Two groups representing 19,000 physicians have sued Blue Cross Blue Shield of Michigan.
They accuse the insurer of unfairly and unilaterally imposing lower fees and trying to change the terms of their contracts to treat auto workers and their families.
Under agreements between the United Auto Workers and the Big Three automakers, employees pay entirely for office visits but at a reduced rate.
Doctors say they never agreed to the lower fees.
Viewers with disabilities can get assistance accessing this station's FCC Public Inspection File by contacting the station with the information listed below. Questions or concerns relating to the accessibility of the FCC's online public file system should be directed to the FCC at 888-225-5322, 888-835-5322 (TTY), or firstname.lastname@example.org.