In the 1960s, Al Baharna was appointed a legal adviser in
Kuwait's Ministry of Foreign Affairs (1962–64) and after that as Legal Adviser and Analyst for
Aramco (1965–68). In 1969, he was appointed Legal Adviser for Bahrain's Department of Foreign Affairs, and a year later he was made President of the Legal Committee in Bahrain's Council of State. After
Bahrain gained its independence from the United Kingdom in 1971, Al Baharna became the Minister of State for Legal Affairs in the first post-independence cabinet, a position which he held until mid-June 1995, when he was ordered to retire along with several other ministers. During his period of tenure at government offices which lasted for about 26 years (1969–1995), Al Baharna participated in drafting the modern civil legislation of Bahrain. Most notably he was a member of the ministerial committee tasked with drafting the
Constitution of 1973, which was the first such document in the
History of Bahrain. He was also Bahrain's Agent and Counsel before the
International Court of Justice in the territorial dispute case between Bahrain and
Qatar. In 1987, Al Baharna was elected as representative of Asia to the
United Nations'
International Law Commission. He was re-elected for four subsequent sessions in a row, serving continuously until 2006. In 1994, he was elected a board member of the International Council for Commercial Arbitration. Between 2003 and 2005, he served as member of the
International Court of Arbitration (of the
International Chamber of Commerce). He was also a member in numerous local, regional and international legal institutions and societies. ==Publications==