Health savings account programs seem to be most popular with workers at small employers and with lower-income workers.
Researchers at UnitedHealthcare, a unit of UnitedHealth Group Inc., Minnetonka, Minn., have based those figures on an analysis of information on about 200,000 of the 1.4 million plan members in HSA-eligible plans in 2006, the latest year for which full-year figures were available when the analysis was conducted.
Participation rates were highest at small businesses and the lowest-income groups, the researchers report.