US WARN layoff notices › Employers › Corteva Agriscience
Official state WARN filings by Corteva Agriscience since 2024, normalized from state labor department sources. Latest notice: 2026-08-18.
| Notice date | State | Location | Employees | Effective date | Type |
|---|---|---|---|---|---|
| 2026-08-18 | California | Contra Costa County | 2 | 2026-10-30 | Layoff Permanent |
| 2026-06-23 | California | Contra Costa County | 1 | 2026-08-28 | Layoff Permanent |
| 2026-04-21 | California | Contra Costa County | 2 | 2026-07-03 | Layoff Permanent |
| 2026-03-17 | California | Contra Costa County | 3 | 2026-06-05 | Layoff Permanent |
| 2026-02-18 | California | Contra Costa County | 3 | 2026-04-24 | Closure Permanent |
| 2026-01-23 | California | Contra Costa County | 1 | 2026-02-27 | Layoff Permanent |
| 2025-11-18 | California | Contra Costa County | 4 | 2026-02-27 | Layoff Permanent |
| 2025-10-21 | California | Contra Costa County | 3 | 2026-01-02 | Layoff Permanent |
| 2025-08-19 | California | Contra Costa County | 10 | 2025-10-24 | Layoff Permanent |
| 2025-07-15 | California | Contra Costa County | 4 | 2025-09-26 | Layoff Permanent |
| 2025-06-11 | California | Contra Costa County | 11 | 2025-08-01 | Layoff Permanent |
| 2025-03-14 | California | Contra Costa County | 1 | 2025-07-04 | Layoff Permanent |
| 2025-02-25 | California | Contra Costa County | 26 | 2025-05-30 | Layoff Permanent |
| 2025-01-29 | California | Contra Costa County | 20 | 2025-03-28 | Layoff Permanent |
| 2024-12-11 | California | Contra Costa County | 3 | 2025-03-28 | Layoff Permanent |
| 2024-09-26 | California | Contra Costa County | 18 | 2025-01-03 | Layoff Permanent |
| 2024-06-25 | California | Contra Costa County | 2 | 2024-11-08 | Layoff Permanent |
| 2024-06-25 | California | Contra Costa County | 4 | 2024-09-27 | Layoff Permanent |
| 2024-02-05 | California | Contra Costa County | 6 | 2024-04-26 | Layoff Permanent |
Source: state WARN Act disclosures, normalized in the free US WARN notices dataset (CSV/JSON, no login, 48h-delayed, notices 2024+). WARN notices are advance notifications of plant closings and mass layoffs; actual layoff counts and dates can change after filing.