This document discusses work motivation and motivation theories including Maslow's hierarchy of needs theory. It explains that motivation is driven by physiological and psychological needs and deficiencies that activate behavior aimed at goals or incentives. Maslow's hierarchy categorizes needs into five levels from lower to higher order: physiological, safety, social, esteem, and self-actualization. It must satisfy lower level needs before progressing to higher levels, and once satisfied a need no longer motivates. The document provides examples of how businesses can apply Maslow's hierarchy to motivate employees at each level of needs.