On May 20, 2020, worker advocates submitted a petition for an emergency COVID-19 safety standard demanding additional COVID-19 regulations for those employees not covered by the Aerosol Transmissible Diseases (ATD) standard . The ATD standard was codified in 2009 “to protect employees who are at increased risk of contracting certain airborne infections due to their work activities.” The petition included specific requests to adopt standards related to social distancing, ventilation systems, personal hygiene, personal protective equipment (PPE), employee training, and recordkeeping.