| Serta Simmons Bedding WARN | September 3, 2025 | 83 | — | Jamestown, NY | — |
| Rite Aid WARN | May 5, 2025 | 17 | — | Jamestown, NY | — |
| Rite Aid WARN | May 5, 2025 | 9 | — | Jamestown, NY | — |
| Cygnus Home Service, LLC d/b/a Yelloh WARN | May 28, 2024 | 9 | — | Jamestown, NY | — |
| Lutheran Social Services of Upstate New York WARN | November 15, 2023 | 106 | — | Jamestown, NY | — |
| Jamestown Metal Products LLC, a division of Institutional Casework WARN | May 27, 2020 | 80 | — | Jamestown, NY | — |
| Venture Forthe WARN | April 8, 2020 | 3 | — | Jamestown, NY | — |
| Jamestown Metal Products LLC, a division of Institutional Casework WARN | February 5, 2020 | — | — | Jamestown, NY | — |
| Learning Center WARN | November 15, 2019 | 38 | — | Jamestown, NY | — |
| Residential Treatment Center WARN | November 15, 2019 | 54 | — | Jamestown, NY | — |
| Residential Treatment Center and Learning Center, Lutheran Social WARN | November 15, 2019 | 4 | — | Jamestown, NY | — |
| Transform KM WARN | August 6, 2019 | 35 | — | Jamestown, NY | — |
| Heidenhain WARN | April 12, 2018 | 39 | — | Jamestown, NY | — |
| Sam's Club WARN | January 11, 2018 | 114 | — | Jamestown, NY | — |
| MD Electronics WARN | September 25, 2017 | 87 | — | Jamestown, NY | — |
| Crawford Furniture Manufacturing WARN | November 14, 2011 | 84 | — | Jamestown, NY | — |
| Flextronics Americas WARN | June 1, 2011 | 5 | — | Jamestown, NY | — |
| Hear WARN | May 20, 2011 | 2 | — | Jamestown, NY | — |
| The Penn Traffic Company/Quality Markets WARN | December 5, 2008 | 62 | — | Jamestown, NY | — |
| Quality Jamestown Warehouse, a division of Penn Traffic WARN | February 1, 2007 | 58 | — | Jamestown, NY | — |