "self"... they are failing. That's where I think it ties into the empoyer/employee stuff we were talking about. You invest in people - care about what's good for them - and it pays dividends.
I read this article recently about a company that focuses on investing on their employees:
Wegmans | David Rohde
Admittedly, in their case they're probably expecting long term retention.