Proterra Operating Company, Inc. layoff notices at a glance
Proterra Operating Company, Inc. has filed 2 WARN notices with the California Employment Development Department between Jan 19, 2023 and Jun 27, 2023, naming 135 workers. All were layoffs rather than closures; 2 permanent, 0 temporary. The largest single notice named 87 workers in Los Angeles County on Jan 19, 2023. Its latest notice, 48 workers in San Mateo County dated Jun 27, 2023, was 1% of the 4,631 workers named in all 69 San Mateo County notices of fiscal year 2023-2024. 1 of the notices show fewer than 60 days between the notice date and the effective date (see how to read this).
Every notice, newest first
| Notice date | Effective | County | City | Workers | Type | Days notice |
|---|---|---|---|---|---|---|
| Jun 27, 2023 | Jul 28, 2023 | San Mateo | Burlingame | 48 | Layoff, permanent | 31 under 60 |
| Jan 19, 2023 | Mar 31, 2023 | Los Angeles | Walnut | 87 | Layoff, permanent | 71 |
Sites named on the notices
- 1815 Rollins Road Burlingame CA 94010 (Jun 27, 2023, 48 workers)
- 383 Cheryl Lane Walnut CA 91789 (Jan 19, 2023, 87 workers)
Where the notices landed
- Los Angeles County1 notice, 87 workers
- San Mateo County1 notice, 48 workers
- Walnut1 notice, 87 workers
- Burlingame1 notice, 48 workers
Local pages: Los Angeles 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.
For Proterra Operating Company, Inc. the shortest gap shown is 31 days. That is a reason to check whether an exception in 1401(c) or 1402.5 applied, whether the workers received the letter earlier than the EDD did, and whether anyone was let go before the effective date. It is not, by itself, a finding against the employer.
Full statute walk-through: the California 60-day rule, section by section.
If you work, or worked, at Proterra Operating Company, Inc.
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 2022-2023 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.