# Regulation No 31 (EEC), 11 (EAEC), laying down the Staff Regulations of Officials and the Conditions of Employment of Other Servants of the European Economic Community and the European Atomic Energy Community, Article 4


No appointment or promotion shall be made for any purpose other than that of filling a vacant post as provided in these Staff Regulations.
Vacant posts in an institution shall be notified to the staff of that institution once the appointing authority decides that the vacancy is to be filled.
If the vacancy cannot be filled by transfer, appointment to a post in accordance with Article 45a or promotion, it shall be notified to the staff of the other institutions, and/or an internal competition shall be organised.

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Source: https://www.legislation.gov.uk/eur/1962/31/article/4 (the official version)
Page: https://openlegislation.uk/eu-regulation-1962-31/article-4
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.