I am a federal employee with 30 years experience. Three younger and new employees transferred from slower & lower pay facility three years ago. After we trained them, they have been given pay raises $20K over us. This happened nationwide because of an agreement between U.S. government and our union. Union President told me it is wrong and they corrected it, but cannot fix the error, because arbitraitor settled dispute. I'm not buying it. Can I sue federal government or union for unfair labor practice or preferrential treatment etc... This mistake effects about 14,000 federal employees.