Brotherhood of Locomotive Engineers (BLE)

 Brotherhood of Maintenance of Way Employes (BMWE)

 Brotherhood of Railroad Signalmen (BRS)

 International Association of Machinists and Aerospace Workers (IAMAW)

 National Automobile, Aerospace, Transportation and General Workers Union of Canada, (CAW-Canada)

• CAW Local 100 - Rail Division

 Sheet Metal Workers International Association (SMWIA)

 Transportation Communications International Union (TCU)

• TCU Arlington Heights, IL, Allied Services Division
   
• TCU Birmingham, AL Lodge 6060
   
• TCU Fort Wayne, IN, Lodge 6760

 United Transportation Union (UTU)

• UTU Illinois State Legislative Board