This document summarizes a university lecture on motivation theories. It defines motivation and discusses both content and process theories of motivation. It outlines several key content theories, including Maslow's hierarchy of needs, Herzberg's two-factor theory, and McClelland's three needs theory. Process theories covered include equity theory and expectancy theory. The document provides examples and explanations of each theory. It also discusses challenges in motivating diverse groups and offers practical suggestions for motivating employees.