The document outlines several theories of motivation including Maslow's hierarchy of needs, Herzberg's two-factor theory distinguishing motivators and hygiene factors, Alderfer's ERG theory grouping needs into existence, relatedness and growth, and expectancy theory explaining that motivation depends on the expectation, instrumentality, and valence of outcomes. It also discusses McGregor's Theory X and Y management styles, goal-setting theory holding that specific difficult goals increase performance, and equity theory proposing that employees compare their input/outcome ratios to referents.