Ergonomics aims to fit the work environment to the employee by improving the match between them. This can provide improved comfort, reduced injuries, higher productivity and better job satisfaction. Ergonomics focuses on reducing risk factors like awkward posture, high repetition, excessive force, contact stresses, vibration and extreme temperatures. The goal is to design jobs that fit people by accounting for individual differences. The benefits include improved efficiency, quality and satisfaction, while risks involve increased errors and fatigue. Ergonomics draws from fields like engineering, medical sciences, biomechanics, mathematics and behavioral sciences.