| Company | State | Location | Workers | Notice date |
| TriWest Healthcare Alliance | AZ | — | 904 | 2012-12-10 |
| Cequent Performance Products | IN | Goshen | 434 | 2012-12-20 |
| Cementation | AZ | Superior | 400 | 2012-12-10 |
| Johnson Controls Interior Mfg., US | KY | — | 392 | 2012-12-07 |
| CH2M Hill | AK | North Slope | 380 | 2012-12-20 |
| Arch Coal, Inc. Knott County and Raven Complexes | KY | — | 259 | 2012-12-26 |
| Hostess Brands | TN | Memphis, Shelby County | 204 | 2012-12-06 |
| Umatilla Chemical Agent Disposal Facili | OR | Hermiston | 178 | 2012-12-11 |
| Steel Parts Manufacturing | IN | Tipton | 173 | 2012-12-27 |
| TriWest Healthcare Alliance | WA | Pierce County | 127 | 2012-12-18 |
| Sodexo | AL | Tuskegee | 124 | 2012-12-14 |
| Arbor E&T | IN | Indianapolis | 117 | 2012-12-06 |
| Life Care Center of West Seattle | WA | Seattle | 99 | 2012-12-20 |
| Genuardi's | NJ | Marlton | 98 | 2012-12-01 |
| Horizon Blue Cross Blue Shield of New Jersey | NJ | Newark | 96 | 2012-12-01 |