Welcome to the Users' Office

Annual End of Year closure

The office will be open to the public:

  • on Monday 18 and Tuesday 19 December at the usual opening hours,
  • on Wednesday 20 from 3.00 pm to 5.00 pm and
  • on Thursday 21 from 2.00 pm to 4.00 pm.

On Friday 22 December the service will be closed and only urgent requests will be handled.

CERN will be closed from 23 December 2017 until 7 January 2018 inclusive.


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.

Users' Office location : Bldg. 61MapCERN App
Email contact :
Opening Hours: Monday, Tuesday, Thursday, Friday : 08.30 – 12.30
Monday to Friday: 14.00 – 16.00
Closed Wednesday mornings and on official CERN holidays

Users' Office Queuing system

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