Motivation is the driving force that causes the will to act. It comes from inner desires to fulfill needs and move in a particular direction. Motivation is key to managing employees, as it determines what they will do. It arises from an interaction between the individual and their situation. Motivated people will exert more effort than the unmotivated. Motivation theories like Maslow's hierarchy of needs and Herzberg's hygiene-motivation theory help explain human motivation. Goal setting, participation, feedback and performance reviews are important for motivation in the workplace.