Content theory is a subset of motivational theories that try to define what motivates people. Content theories of motivation often describe a system of needs that motivate peoples' actions. While process theories of motivation attempt to explain how and why our motivations affect our behaviors, content theories of motivation attempt to define what those motives or needs are. Content theory includes the work of David McClelland, Abraham Maslow and other psychologists. McGregor's Theory X and Theory Y Douglas McGregor proposed two different motivational theories. Managers tend to believe one or the other and treat their employees accordingly. Theory X states that employees dislike and try to avoid work, so they must be coerced into doing it. Most workers do not want responsibilities, lack ambition, and value job security more than anything else. McGregor personally held that the more optimistic theory, Y, was more valid. This theory holds that employees can view work as natural, are creative, can be self-motivated, and appreciate responsibility. This type of thinking is popular now, with people becoming more aware of the productivity of self-empowered work teams. ERG theory ERG Theory was introduced by Clayton Alderfer as an extension to the famous Maslow's Hierarchy of Needs. In this theory, the existence or physiological needs are at the base. These include the needs for things such as food, drink, shelter, and safety. Next come the Relatedness Needs, the need to feel connected to other individuals or a group. These needs are fulfilled by establishing and maintaining relationships. At the top of the hierarchy are Growth Needs, the needs for personal achievement and self-actualization. If a person is continuously frustrated in trying to satisfy growth needs, relatedness needs will re-emerge. This phenomenon is known as the frustration-regression process. Herzberg's Motivation-Hygiene theory (Two-factor theory) Frederick Herzberg felt that job satisfaction and dissatisfaction do not exist on the same continuum, but on dual scales. In other words, certain things, which Herzberg called hygiene factors, could cause a person to become unhappy with their job. These things, including pay, job security, and physical work environment, could never bring about job satisfaction. Motivating factors, on the other hand, can increase job satisfaction. Giving employees things such as a sense of recognition, responsibility, or achievement can bring satisfaction about. Need theory David McClelland proposed a context for understanding the needs in people, which holds significance in understanding their motivations and behaviors. It is