A CWCI Research Update report uses OSPHD data to track changes in the volume and types of inpatient hospitalizations in California workers compensation from 2010 through 2020 and compare workers compensation inpatient hospitalization trends to those in Medicare, Medi-Cal and private coverage. While updating the long-term inpatient hospitalization trends, the report also provides a focused look at the changes in inpatient hospitalizations between 2019 and 2020, highlighting the impact of COVID-19 on California workers compensation inpatient care, identifying changes in the types of conditions treated and the services delivered to injured workers during the first year of the pandemic.