| 01-CB-10811-001 | American Postal Workers Union, Local 497, AFL-CIO (Alan Ritchey Inc.) | Union Security Related (including Beck) |
| 01-CB-10892-001 | American Postal Workers Union, Northeast Massachusetts Area Local (United States Postal Service) | Union Security Related (including Beck) |
| 04-CB-09102-001 | American Postal Workers Union, Local 2233 (U. S. Postal Service (Downingtown)) | Union Security Related (including Beck) |
| 05-CB-09686-001 | American Postal Workers Union, Local 6803 (U.S. Postal Service) | Union Security Related (including Beck) |
| 07-CB-14628-001 | American Postal Workers Union, AFL-CIO (RCI) | Union Security Related (including Beck) |
| 09-CB-10114-001 | AMERICAN POSTAL WORKERS UNION, LOCAL 4, AFL-CIO (United States Postal Service) | Union Security Related (including Beck) |
| 09-CB-10114-002 | AMERICAN POSTAL WORKERS INTERNATIONAL UNION, AFL-CIO (United States Postal Service) | Union Security Related (including Beck) |
| 09-CB-10500-001 | AMERICAN POSTAL WORKERS UNION, KENTUCKY AREA LOCAL #4 (United States Postal Service) | Union Security Related (including Beck) |
| 11-CB-03417-001 | National Postal Mailhandlers Union, Local 305 (USPS - Raleligh PNDC) | Union Security Related (including Beck) |
| 11-CB-03464-001 | American Postal Workers Union Local 482. AFL-CIO and the APWU NBA Clerk Division, Washington, DC Region (United States Postal Service) | Union Security Related (including Beck) |
| 11-CB-03466-001 | American Postal Workers Union Local 482, AFL-CIO (United States Postal Service) | Union Security Related (including Beck) |
| 11-CB-03532-001 | American Postal Workers Union, Local 8001 (Mail Contractors of America) | Union Security Related (including Beck) |
| 13-CB-17315-001 | American Postal Workers Union (United States Postal Service) | Union Security Related (including Beck) |
| 13-CB-18929-001 | Aamerican Postal Workers Uion, AFL-CIO Chicago Local (United States Postal Service) | Union Security Related (including Beck) |
| 16-CB-03151-001 | American Postal Workers Union, and all its area Local (United States Postal Service) | Union Security Related (including Beck) |
| 18-CB-04028-001 | APWU (U. S. Postal Service - Minneapolis) | Union Security Related (including Beck) |
| 22-CB-09158-001 | American Postal Workers Union, Red Bank Local 986 (US Postal Service, (Monmouth Processing and Distribution Center)) | Union Security Related (including Beck) |
| 22-CB-09964-001 | American Postal Workers Union (United States Postal Service) | Union Security Related (including Beck) |
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