Thanks for answering Tapas Adhikary! This is a great pot. And thanks for the clarification questions Milica Maksimović. Now it is clear and totally valid. And, I think this goes far beyond leaders. Every person should be considerate of other people around them and not taking advantage of them.
For the delegation part, I think it is also so important to value and promote the people that are doing the work. Nothing worse, than a leader that falsely claims a team effort as his or her achievement.