The I.L.O. has recently revised its projections of the labour force for every country up to the year 2000, using and original method which reflects changes in population structures found in the censuses of the last 30years. This article explains
of the century. Leontief's results have a direct bearing on the size of the labour force, an area in which economics and demography meet. They throw a new light on the I.L. O's projections and will form the subject matter of the second part of this article.