An Act relative to Parkinson's disease disability and death in firefighters

This bill creates a presumption that Parkinson's disease causing disability or death in certain firefighters was incurred "in the line of duty," simplifying eligibility for retirement benefits. It directly affects uniformed firefighters in paid departments, state police in fire investigation/K9 units, and airport crash crew personnel (e.g., at Logan Airport, 104th Fighter Wing, or Joint Base Cape Cod) who served at least five years and regularly responded to fire calls. The presumption applies unless non-service factors (like personal health risks) are proven to have caused the condition. The bill amends retirement laws to include this provision, ensuring affected personnel can access benefits under existing systems without needing to prove service connection.