Instructor, tutor economics Harvard, 1934-1941, Radcliffe College, 1940-1941. Associate professor, department chairman economics and business administration Mount Union College, 1941-1942. Economist div. tax research Treasury Department, 1942-1949.
Assistant director tax advisory staff Secretary of Treasury, 1949-1951, taxation specialist, 1951-1953. Fiscal economist, tax analysis staff United States Treasury, 1953-1961, chief business taxation staff, assistant director, office tax analysis, 1961-1972. Head Richard E. Slitor Associates, from 1972.
Federal executive fellow Brookings Institution, 1963-1964. Visiting professor economics U. Massachusetts, 1967-1968. Consultant National Commision on Urban Problems, 1967-1968, Colombian Commission on Tax Reform, 1968, Committee for Economics Development, 1970-1971, Research and Development Corporation, 1972-1974, Advisory Commission Intergovtl.
Relations, 1973-1975, Environmental Protection Agency, 1976-1979, Council Environmental Quality, 1976-1977, Federal Reserve System, 77-78, National Education Association, 1980-1982, others.