House Bill 25-1300, the Workers’ Compensation Benefits Proof of Entitlement bill, was signed into law by Governor Polis on June 4, 2025. Effective January 1, 2028, the Bill makes significant changes to Colorado’s Workers’ Compensation Act, including shifting how authorized treating physicians (ATPs) are selected, extending timelines for physician changes, and requiring use of Division of Workers’ Compensation (DOWC) utilization standards.

Read our latest Blog Post for a detailed overview of HB 25-1300, the Governor’s implementation directives, and what these changes mean for CIRSA members.