CERN Meyrin site aerial views
A view from 200m (Image: CERN)


Last update 15 September 2020 

Since 18 May CERN has been implementing a flexible and safe plan for the gradual re-start of all on-site activities. As 7 September, this re-start will enter a new phase with those on the CERN pay roll returning to the site for at least 50% of their working time. 

The return on site of all categories of personnel is supported by COVID-19-specific health and safety measures and recommendations, which are collated on this webpage.  

These are based on the Memorandum from the Director General issued on 5 May, and its Annex 'CERN Instructions on COVID-19-related health and safety measures', as well as Appendix A (HVAC - Heating, ventilation and cooling), Appendix B (Office Work place) and the 'CERN Instructions on COVID-19-related health and safety measures for contractors'. 

The measures and recommendations are updated regularly. 

Our highest priority continues to be protecting the health and well-being of all people on site and those still working remotely. 

Frequently Asked Questions (FAQ) for CERN personnel, are available on a dedicated page.


Contact numbers for Support and Information :

COVID-19 helpline at CERN:  +41 22 766 7777 from Monday to Friday (8 a.m. - 5 p.m.)

Highlighted updates

Please read through all the sections marked *New-Date* for the most recent changes. Highlighted below are the most important updates.

  • Quarantine for travelers arriving from high risk countries/areas for COVID-19 Infection *Latest update 13-09-2020*

Access to CERN sites is not allowed for 14 days after arrival from a country/area that features on at least one of the lists (Switzerland or France) of high risk countries and areas for COVID-19 infection (see below). 

Switzerland: List of countries and areas with an increased risk of infection. This list is updated regularly and on short notice. The next up-date will be valid as from 14th September 2020.  The list now includes a number of French regions, however, the region of Auvergne - Rhone-Alpes (which includes the departments of Ain and Haute Savoie) is not on the list and colleagues living in this area can therefore come to CERN.

France: Complete list of high risk countries and areas for COVID-19 infection (click on 'Get the data' under the chart to download the list.) The list has been last updated on 8th of August 2020. Switzerland is not on the French list. 

Employed members of personnel and associated members of personnel for training purposes arriving from an at-risk country or area will be required to quarantine for 14 days. More information on CERN’s instructions for travel to and from high risk countries for COVID-19 infections can be found here.

  • Telework arrangements for the return to onsite work (for CERN personnel only)

As of 7 September, several categories of Members of Personnel who have been mainly or completely on telework since March should be present on the CERN site at least 50% of their working time. The exact fraction of presence on site is to be determined with the supervisor based on the needs of the Organization. More information here.

  • The age at which access to the CERN site by members of personnel requires authorisation has been raised from 65 to 70. (More here) *Latest update 15-9-20*