Since 2016, the biennial "Early Childhood Workforce Index" has tracked the status of Early childhood educators (ECE) workforce policies in order to identify promising practices for improving early educator jobs and changes over time. This fourth edition includes new analyses as well as updated policy recommendations. Highlights include: (1) A data snapshot of the national early care and education workforce; (2) 50-state data on early childhood educator wages and poverty rates, using a new methodology that includes self-employed early childhood educators like family child care providers; (3) State-level data on early childhood educator households' use of public safety net programs; (4) Detailed tables on state workforce policies and initiatives, especially for Qualifications and Educational Supports, Compensation and Financial Relief, and Workforce Data; (5) New data on the use of ARPA and other COVID-19 relief funding for the ECE workforce; and (6) A new Tribal profile in addition to a profile of the U.S. territories and individual profiles of every state and the District of Columbia.