In 1962, at the age of 22, he was appointed maggid shiur at Yeshiva Beth Harashal in Jerusalem.
Five years later, he became the rosh yeshiva of that yeshiva.
In 1973 he began teaching at the Lifshitz Teachers Seminary in Jerusalem.
In 1975 he was sent by the Jewish Agency to serve as a rabbi in Tehran, where he hosted Rabbi Ovadia Yosef during his historic trip to Iran.
In Tehran, Ben Haim began serving the local community of Mashadi Jews as a rabbi.
In 1979, in the wake of the Iranian Revolution, he came with his family to the United States and served as the chief rabbi of the Mashadi Persian Jewish community of Long Island (UMJCA).
Since 1993, he has lectured at Yeshivat Rabbeinu Yitzchak Elchanan (RIETS) at Yeshiva University.

Ben Haim was considered a close friend of Mordechai Eliyahu and delivered many eulogies for him.
Ben Haim runs the Beth Din Mekor Haim, there he addresses the needs of the Queens Jewish community in matters of marriage, divorce, conversion, civil law, and kosher supervision.
Ben Haim runs a Kolel affiliated with the Beth Din as well.
One of Ben Haim's students is Avraham Gaon, the rosh yeshiva of Yeshiva Etzion in Fresh Meadows, Queens.
In 1962, at the age of 22, he was appointed maggid shiur at Yeshiva Beth Harashal in Jerusalem. Five years later, he became the rosh yeshiva of that yeshiva. In 1973 he began teaching at the Lifshitz Teachers Seminary in Jerusalem. In 1975 he was sent by the Jewish Agency to serve as a rabbi in Tehran, where he hosted Rabbi Ovadia Yosef during his historic trip to Iran. In Tehran, Ben Haim began serving the local community of Mashadi Jews as a rabbi. In 1979, in the wake of the Iranian Revolution, he came with his family to the United States and served as the chief rabbi of the Mashadi Persian Jewish community of Long Island (UMJCA). Since 1993, he has lectured at Yeshivat Rabbeinu Yitzchak Elchanan (RIETS) at Yeshiva University.
Ben Haim was considered a close friend of Mordechai Eliyahu and delivered many eulogies for him. Ben Haim runs the Beth Din Mekor Haim, there he addresses the needs of the Queens Jewish community in matters of marriage, divorce, conversion, civil law, and kosher supervision. Ben Haim runs a Kolel affiliated with the Beth Din as well. One of Ben Haim's students is Avraham Gaon, the rosh yeshiva of Yeshiva Etzion in Fresh Meadows, Queens.
Eliyahu Ben Haim