Senneca Holdings/Simplex Isolation Systems
Fontana, California
23 workers · Closure · filed May 6, 2021
A WARN notice is filed with the state before a plant closing or a mass layoff, under the federal WARN Act or a state law like it. Workers is the number the employer said would be affected; plans can change after filing. Data sources
- Workers
- 23 workers
- Kind
- Closure
- Notice date
- May 6, 2021
- Effective date
- Dec 31, 2021
- Location
- Fontana
- State
- California
- Notice
- ca-099f9455945cade2
As published
- notice_date
- 05/06/2021
- effective_date
- 12/31/2021
- received_date
- 05/06/2021
- company
- Senneca Holdings/Simplex Isolation Systems
- city
- Fontana
- num_employees
- 23
- layoff_or_closure
- Closure Permanent
- county
- San Bernardino County
From the California Employment Development Department's WARN list, row 9,289, read Oct 3, 2026; first seen here Oct 3, 2026. Read with Big Local News's warn-scraper and warn-transformer.