IN THE DRASTIC translocation of employment that can be expected to occur in the postwar period, the nature of the wage structure will exercise enormous influence. Wage relationships among localities, industries, and the various segments of the labor force will help to determine plant location, population movements, who works, and what is produced. They can facilitate the orderly return to a peacetime economy or can cause serious unemployment, lead to prolonged industrial warfare, and deprive the consumer of goods and services that are important to his health and comfort. Whether in the interest of individual benefit or of public control, it is important that postwar planning take account of the nature of current wage relationships and the extent to which they differ from those of peacetime. The first of these considerations involves the question whether existing wage differentials will promote or obstruct the departure of millions of workers from the major war centers and war industries and their return to peacetime jobs. The second concerns the dependability of prewar experience as a guide in National planning, plant location, employment counselling, etc. The disclosure of drastic changes moreover, may give warning of threatening economic maladjustment. Although these questions obviously involve many aspects of wage structure, the present paper deals with only one, namely intercity differences in the level and trend of wages.