A cross-cultural study was conducted on California's Multipurpose Senior Services Project, a case management project designed to improve community-based care for the elderly. The coping style differences between Hispanic and Anglo clients and the treatment style differences between Hispanic and Anglo workers were examined through structured interviews with 15 clients and 5 workers at a predominantly Hispanic site, and with 15 clients and 5 workers at a predominantly Anglo site. Differences were found between Hispanic and Anglo sites in terms of sociodemographic characteristics of the clients, client coping styles, and worker treatment styles. The data related to client coping style showed that the Anglos were somewhat more agency-oriented than the Hispanics but the report showed no appreciable ethnic difference in level of informal support. Both groups expressed dissatisfaction with the quality of familial supports. The data related to worker treatment style suggested that certain features of a case management project made it more effective and culturally relevant to the Hispanic elderly. Those features included the emphasis on paraprofessional involvement, the advocacy role of the agency, the enhancement of the client's informal support system, involvement in atypical functions, and intense case involvement. (NRB)