| Company | State | Location | Workers | Notice date |
| Dominick's | IL | Cook County, Multiple Cook County sites | 3,244 | 2013-10-28 |
| Atlantaic Club Casino | NJ | Atlantic City | 1,729 | 2013-01-01 |
| Lilly | IN | Indianapolis | 1,624 | 2013-04-26 |
| Hostess Brands | IL | Oswego, 126 Kirkland Circle, Unit A | 1,390 | 2013-02-19 |
| AstraZeneca | DE | — | 1,200 | 2013-05-31 |
| Pilgrim's Pride | AL | Boaz | 1,154 | 2013-11-26 |
| International Paper-Courtland Mill | AL | Courtland | 1,100 | 2013-09-11 |
| Vanderbilt University | TN | Nashville, Davidson County | 1,033 | 2013-10-08 |
| Dominick's | IL | DuPage County, Multiple DuPage County sites | 970 | 2013-10-28 |
| Boeing | WA | Puget Sound | 939 | 2013-04-08 |
| AEG Facilities | OR | Los Angeles, CA | 900 | 2013-04-29 |
| Journal Register | MI | Statewide | 844 | 2013-02-19 |
| Wells Fargo | AL | Homewood | 841 | 2013-08-23 |
| Indiana University Health | IN | Statewide | 819 | 2013-09-30 |
| Applebee's | IL | Cook County, multiple Cook County locations | 778 | 2013-04-23 |
| Cardinal Health | IL | Waukegan, 1300 Waukegan Road Monte Briner Bldg. | 776 | 2013-01-30 |
| Dominick's | IL | Lake County, Multiple Lake County sites | 704 | 2013-10-28 |
| Century Aluminum of Kentucky GP "Hawesville Smelter | KY | Hancock | 693 | 2013-04-16 |
| Century Aluminum of Kentucky GP "Hawesville Smelter | KY | Hancock | 686 | 2013-10-21 |
| Century Aluminum of Kentucky GP "Hawesville Smelter | KY | Hancock | 679 | 2013-08-16 |
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