The explanation for this discrepancy is that our Domain taxonomy (and therefore Functions considered under these domains) does not cover the entire workforce. Major Occupation groups not covered include: Social service and Community Occupations, Construction Occupations, Legal Occupations, Hospitality and Catering Occupations, Educational Occupations, Farming related occupations among others. Thus, the sum of the Talent pool across Domains is less than the Working population in a given location.