In 1903, Bernstein became managing director of the Hebrew Sheltering Guardian Orphan Asylum in
Pleasantville. He held that position for fifteen years, during which time he organized and developed one of the largest cottage home plans in the country for the care and education of dependent children as well as the Home Bureau of the Hebrew Sheltering Guardian Society, the first comprehensive Jewish foster home bureau. He then worked as executive director of the Bureau of Social Research in New York City, conducting surveys on child welfare and juvenile delinquency in the Jewish communities of
Chicago and
Philadelphia in 1919 and New York City in 1920. In 1921, he moved to
Pittsburgh, Pennsylvania, and became director of the local Federation of Jewish Philanthropies. He began lecturing for the
University of Pittsburgh Department of Philosophy in 1925, and in 1928 he became special lecturer on child care at the Graduate School of Jewish Social Work in New York City. Bernstein was a member of a committee that studied and inspected child-caring institutions in New York City from 1915 to 1916. In the 1930s, he was a pioneer in the movement to establish Jewish community councils in American cities. Bernstein was chairman of the child welfare section of the New York State Conferences of Charities, chairman of the Social Service Exchange of Pittsburgh, president of the Allegheny Board of Visitors, director of the Pittsburgh Federation of Social Agencies, an executive committee member of the Pennsylvania State Conference of the National Child Labor Committee, president of the National Conference of Jewish Social Service in 1925, president of the New York Association Modern Language Teachers from 1900 to 1902, president of the Social Workers Club, honorary president of Askon, and a member of
B'nai B'rith. He attended
Congregation Rodef Shalom. == Personal life ==