What is Herzbergs motivation hygiene theory?

This theory classifies the factors needed to motivate people into two categories: hygiene factors and motivating factors. Hygiene factors are necessary for motivation but not sufficient; they do not bring satisfaction, but they prevent dissatisfaction. Some examples are compensation; company policies; level of supervision or ownership of the assigned work; relationship with superiors, subordinates, and peers; and working conditions. Motivating factors are factors that bring (or increase) job satisfaction. Some examples are challenging work assignment, opportunity for career advancement and accomplishments, opportunity for growth, sense of responsibility, and recognition.