San Mateo Layoffs
California WARN Act filings
Intelligence shows 3,507 employees affected across 37 companies in the San Mateo market. Visa represents the largest single event with 320 positions eliminated. Additional restructuring confirmed at Oracle America, Inc and Meta Platforms, Inc, with Unknown departments showing elevated exposure. Effective dates range from January 29 through December 21.
What is happening in San Mateo County
San Mateo County has 9 active WARN filings covering 1,411 workers. The largest is Visa, which filed for 320 workers. The next layoff takes effect on 2026-10-01.
Affected workers are spread across 10 cities in the county. The most affected are Redwood City (960 workers), South San Francisco (858 workers), Menlo Park (623 workers).
Professional Scientific and Technical Services accounts for the largest share of affected workers in San Mateo County, 29 percent of the total. Manufacturing is next.
Several employers appear more than once in San Mateo County: Oracle America (3 filings), Genentech (3 filings), LeeMAH Electronics (2 filings). Repeat filings usually mean a phased reduction rather than a single closure.
The largest filings on record in San Mateo County are Visa, 320 workers, effective 2026-10-01; Meta, 304 workers, effective 2025-12-22; Oracle America, 279 workers, effective 2026-11-13.
Upcoming and recent layoffs
Filings with an effective date in the future or within the last 90 days.
24 earlier filings in San Mateo County have already taken effect and are no longer listed above. They are included in the figures above.
Agile Physical Therapy·Alector·Arsenal Biosciences·Astellas Gene Therapies·C3.ai·Canyon Ranch Woodside·Carbon·Chan Zuckerberg Initiative·Cruise·Dairyland Produce·genentech·Informatica·Kaiser Permanente·Meta·Oracle America·Planned Parenthood Mar Monte·Resonetics·San Bruno CityNet Services·Sutro Biopharma·Transdev Services
Job Search Tools
Tools that may help as you start your search.
An AI tool that searches for open positions and applies on your behalf daily across 500,000+ company career pages. Paid plans start at $19/month.
A TopResume expert will review your resume and give you actionable feedback within 48 hours. The review is free.
California's state-run job board. Employers posting here are specifically hiring California workers.
Resume services, training programs, financial assistance, and more.
Know Your Rights
These programs exist for exactly this situation.
Under the California WARN Act, employers with 75 or more employees must provide 60 days advance notice before a mass layoff, relocation, or plant closure. If you were affected by a filing in San Mateo, the following resources can help.
Apply online through the California Employment Development Department. You may be eligible before your last day.
California's food assistance program for individuals and families experiencing income loss.
Losing employer-sponsored health coverage qualifies you for a special enrollment period.
Free career counseling, job search assistance, and retraining programs in your county.
About WARN Act Filings
The Worker Adjustment and Retraining Notification (WARN) Act requires employers with 100 or more employees to provide 60 calendar days advance written notice of a plant closing or mass layoff. California's WARN Act (Labor Code sections 1400-1408) extends this to employers with 75 or more employees. All data on this site is sourced from filings published by the California Employment Development Department.