US WARN layoff notices › Employers › J › Johns Manville
Official state WARN filings by Johns Manville since 1988, normalized from state labor department sources. Latest notice: 2026-02-10.
| Notice date | State | Location | Employees | Effective date | Type |
|---|---|---|---|---|---|
| 2026-02-10 | California | Glenn County | 90 | 2026-04-19 | Closure Temporary |
| 2024-09-03 | California | Glenn County | 100 | 2024-11-03 | Layoff Temporary |
| 2023-09-11 | California | Glenn County | 54 | 2023-09-25 | Closure Temporary |
| 2021-09-07 | California | Glenn County | 260 | 2021-11-07 | Closure Temporary |
| 2020-05-22 | Tennessee | McMinn | 25 | 2020-05-21 | — |
| 2020-04-20 | California | Willows, Glenn County | 13 | 2020-06-01 | Layoff Temporary |
| 2015-01-23 | California | Willows | 40 | 2015-03-16 | Layoff Temporary |
| 2008-11-01 | New Jersey | BERLIN | 170 | 2009-01-31 | — |
| 2006-12-06 | Alabama | Phenix City | 150 | 2006-12-31 | Closing * |
| 2000-05-02 | Kentucky | Boone | 70 | — | — |
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.
