Millennials just getting used to "adulting" may have a new responsibility to worry about: providing financial support to a parent.
Most of the time it's cash flowing in the opposite direction. A little more than a third of adults ages 21 to 45 get financial support from a parent, with help most often received on cellphone service, food, utilities and insurance, according to a recent survey from financial planning group Society for Grownups.
A Pew study released this spring found that for the first time in more than 130 years, adults age 18 to 34 are more likely to be living in their parents' home than with a spouse or partner in their own household.
But some young workers are taking on sandwich generation responsibilities early. It's a trend that's only starting to gather steam, said Catherine Collinson, president of the Transamerica Center for Retirement Studies.