This document discusses internal and external factors that impact work performance and job satisfaction. It identifies internal factors as motivation, interests, and abilities, while external factors include the physical work environment, microclimate, psychological work atmosphere, and work organization. Specifically, it describes how the physical work environment encompasses lighting, noise, and vibrations, while the microclimate includes temperature, humidity, and air flow. It notes that inadequate conditions can cause slowed movement, drowsiness, and even long-term damage. Psychological work atmosphere depends on relationships and interactions between coworkers and management. Both internal and external factors must be addressed to ensure efficient work.