The document discusses several motivational theories: 1. Taylor's Scientific Approach and Mayo's Hawthorne Effect Theory addressed how working conditions and financial rewards have little impact on productivity but allowing employee suggestions, teamwork and autonomy improves it. 2. Maslow's Hierarchy of Needs proposes that our actions are motivated by satisfying needs ranging from physical to self-actualization. 3. Herzberg's Two Factor Theory separates motivators like achievement and recognition from hygiene factors like salary that cause dissatisfaction. 4. McClelland's Theory identified achievement, power and affiliation as key motivational needs that drive behavior.