Researchers have suggested that dispositional optimism is related to both stress and stress outcomes. However, the nature of this relationship has not fully been explained. The authors contributed to a better understanding of this relationship by evaluating dispositional optimism, stress, overall life satisfaction, and job burnout in a sample of restaurant managers. Results indicated that stress and job burnout were significantly related; however, their relationship was not moderated by dispositional optimism, as would be suggested by the results of past research. The diminished personal accomplishment dimension of job burnout mediated the relationship between optimism and life satisfaction. Also, stress significantly impacted perceptions of diminished personal accomplishment and life satisfaction.