U.O. Home


    The Users Office remains open for first-time registrations and card collection / drop-off only.

    Please kindly send an email to: users.office@cern.ch or call +41 22 767 67 67 for any other enquiries.

    • As from Monday 6 December 2021 CERN will be back in Covid-19 Level 3 - Orange. As a consequence, please note that from Monday onwards :
    1. Users shall come to the sites only if thus instructed by the Experiment Spokespersons or Technical Coordinators and in agreement with their home institutions. 
    2. Registrations in person at the Users Office or online PRT pre-registrations will be processed only on request of the experiments secretariats, Team Leaders, GAO/DAO (Group/Departmental Administration Officers) with the agreement/approval of Spokespersons, Technical Coordinators, Group Leaders or Department Heads.
    3. Those whose activities can be carried out remotely should telework.
    4. All MPs, including Users, may work on-site up to two days per week without further justification. The modalities of on-site work shall however be discussed with the supervisor to take account of work organisation constraints and office occupancy rules in particular.


    Visa - PRT - Computer account - Insurance - Accommodation
    Access card - Bank - Courses - Ombudsperson - Rules and regulations - Mobility
    EDH Contracts - French and Swiss cards - Team Leaders - Taxation - Duty travel


    In order to extend the duration of your contract, change average presence, institute or experiment,

    read the Contract Amendments information, complete the EDH document and attach a Home Institution Declaration.

    We invite you to securely share all your documents with us by uploading them
    directly on the Users Office CERNBox:


    To help with the classification of your documents, please use a common terminology:

    Kindly send us a short confirmation once the document(s) have been uploaded to 

    – New to CERNBox? Learn how to securely share your documents
    – For information on Data Privacy Protection at CERN, click
    – To take the Data Privacy Basics e-learning course, click
    – Request to exercise your Data Subject Rights