He is best known as the co-owner of the family company Westye Egeberg & Co, founded by his grandfather.[2] He was hired in the company in 1867, and in 1874 he took over the company from his father together with his brother Ferdinand. He acquired burghership in Kristiania in 1882.[1]
He was a member of the executive committee of Kristiania city council from 1891 to 1894.[1] He was a deputy representative to the Parliament of Norway during the term 1892–1894, representing the urban constituency Kristiania, Hønefoss og Kongsvinger.[4] He was also a board member of Kristiania Port Authority, and chaired Christiania Handelsstands Forening from 1904 to 1908. In 1905 he was declared a lifetime member of the International Law Association.[1] He was also behind the construction (1899–1901) of the Egeberg Castle, which he sold after his wife's death.