SLAC response to COVID-19

(April 27, 2020) The Bay Area counties have announced another extension to the shelter-in-place order through the end of May. For more information, see the San Mateo County FAQs.


(March 31, 2020) The Bay Area counties have announced an extension to the shelter-in-place order, which will now run through at least Sunday, May 3. For more information, see the San Mateo County FAQs.

SLAC will continue to limit on-site activities to those identified as essential in supporting the DOE mission, including COVID-19-related research, site security, facility maintenance, custodial services, essential computing maintenance, and shipping & receiving.


(March 16, 2020 - 4:40 pm) In compliance with today’s Public Health Order directing all residents of six Bay Area counties to shelter in place, the lab is ceasing all on-site functions except those deemed government-essential. All employees who can work from home will continue to telecommute. The order begins at 12:01 a.m. Tuesday, March 17, and will stay in place until at least Tuesday, April 7, 2020.

Government-essential functions include the following activities in limited form:

  • Site security
  • Facility inspections and maintenance
  • Computing support to maintain telecommuting capabilities
  • COVID-19 research
  • Custodial

Only specific individuals who have been notified after 1 p.m. that they are supporting one of the above activities are authorized to be on-site. Please direct any site access questions you might have to your manager.


(March 16, 2020 - 1:50 pm)  Six Bay Area counties have just announced a shelter-in-place order for all residents beginning at 12:01 a.m., March 17, and lasting until at least April 7. The counties affected are Alameda, Contra Costa, Marin, San Francisco, San Mateo, and Santa Clara.

The shelter-in-place order allows for people to leave their homes for necessary supplies, accessing health care, providing aid to family and friends who need assistance, for exercise with appropriate social distancing, and for returning to homes outside the Bay Area. For more information about the shelter-in-place order, please see this San Francisco Chronicle article.

Lab leadership and the Emergency Operations Center (EOC) are working to understand the implications for SLAC and develop guidance. Please watch your email; more information will be provided as soon as possible this afternoon.


(March 14, 2020) Due to the broadening impacts of COVID-19 in the Bay Area, SLAC is curtailing on-site operations starting Tuesday, March 17, through at least Sunday, April 5. During this time, the lab will continue to operate, with increased numbers of employees working remotely. On-site activities will be limited to supporting specific programs and operations.

As a precaution, SLAC has also suspended all non-essential business travel and visits to the lab until further notice.
More information for

See the COVID-19 information page for details on impacts at SLAC.



SLAC Information Hotline (recorded SLAC status information): 1-877-447-7522 (toll free)

In the event of an emergency, this page and the SLAC Information Hotline will be updated, and affected parties will be directed here.

What to do in an emergency?

  • Safety first! Your safety is the most important thing.
  • Call 911.
  • After calling 911, call SLAC Security x5555, then notify your supervisor.

Emergency resources