He became a partner January 1, 1968, while serving at the newly established Paris office. Upon his return to New York, Begley headed the firm’s international practice for many years, his work being concentrated on large projects in Australia, Algeria, Latin America, Canada and Europe, for Japanese, European and Brazilian as well as American clients.
He joined as a partner on January 1, 1968, while working at the newly founded Paris office. Upon his return to New York, Begley headed the firm's international practice for many years, focusing on large projects in Australia, Algeria, Latin America, Canada, and Europe, serving clients from Japan, Europe, Brazil, and the United States.