All WARN Act mass layoff and plant closure notices filed by Quest Diagnostics.
| Company | Location | Employees | Notice Date | Type |
|---|---|---|---|---|
| Quest Diagnostics/Pack Health | Birmingham, AL | 98 | 2025-09-29 | |
| Quest Diagnostics/Pack Health | Birmingham, AL | 98 | 2025-09-29 | Closure |
| Quest Diagnostics, Inc | Norristown, PA | 121 | 2024-08-26 | |
| Quest Diagnostics, Inc | Norristown, PA | 121 | 2024-06-01 | Closure |
| Quest Diagnostics | Horsham, PA | 154 | 2021-05-01 | Layoff |
| Quest Diagnostics Inc | Tucker, GA | 71 | 2021-03-13 | |
| Quest Diagnostics Inc | Tucker, GA | 71 | 2021-03-13 | |
| Quest Diagnostics, Inc | Purchase dataset for city details, MD | 0 | 2020-08-07 | |
| Quest Diagnostics, Inc | , MD | 52 | 2020-08-07 | Layoff |
| Quest Diagnostics | Woodland, CA | 3 | 2020-08-05 | Layoff |
| Quest Diagnostics Incorporated | Auburn, CA | 7 | 2020-07-22 | Layoff |
| Quest Diagnostics | , CA | 0 | 2020-04-03 | |
| Quest Diagnostics Incorporated | , CA | 0 | 2020-04-03 | |
| Quest Diagnostics | Purchase dataset for city details, MI | 0 | 2018-05-08 | |
| Quest Diagnostics, Inc | Purchase dataset for city details, MI | 0 | 2018-03-08 | |
| Quest Diagnostics, Inc | Troy, MI | 57 | 2018-03-08 | Closure |
| Quest Diagnostics Inc. (Updated Notice) | Wallingford, CT | 80 | 2015-10-06 | |
| Quest Diagnostics Inc. (Updated Notice) | Wallingford, CT | 80 | 2015-10-06 | Layoff |
| Quest Diagnostics Inc. (Updated Notice) | Not mentioned, CT | 80 | 2015-09-04 | |
| Quest Diagnostics Inc. (Updated Notice) | Not mentioned, CT | 80 | 2015-09-04 | Layoff |
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