Research fellow Food Research Institute, Stanford, 1936-1938. Instructor University of California at Berkeley, 1938-1941, associate professor agricultural economics, associate economist experiment station, associate economist Giannini Foundation Agricultural Economics 1946-1949, professor agricultural economics, also professor economics and business administration, economist experiment station, Giannini Foundation Agricultural Economics, 1950-1979, university dean academic personnel University of California System Statewide, 1964-1967. Senior economist, assistant to president Commodity Credit Corporation, Department Agriculture, 1941-1942.
Chief economist, deputy chief requirements branch Office Question Manager General, War Department, 1942-1945. Consultant Falk Project Economics Research, Israel, 1960-1961, Agricultural Settlement Department, Jewish Agency, Israel, 1960-1961. Economics consultant various agricultural products, agencies federal and state goverments.
Fellow American Agricultural Economics Association. Member American, Pacific Coast economics associations, American Statistical Association, Econometric Society, American (Executive Committee 1951, editorial council 1954-1957, Executive Committee vice president 1962-1963), Western (Executive Committee 1950-1952, president, award for research 1951) farm economics associations, Institute Management Sciences, International Society Horticultural Sciences.