Maximum length of initial contract:

Users and Cooperation Associates: 3 years.
Visiting Scientists: 1 year.

 

Maximum length of subsequent contract extensions:

Users and Cooperation Associates: 5 years.
Visiting Scientists: 1 year.

A Short-term contract is a single stay/assignment of 3 months maximum and is not renewable. A new Pre-Registration form should be submitted in the event that the period of association with CERN needs to be prolonged.

The Users Office registration procedures are subject to the CERN Staff Rules and Regulations and the agreements between CERN and the Swiss and French authorities.

For the pre-registration of a COAS a cooperation agreement number is required.