The Users' Office welcomes CERN's guest scientists and is responsible for CERN contracts of the Associated Members of the Personnel and for their related Host State documents.
Welcome to the Users' Office
Monday, Tuesday, Thursday, Friday : 08.30 – 12.30
Monday to Friday: 14.00 – 16.00
Closed Wednesday mornings and on official CERN holidays
Limited Service before the Christmas break. The office will be open to the public as follows:
Monday 17 and Tuesday 18 December usual opening hours
Wednesday 19 December from 3.00 p.m. to 5.00 p.m.
Thursday 20 December from 2.00 p.m. to 4.00 p.m.
On Friday 21 December the service will be closed and only urgent requests will be handled.
Change of Category of Association with CERN (Change of Status)
Change of Institute or Departement
Change of average presence at CERN
Change of experiment or project for Users
Contract Extension (possible 28 days before the end of contract date)