The present bulletin is con- cerned mainly with setting forth the results of a modest attempt to throw some light on this last point by means of a comparison of a small sample of the persons coming under the Unemployment Insurance Act with data available in respect of the same persons from the National Registration. [...] The increase in the Forces, therefore, is not very different from the 14,000 per manth used in the earlier bulletin as the average rate from the beginning of the War to May, 1941, The actual gain between April 1 and September 1, 1941 in the sample of a million and a half employees on which the general index is based has been 249,188 The distribution of this gain is shown by main industry groups in [...] The Bureau is indebted to the co- operation of the Department of National War Services, under which the National Registration is administered, and to the Unemployment Insurance Commission. [...] Table 4. shows the number of wage-earners having the same employer and different employers between the National Registration of August, 1940, and the commencement of operations on July 1, 1941, of the Unemployment Insurance Commiss- ion. [...] The proportion of students seems to be smaller, in males at least, than the proportion graduating and entering industry in a year as calculated roughly in the previous bulletin (see also Table 4) This is partly due to the fact that a large body of students would normally find their first job in the month of July, which is not included in the period covered.