Amgen layoff notices at a glance
Amgen has filed 11 WARN notices with the California Employment Development Department between Oct 22, 2014 and Jun 13, 2023, naming 2,995 workers. 2 were closures and 9 were layoffs; 11 permanent, 0 temporary. The largest single notice named 531 workers in Ventura County on Jan 28, 2021. Its latest notice, 4 workers in San Mateo County dated Jun 13, 2023, was 0.1% of the 4,631 workers named in all 69 San Mateo County notices of fiscal year 2023-2024.
Every notice, newest first
| Notice date | Effective | County | City | Workers | Type | Days notice |
|---|---|---|---|---|---|---|
| Jun 13, 2023 | Sep 1, 2023 | San Mateo | San Carlos | 4 | Closure, permanent | 80 |
| Mar 16, 2023 | May 26, 2023 | Ventura | Newbury Park | 425 | Layoff, permanent | 71 |
| Jan 24, 2023 | Mar 31, 2023 | Ventura | Thousand Oaks | 305 | Layoff, permanent | 66 |
| Jun 15, 2022 | Dec 2, 2022 | Alameda | Newark | 2 | Closure, permanent | 170 |
| May 5, 2021 | Jul 9, 2021 | Ventura | Newbury Park | 61 | Layoff, permanent | 65 |
| Jan 28, 2021 | Apr 2, 2021 | Ventura | Newbury Park | 531 | Layoff, permanent | 64 |
| Jan 28, 2021 | Apr 2, 2021 | Ventura | Thousand Oaks | 531 | Layoff, permanent | 64 |
| Oct 29, 2019 | Dec 31, 2019 | Ventura | Thousand Oaks | 172 | Layoff, permanent | 63 |
| Nov 1, 2017 | Dec 31, 2017 | Ventura | Thousand Oaks | 121 | Layoff, permanent | 60 |
| Apr 11, 2017 | Jun 16, 2017 | Ventura | Thousand Oaks | 494 | Layoff, permanent | 66 |
| Oct 22, 2014 | Dec 22, 2014 | Ventura | Newbury Park | 349 | Layoff, permanent | 61 |
Sites named on the notices
- 835 Industrial Road, Suite 600 San Carlos CA 94070 (Jun 13, 2023, 4 workers)
- 1 Amgen Center Drive Newbury Park CA 91320 (Mar 16, 2023, 425 workers)
- 1 Amgen Center Drive Thousand Oaks CA 91320 (Jan 24, 2023, 305 workers)
- 7999 Gateway Blvd #320 Newark CA 94560 (Jun 15, 2022, 2 workers)
Also filed as: Amgen Inc.; Amgen Inc; Amgen, Inc.
Where the notices landed
- Ventura County9 notices, 2,989 workers
- San Mateo County1 notice, 4 workers
- Alameda County1 notice, 2 workers
- Thousand Oaks5 notices, 1,623 workers
- Newbury Park4 notices, 1,366 workers
- San Carlos1 notice, 4 workers
- Newark1 notice, 2 workers
Local pages: Thousand Oaks employment lawyer, Ventura County employment law guide, San Mateo County employment law guide.
How to read this record
Notice date is the date on the employer's letter. Effective is the first day of separations it announced. Days notice is the gap between them; California Labor Code 1401 calls for 60 days from a covered employer, and section 1402 makes a short notice worth a day of pay and benefits for every day it is short, up to 60.
Every notice on file for Amgen shows 60 days or more between the two dates, which is what the statute expects. The questions that remain for a worker are the ones the notice does not answer: whether pay and benefits ran through the effective date, whether final wages arrived on the last day (Labor Code 201 and 203), and who was selected and why.
Full statute walk-through: the California 60-day rule, section by section.
If you work, or worked, at Amgen
Keep the notice, every email about the selection, and your final pay stub. A free review covers four things in one call: whether the notice period was honored and paid, whether final pay and vacation payout arrived on time, whether the selection pattern raises an age, pregnancy or leave, or retaliation question, and what a proposed severance release is actually worth before you sign it. Call (800) 371-3088 or send the notice.
Source: California EDD WARN reports, fiscal years 2014-2015 to 2023-2024. Record last checked against the EDD on Oct 30, 2026. Back to the layoff tracker.
About this data: Notices come from the California Employment Development Department WARN reports (fiscal years 2014-2015 to today) and are reloaded from the EDD every Tuesday and Thursday. Employer names appear as the employer wrote them on the notice, grouped where the names clearly refer to the same company. A notice is not a finding that any law was broken. This page is general information, not legal advice about your situation.