Sunny27- I totally agree. The ability to communicate effectively and positively with all types of people is really the most important of all the personnel management skills.
When a manager treats his staff with respect and communicates the proposed expectations, the employees are driven to succeed because they understand their goals and have a cordial relationship with their supervisor.
The manager really needs to motivate his staff and motivation also comes from leading by example and working hard while developing a cordial relationship with the staff. If employees see the manager working hard, the manager instantly gains credibility and the staff will most likely follow the example.