Diploma of commerce, Commercial College, Schoenenwerd, Switzerland, 1946.
Clerk Ernst Z. Schneeberg, Winterthur, Switzerland, 1947-1948. Commercial assistant Swiss African Trading Company Ltd., Kumasi, Ghana, 1948-1952, branch manager Ghana, 1952-1956, general manager Kumasi, Accra, Ghana, 1957-1966. Managing director Devag Group of Companies, Accra, Ghana, 1966-1984, chairman Ghana, since 1985.
Chairman board Ghana Pioneer Alumnium Factory Ltd., Tema, 1980-1999, Industrial Containers Ltd., Tema, since 1981. Director Aluworks Ltd., Tema. Honorary Consul-General President Republic of Finland, 1978-1998.
Dean Consular Corps, Ghana, 1983-1998.
Fellow Institute Directors (London), Ghana Institute Management (national council 1979). Member Ghana National Chamber of Commerce (central executive 1965-1970, vice president 1965-1970).
Jules Oswald and Lena (Haessig) R. Married Mercy Kwadua Kwafo, January 5, 1957. Children: Henry Frederik, Peter Jules, William Arthur, Marie-Louise.