From the Background: " States have begun to ease coronavirus disease (COVID-19) pandemic restrictions on non-essential businesses, such as restaurants and commercial establishments. To ensure employee and community safety, employers who have decided to reopen are implementing a variety of social distancing, hygiene, and infection control measures, such as operating at reduced capacity and regularly sanitizing surfaces.  This document discusses the strategies, supported by guidance from federal, state, and local governments, that businesses across various sectors can implement to protect employees and customers from COVID-19 as businesses begin phased reopening.  [Included] is a list of key findings and considerations for jurisdictions and communities regarding ongoing COVID-19 operations across the country. These are best practices for consideration and do not constitute and should not be considered as guidance in any way."
Federal Emergency Management Agency: https://www.fema.gov/