During World War I, he volunteered to serve in the United States Army but saw no combat action.
He then earned a LL.B.
from Columbia Law School in 1920, and started practicing at Rose & Paskus in New York City.
Together with Frank Weil and Horace Manges he founded Weil, Gotshal & Manges in 1931, which as of 2016 is one the largest law firms in the world.
He also became very active in civic affairs and was, at one time, chairman of the American Arbitration Association and the United Jewish Appeal.He married Violet Kleeman of Nashville in 1918.
They had one daughter, Sue Ann Gotshal, who married John L.