On January 6, 2011, American Airlines informed the TWU that over 200 letters will be sent to employees who enrolled dependents in the medical plans during open enrollment but have not substantiated eligibility. The number of dependents who have not been substantiated is slightly larger this year than in the past. The letter states that the coverage for their dependents is being canceled as a result of the failure to substantiate. There is an appeal process for those who believe their dependents have been removed in error.