This story has been updated to reflect guidance from the California Department of Public Health that went into effect January 6, 2022 that supersedes some of the rules voted on by Cal/OSHA in December 2021.

Today, as COVID-19 case rates in California have jumped to their highest levels yet — more than six times the peak of the delta variant wave — updated workplace rules are kicking in to better help protect workers vaccinated against COVID-19.

The revised rules come from the California Division of Safety and Health — also known as Cal/OSHA — which regulates health and safety in California workplaces.