Administration officials said they believed that 98 percent of beneficiaries would sign up for such coverage.
And the industry's potential market has barely been scratched, with only 8 percent of the country's doctors signed up.
Under this part of the agreement, the employees at a work location would join the union if 55 percent signed up through the cards.
As of August 2009, only 15 percent of 160,000 eligible patients had signed up.
Of the 5.2 million sports subscribers, 97 percent signed up for both channels.
And 85 percent of that group had signed up for it.
So far, about 370 employees, or 18 percent of the work force, have signed up for trip-reduction programs.
But after setting up one, the company quickly saw 20 percent of its customers sign up.
Cox Communications has offered phone service since 1997, and 14 percent of its cable subscribers have signed up.
Under the card check agreement, employees at a work site would join the union if 55 percent signed up through the cards.