Human resources approach: however, during early 60s the ‘pet milk theory', (advocating that happy workers are productive workers or happy cows give more milk) of human religions had been largely rejected. Recognizing that fact that the workers are unique in their own way having individual needs. It was recognised that each employee is a distinctive and highly complex individual with different wants, requirements and values. What motivates one employee can't motivate another and being happy or feeling good may have little or no impact on the productivity of the certain employees. Slowly but steadily, the trend toward treating employees as assets or resources emerged. The Human resource approach consider that the job or the task itself is the primary source of satisfaction and motivation of the employees the emphasis in the human resource approach is on individual involvement in the decisions made in the organization.