Research in mental health services for working-age adults has repeatedly shown that work is found more satisfying, if more stressful, by community practitioners than by hospital-based staff. This study examined whether similar differences exist in services for older adults and how this might be influenced by the high proportion of nonprofessionally qualified workers in inpatient settings for mentally infirm older people. The Work Environment Scale was given to all practitioners in a mental health service for older adults in a single London borough. Adjusting for the effect of professional status, community practitioners rated involvement, task orientation, and supervision more positively than institutional staff, but gave less favorable ratings for work pressure and physical comfort. Nurses rated peer cohesion, supervision, autonomy, and innovation more positively than nursing assistants, after controlling for type of setting. Multivariate modeling confirmed that type of setting and professional group were both associated with workplace satisfaction, accounting for 24% and 13% of the variance, respectively. The study highlights aspects of the work environment of mental health staff working with older adults that might benefit from attention.