Jack Nusbaum, who led Willkie Farr & Gallagher for 23 years before stepping down in 2010, has died at the age of 80, the firm announced Tuesday.

Nusbaum first joined Willkie as an accounting clerk in 1962. Three years later, he was promoted to an associate, and in 1971 he made partner. This year was his 50th year as a Willkie partner.