Official filing · original source linked

Amgen WARN notice — CA, 2023-01-24

Name: Amgen WARN notice
Creator: California Employment Development Department

Amgen reported 305 workers affected in Ventura. Notice date: Jan 24, 2023; planned effective date: Mar 31, 2023.

Raw employer name: Amgen
Canonical company: Amgen →
Workers affected: 305
Event type: layoff
Filing status: filed
Notice / received date: Jan 24, 2023
Effective date: Mar 31, 2023
City: Unavailable
County: Ventura →
State: California →
ZIP: 91320
Reported location: Ventura
Published address: 1 Amgen Center Dr Thousand Oaks CA 91320
Source classification: Layoff Permanent
Source agency: California Employment Development Department

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Original source & provenance

Open supplied source ↗

Agency source
California Employment Development Department

Source ID / record ID
ca-edd / amgen|1-amgen-center-drive-thousand-oaks-ca-91320|2023-01-24

First ingested
Oct 6, 2026 · 16:18 UTC

Last observed
Oct 7, 2026 · 21:57 UTC

Snapshot SHA-256
4433c0edbae8bdabf9124035269e34959bbf61d168c248a71014d05205ce379b

View original source row

{
  "cells": {
    "notice_date": "01/24/2023",
    "received_date": "02/01/2023",
    "effective_date": "03/31/2023",
    "company": "Amgen",
    "reported_location": "Ventura County",
    "workers": "305",
    "type": "Layoff Permanent",
    "address": "1 Amgen Center Drive Thousand Oaks CA 91320"
  },
  "noticeDateField": "Notice Date",
  "archive": "https://edd.ca.gov/siteassets/files/jobs_and_training/warn/warn-report-for-7-1-2022-to-06-30-2023.pdf",
  "page": 24
}

A source-linked public record. Secondary records are attributed to their provider and are not independently verified. For direct records, “Verified” means sourced from an official agency; it does not confirm the layoffs took place.

Related company filings

Company / location	Workers	Effective date	Notice date	Type / source
AmgenSuite 600 San Carlos, CA	4	Sep 1, 2023	Jun 13, 2023	closureSource ↗
AmgenVentura, CA	425	May 26, 2023	Mar 16, 2023	layoffSource ↗
AmgenAlameda, CA	2	Dec 2, 2022	Jun 15, 2022	closureSource ↗
AmgenNewbury Park, CA	61	Jul 9, 2021	May 5, 2021	layoffSource ↗
AmgenNewbury Park, CA	531	Apr 2, 2021	Jan 28, 2021	layoffSource ↗

Dates and counts are the supplied source’s reported values. Secondary-provider locations are unstructured; they are not confirmed worksite addresses. Check the original document for phased dates, updates and exceptions.

Amgen WARN notice — CA, 2023-01-24

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