 He was a Special Assistant U.S. Attorney from 1925-1927, Special Counsel to the U.S.-Mexico Claims Commission in 1929-30, and a lawyer for the Securities and Exchange Commission from 1934 to about 1950.Lobingier also served as a legal adviser to the U.S. Military government of Korea in 1946.One of Lobingier's most important professional activities was his work in the American Bar Association's Comparative Law Bureau, where he was an editor from 1907-1933.