Arthur M. Okun (1928-1980) was an economist widely known for his formulation Okun's Law, which provides the mathematical relationship between the rate of unemployment and the gross national product. Okun served as a professor economics at Yale University from 1952 to 1963. He was involved with the Council of Economic Advisers, first as a staff economist from 1961 to 1962, as a member of the council from 1964 to 1968, and as chairman of the council from 1968 to 1969. He was a senior fellow at the Brookings Institution from 1969 to 1980.
From the description of Okun, Arthur M., 1928-1980 (U.S. National Archives and Records Administration). naId: 10582942