1. Theories
   1. Hawthorne studies
   2. Maslow's Hierarchy of Needs
      1. self-actualisation
      2. esteem needs
      3. social needs
      4. safety needs
      5. physiological needs
   3. Herzberg's Job Satisfaction
      1. hygiene factors
      2. motivational factors
   4. McGregor
      1. Theory X
      2. Theory Y
   5. Theory Z
   6. Expectancy Theory
   7. Equity Theory
   8. Reinforcement Theory
2. Improve
   1. compensation
      1. merit
      2. across-the-board
      3. incentive
   2. job security
   3. work schedule
      1. flextime
      2. compressed workweek
      3. job sharing
   4. employee involvement
      1. job enlargement
      2. job rotation
      3. empowerment
      4. teamwork
      5. open-book management