Client Alert: California Quickly Adopts DHS Guidance on the Essential Critical Infrastructure Workforce, While New York and Pennsylvania Promulgate Their Own Lists of Essential Businesses

With various US jurisdictions taking disparate approaches to containing the COVID-19 pandemic, businesses are being forced to navigate a patchwork of orders and declarations dictating which operations are “essential”—and therefore exempt from any closure orders—and which are not.  

While federalism concerns prevent the imposition of a nationwide directive limiting the operation of businesses within individual states’ borders, the US Department of Homeland Security (DHS) had attempted to create some consistency through the publication on March 19 of its Guidance on the Essential Critical Infrastructure Workforce (the DHS Guidance).  Though expressly advisory in nature, the Guidance contains a list of “crucial infrastructure sectors and the essential workers needed to maintain the services and functions Americans depend on daily and that need to be able to operate resiliently during the COVID-19 pandemic response.”  And in fact, within hours of its official publication, Governor Newsom of California adopted the DHS Guidance as the basis for Executive Order N-33-20, which directs all individuals in California to stay home except as needed to maintain continuity of operations in connection with the sector identified in the DHS Guidance.

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© 2026 Jenner & Block LLP. Attorney Advertising. Jenner & Block LLP is an Illinois Limited Liability Partnership including professional corporations. This publication, presentation, or event is not intended to provide legal advice but to provide information on legal matters and/or firm news of interest to our clients and colleagues. Readers or attendees should seek specific legal advice before taking any action with respect to matters mentioned in this publication or at this event. The attorney responsible for this communication is Brent E. Kidwell, Jenner & Block LLP, 353 N. Clark Street, Chicago, IL 60654-3456. Prior results do not guarantee a similar outcome. Jenner & Block London LLP, an affiliate of Jenner & Block LLP, is a limited liability partnership established under the laws of the State of Delaware, USA and is authorised and regulated by the Solicitors Regulation Authority with SRA number 615729. Information regarding the data we collect and the rights you have over your data can be found in our Privacy Notice. For further inquiries, please contact dataprotection@jenner.com.

Client Alert: California Quickly Adopts DHS Guidance on the Essential Critical Infrastructure Workforce, While New York and Pennsylvania Promulgate Their Own Lists of Essential Businesses

With various US jurisdictions taking disparate approaches to containing the COVID-19 pandemic, businesses are being forced to navigate a patchwork of orders and declarations dictating which operations are “essential”—and therefore exempt from any closure orders—and which are not.  

While federalism concerns prevent the imposition of a nationwide directive limiting the operation of businesses within individual states’ borders, the US Department of Homeland Security (DHS) had attempted to create some consistency through the publication on March 19 of its Guidance on the Essential Critical Infrastructure Workforce (the DHS Guidance).  Though expressly advisory in nature, the Guidance contains a list of “crucial infrastructure sectors and the essential workers needed to maintain the services and functions Americans depend on daily and that need to be able to operate resiliently during the COVID-19 pandemic response.”  And in fact, within hours of its official publication, Governor Newsom of California adopted the DHS Guidance as the basis for Executive Order N-33-20, which directs all individuals in California to stay home except as needed to maintain continuity of operations in connection with the sector identified in the DHS Guidance.

To read the full article, please click here.

Related Capabilities

Related Locations

© 2026 Jenner & Block LLP. Attorney Advertising. Jenner & Block LLP is an Illinois Limited Liability Partnership including professional corporations. This publication, presentation, or event is not intended to provide legal advice but to provide information on legal matters and/or firm news of interest to our clients and colleagues. Readers or attendees should seek specific legal advice before taking any action with respect to matters mentioned in this publication or at this event. The attorney responsible for this communication is Brent E. Kidwell, Jenner & Block LLP, 353 N. Clark Street, Chicago, IL 60654-3456. Prior results do not guarantee a similar outcome. Jenner & Block London LLP, an affiliate of Jenner & Block LLP, is a limited liability partnership established under the laws of the State of Delaware, USA and is authorised and regulated by the Solicitors Regulation Authority with SRA number 615729. Information regarding the data we collect and the rights you have over your data can be found in our Privacy Notice. For further inquiries, please contact dataprotection@jenner.com.

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