US WARN layoff notices › Employers › Johns Manville
Official state WARN filings by Johns Manville since 2024, 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 |
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.