Increasingly, a large number of individuals provide volunteer services. Demographic information known about these individuals is also increasing. Although recent efforts have attempted to examine more closely the relationships between demographic and background variables and subsequent volunteer motivation and retention, few have studied how these variables impact actual work performed by volunteers. This study provides a model for how volunteers' demographic and background variables may be related to volunteers' perceptions of the frequency and importance of their work behaviors. Although it is possible that motivation also may be related to work behaviors, this study provides information ultimately leading to a more complete picture of the potential impact of demographic and background variables on work behaviors.