Exclusion from work, paid time off and rigorous testing requirements. These issues and more came to a head for California employers on November 30, 2020, after the California Office of Administrative Law adopted the California Department of Industrial Relations’ Division of Occupational Safety and Health’s (Cal/OSHA) emergency temporary standards. While many California employers have already implemented COVID-19 plans fulfilling previous requirements for reopening under state and local government orders, the new Cal/OSHA standards vary significantly from what businesses have likely executed to date. We examine the highlights as well as which internal policies and processes affected employers should revisit.