1 you have to explain the process of effectiveness and efficiency.
2 since all 5 functions of management are done after the completion of one another. So all 5 functions are must in every job or work which is planning, organising, staffing, directing and controlling.
3 After doing or cooperating with their work giver or their boss in the best way or manner as a reward he or she will fulfill the employee's personal objectives which are giving competitives salaries, satisfying their diverse needs,etc....