Every enterprise should establish policies and procedures that ensure the safety of those present in an enterprise facility during an emergency requiring shelter in place measures.

From the policy:

Summary
The overall safety of employees, customers, and vendors at an enterprise’s facilities should always be of paramount importance. All enterprises should establish policies and procedures to ensure the safety of everyone present in an enterprise facility during an emergency. These policies and procedures are particularly vital in situations where local authorities have issued a shelter-in-place order.

This sample policy provides the basic outline of what procedures an enterprise should take to protect and maintain the safety of all employees, customers, vendors, and visitors who are inside the enterprise’s buildings, plants, warehouses, or other facilities.

Objective
In rare, but not unprecedented circumstances, local law enforcement or other official local authorities will issue a shelter-in-place order. Typically, such an order applies to a small geographical area that may include one or more enterprise facilities. Shelter-in-place orders usually last for a duration of a few hours. The policies and procedures outlined here will certify compliance with the intent of the shelter-in-place order and help ensure the safety of every person located in the affected facility when such an order is given.

Definition of shelter in place
According to the Occupational Safety and Health Administration (OSHA), a shelter-in-place order means selecting an interior room or rooms within your facility, or ones with no or few windows, and taking refuge there.

Compliance
The company will comply with all applicable federal, state, and local laws and regulations regarding official shelter-in-place orders and enforce this policy in accordance with those laws and regulations.