This document summarizes several theories of motivation and their application to employee performance. It discusses Maslow's hierarchy of needs which includes physiological, safety, belonging, esteem and self-actualization needs. Herzberg's two-factor theory identifies satisfiers like achievement and recognition that motivate employees, and dissatisfiers like policies and supervision that cause dissatisfaction. Alderfer's ERG theory groups needs into existence, relatedness and growth. The document examines how motivating employees through rewards, relationships and opportunities for growth can improve performance in organizations.