In consideration of the many problems arising from our present-day complex social and industrial organization, and, more particularly, in the consideration of the many perplexing problems that daily confront those who are directing the war effort of the Nation, there is a very real and pressing need for a comparable series of occupation and industry statistics a need not only for statistics that show as nearly as may be the occupations and industries of the workers at the most recent Federal census, but, also, for statistics that indicate the nature and direction of the trends in occupational and industrial distribution of the Nation's labor force.