All EPSO tests, and how they are scored, are closely analysed in order to ensure that they are fair and do not impact adversely on particular groups of candidates. EPSO is in the process of becoming compliant with the brand new ISO Standard for Assessment Procedures and is already in line with the UN Convention on the rights of persons with disabilities.

A key aspect of fairness is gender balance and EPSO strives to attract and select a balanced pool of male and female applicants. In practice, men and women apply in disproportionate numbers for some profiles. In general, however, applications are balanced, and the most recent AD Generalist competition produced 50% male and 50% female successful candidates.