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Corteva Agriscience — WARN Act layoff notices

Official state WARN filings by Corteva Agriscience since 1988, normalized from state labor department sources. Latest notice: 2026-08-18.

21notices
188workers affected
2states
Notice dateStateLocationEmployeesEffective dateType
2026-08-18CaliforniaContra Costa County22026-10-30Layoff Permanent
2026-06-23CaliforniaContra Costa County12026-08-28Layoff Permanent
2026-04-21CaliforniaContra Costa County22026-07-03Layoff Permanent
2026-03-17CaliforniaContra Costa County32026-06-05Layoff Permanent
2026-02-18CaliforniaContra Costa County32026-04-24Closure Permanent
2026-01-23CaliforniaContra Costa County12026-02-27Layoff Permanent
2025-11-18CaliforniaContra Costa County42026-02-27Layoff Permanent
2025-10-21CaliforniaContra Costa County32026-01-02Layoff Permanent
2025-08-19CaliforniaContra Costa County102025-10-24Layoff Permanent
2025-07-15CaliforniaContra Costa County42025-09-26Layoff Permanent
2025-06-11CaliforniaContra Costa County112025-08-01Layoff Permanent
2025-03-14CaliforniaContra Costa County12025-07-04Layoff Permanent
2025-02-25CaliforniaContra Costa County262025-05-30Layoff Permanent
2025-01-29CaliforniaContra Costa County202025-03-28Layoff Permanent
2024-12-11CaliforniaContra Costa County32025-03-28Layoff Permanent
2024-09-26CaliforniaContra Costa County182025-01-03Layoff Permanent
2024-06-25CaliforniaContra Costa County22024-11-08Layoff Permanent
2024-06-25CaliforniaContra Costa County42024-09-27Layoff Permanent
2024-02-05CaliforniaContra Costa County62024-04-26Layoff Permanent
2023-08-23CaliforniaContra Costa County312023-10-27Layoff Permanent
2019-07-18IllinoisLeRoy, 28857 E 200 North Rd. PO Box 100033—State

Source: state WARN Act disclosures, normalized in the free US WARN notices dataset (CSV/JSON, no login, no delay, notices 1988+). WARN notices are advance notifications of plant closings and mass layoffs; actual layoff counts and dates can change after filing.

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