California could be the first state that would allow adults to add their parents to their health care plans.
The proposal in the state Legislature says to be eligible, parents would have to meet the IRS's definition of a dependent, meaning they rely on their children for at least 50% of their support.
Doing so could potentially save families money by limiting their expenses to one shared out-of-pocket maximum limit.
But business leaders say adding lots of older people to group insurance plans will only drive up their already high premium costs.