He was the inaugural Chief Judge of the Commonwealth Court of Conciliation and Arbitration, in office from 1926 until his death in 1938.
He grew up in Melbourne and was educated at St Stephen's Grammar School and a State school, both in Richmond and at Brunswick Business College before reaching Trinity College,[1] University of Melbourne, graduating Bachelor of Arts (1890), Bachelor of Laws (1893), and Master of Laws (1897).
In 1919, Dethridge chaired the Royal Commission on industrial troubles on Melbourne wharfs.
He was named as the inaugural Chief Judge of the Commonwealth Court of Conciliation and Arbitration in 1926, following its reform by the Bruce government.
[4] He was appointed chair of the Royal Commission on doctors' remuneration for national insurance service and other contract practice in 1938, but died suddenly before the report was completed.