“…Table 1 presents the composition in terms of gender, education, age and geographical origin of the European population (EU27), the Commission's total staff, and Commission's SNEs. While the first three sociodemographic characteristics are commonly included in RB studies (Kennedy, 2014), the last characteristic (i.e., geographical origin) arguably becomes a more important dimension of representation for international bureaucrats (Egeberg, 2006;Gravier, 2008Gravier, , 2013Trondal, Suvarierol, & van den Berg, 2008). Table 1 documents geographical origin of officials by wave of enlargement (which reflects a country's EU membership seniority): countries in the original EU6 (Belgium, the Netherlands, Luxembourg, Italy, France and Germany) vs. EU15 (EU6 plus Sweden, Finland, Denmark, Spain, Portugal, Austria, Ireland, United Kingdom and Greece).…”