Great Moments In Public Sector Compensation
I can't confirm this by Randal O'Toole is usually pretty much on top of Portland transit issues:
Portland’s TriMet agreed to allow transit workers to retire at age 55 after as little as ten years on the job and gave them and their families free medical care (with a $5 co-pay, no deductible) for life (plus 16 years after the retiree’s death for their families). As a result, health-care costs have grown from $18 million in 2000 to $68 million next year and projected to rise to $153 million–40 percent of the agency’s 2010 operating budget–by 2020.