The Brotherhood of Temple Beth Tzedek is a fraternal organization whose mission is to unite its members through friendship, social activity and social action, strengthen their links to and involvement in the life and future of the congregation and Conservative Judaism in Western New York, and promote greater knowledge and appreciation of Jewish life and Judaism. The mission is accomplished through a combination of social activities, leadership, tzedkah, and tikkun olam.

Among its regular activities, Brotherhood provides ushers for High Holy Day services, gifts for Bar and Bat Mitzvahs, and memorial candles for Yom HaShoah. Other events may include brunches, dinners, picnics, sporting events, trips and special performances.  Brotherhood also can provide personal assistive listening devices for use at services.