Additionally, the format of the worship service and, therefore, the ritual that the rabbi uses may vary even among congregations belonging to the same branch of Judaism. Rabbis have greater independence in religious expression than other clergy, because of the absence of a formal religious hierarchy in Judaism. Instead, rabbis are responsible directly to the board of trustees of the congregation they serve. Those serving large congregations may spend considerable time in administrative duties, working with their staffs and committees. Large congregations frequently have associate or assistant rabbis, who often serve as educational directors.
All rabbis play a role in community relations.
For example, many rabbis serve on committees, alongside business and civic leaders in their communities to help find solutions to local problems. Rabbis also may write for religious and lay publications and teach in theological seminaries, colleges, and universities. Although the majority served congregations, many rabbis functioned in other settings. Some taught in Jewish studies programs at colleges and universities, whereas others served as chaplains in hospitals, colleges, or the military. Additionally, some rabbis held positions in one of the many social service or Jewish community agencies.