The major changes taking place in the occupational and industrial structure of the labor force are highlighted by graphic illustrations of changing manpower needs. Some apparent trends are: (1) the very rapid rate of growth of the total labor force, (2) the relatively slow growth rate of the manufacturing labor force, (3) the rapid growth of the service industries and occupations, (4) the decline of the primary industry labor force, (5) the rapid increase in the number of working women, and (6) the strong relative decline in the need for unskilled laborers. The 31 charts and graphs included reveal major long term changes in the labor force and its industrial and sex distribution from 1931 to 1961, major long term changes in occupations from 1901 to 1961, and selected occupational changes from 1951 to 1961. (DM)