This study, published in Western Journal of Medicine, sought to identify the factors that predict professional satisfaction, organizational commitment, and burnout among physicians working for health maintenance organizations. The researchers analyzed data from mail surveys of Kaiser Permanente physicians in the Northwest and Ohio regions. Results indicated that physicians who perceive greater control over the practice environment, who perceive that their work demands are reasonable, and who have more support from colleagues have higher levels of satisfaction, commitment to the HMO, and psychological well-being.