The document intends to assist managers and personnel in national Air Traffic Services (ATS) administrations in the development and implementation of procedures in recruitment and pre-selection of applicants based on identified basic requirements and pre-assessment characteristics with the aim to identify applicants with a high potential to pass the formal selection (e.g. ability assessment and interview). The general principle that should be followed is to ensure that the profile of suitable applicants for the selection process consists of those characteristics that discriminate between accepted and rejected candidates in the later selection processes. This document contains tentative proposals with regard to specific applicant pre-assessment characteristics (e.g. education) which may predict the outcome of a subsequent selection.