He was an assistant to the general counsel of the Bonneville Power Administration in Portland, Oregon from 1939 to 1942.
He was a United States Naval Reserve Lieutenant, J.G., towards the end of World War II, from 1944 to 1946.
He was than a legal adviser to the United States delegation to the United Nations Economic and Social Council in 1946, and was in private practice in Beverly Hills, California from 1946 to 1961.
[1] On May 18, 1965, Hill was nominated by President Lyndon B. Johnson to a seat on the United States District Court for the Southern District of California vacated by Judge William Carey Mathes.
He assumed senior status on October 15, 1980, and served in that capacity until his death, on March 18, 1998, in Los Angeles.