Union contacts at Karlsborg
| Organization | Name | Contact details |
| Pappers Avd 165 | Nicklas Johanson |
niklas.ol.johansson@billerud.com Tel:+46 923 66 237 Cell: +46 70 584 09 83 |
| Unionen | Joakim Paavola |
Tel:+46 923 66380 Cell: +46 70 395 32 55 |
| Sveriges ingenjörer | Mattias Arvidsson |
mattias.arvidsson@billerud.com Tel:+46 923 66229 Cell: +46 72 216 61 53 |
| Ledarna | Tomas Svensson |
Tel:+46 923 66121 Cell: +46 70 230 31 48 |