‘Offices’ is normally used to mean 3 specific services: OIB, OIL and the PMO but not EPSO, the OP or OLAF. Unfortunately, the term is used differently elsewhere, so please always check! The draft Commission budget 2026 (pp. 958-963) uses ‘Offices’ to cover all 6: OIB, OIL, PMO, EPSO, the OP and OLAF as do the General Implementation Provisions (GIP) C(2011)1264.