Managers often deal with great deal of paperwork and people. Although paperwork is usually the most tedious, it's often the most predictable.

People aren't predictable. They have moods, illnesses, career expectations, crises in their family lives, etc. The supervisor's technical expertise is often useless when it comes to supervising people.

Professor Bhiku Pareskh, from the Centre for the Study of Democracy at the University of Westminster once said:

Diversity is a fact of modern life. It is an unavoidable fact of life because not all differences can be rationally and conclusively resolve. It is also an important source of moral, economic and social energy. It brings together different ways of looking at life and therefore enables us to learn from others and deepen our insights into human life.

Top management sometimes plans extensively for strategic changes in an organization, but places very little emphasis on how to handle the transition from the old way to the new. When this happens, the new goal, system, organization or project is simply presented as a direction or decision to a work team. When the team has not been consulted, this comes as a shock.