| Cascades Holding US WARN | July 8, 2025 | 103 | — | Niagara Falls, NY | — |
| Nuttall Gear WARN | May 8, 2025 | 60 | — | Niagara Falls, NY | — |
| Rite Aid WARN | May 5, 2025 | 16 | — | Niagara Falls, NY | — |
| Rite Aid WARN | May 5, 2025 | 10 | — | Niagara Falls, NY | — |
| Rite Aid WARN | May 5, 2025 | 8 | — | Niagara Falls, NY | — |
| Rite Aid WARN | May 5, 2025 | 11 | — | Niagara Falls, NY | — |
| Venture Forthe WARN | December 31, 2024 | 133 | — | Niagara Falls, NY | — |
| Savarino WARN | August 16, 2023 | 1 | — | Niagara Falls, NY | — |
| Occidental Chemical WARN | August 19, 2021 | 128 | — | Niagara Falls, NY | — |
| Community Development Institute Head Start WARN | August 4, 2021 | 75 | — | Niagara Falls, NY | — |
| Hard Rock Café International WARN | April 21, 2020 | 58 | — | Niagara Falls, NY | — |
| Venture Forthe WARN | April 9, 2020 | 6 | — | Niagara Falls, NY | — |
| Guess? WARN | April 6, 2020 | — | — | Niagara Falls, NY | — |
| The Goodyear Tire & Rubber WARN | March 31, 2020 | 41 | — | Niagara Falls, NY | — |
| Globe Metallurgical WARN | December 27, 2018 | 97 | — | Niagara Falls, NY | — |
| Kmart Corporation Store #04123 WARN | October 15, 2018 | 58 | — | Niagara Falls, NY | — |
| Sears Full Line Store WARN | May 3, 2018 | 42 | — | Niagara Falls, NY | — |
| People WARN | March 29, 2018 | 9 | — | Niagara Falls, NY | — |
| The Chemours WARN | July 25, 2016 | 145 | — | Niagara Falls, NY | — |
| NAES WARN | February 12, 2013 | 30 | — | Niagara Falls, NY | — |
| Prestige Maintenance USA Target Department Store #1012 WARN | July 25, 2011 | 3 | — | Niagara Falls, NY | — |
| Flextronics Americas WARN | June 1, 2011 | 7 | — | Niagara Falls, NY | — |
| Saint Gobain Structural Ceramics Facility WARN | January 14, 2011 | 32 | — | Niagara Falls, NY | — |
| The Niagara SDC operated by TeleTech WARN | December 15, 2009 | 417 | — | Niagara Falls, NY | — |
| TeleTech SDC WARN | January 2, 2009 | 13 | — | Niagara Falls, NY | — |
| Sherwood Valve WARN | August 12, 2008 | 147 | — | Niagara Falls, NY | — |
| TeleTech Niagara Falls SDC WARN | May 15, 2008 | 187 | — | Niagara Falls, NY | — |
| TeleTech Niagara Falls SDC WARN | February 26, 2008 | 340 | — | Niagara Falls, NY | — |
| Ferro Electronic Material Systems WARN | March 19, 2007 | 140 | — | Niagara Falls, NY | — |