California · City

Layoffs in Walnut Creek

Since October 6, 2025, our records for Walnut Creek include 9 WARN notices naming 110 workers.

Part of the San Francisco-Oakland-Fremont, CA metro area.

Largest WARN notices: Verizon (54, Nov 20, 2025); John Muir Health - Treat Blvd. (23, Aug 27, 2026); John Muir Health - 1601 Ygnacio Valley Road (15, Aug 27, 2026).

WARN notices in Walnut Creek

As filed with the state (all California notices). A notice is the employer’s plan; actual job losses can differ.

Notice date Employer Location Workers Type Effective Filing
John Muir Health - 1450 Treat Blvd. Walnut Creek · Contra Costa County 4 Layoff, permanent Oct 28, 2026 State report
John Muir Health - 1601 Ygnacio Valley Road Walnut Creek · Contra Costa County 15 Layoff, permanent Oct 28, 2026 State report
John Muir Health - 177 La Casa Via Walnut Creek · Contra Costa County 2 Layoff, permanent Oct 28, 2026 State report
John Muir Health - Treat Blvd. Walnut Creek · Contra Costa County 23 Layoff, permanent Oct 28, 2026 State report
John Muir Physician Network - 1450 Treat Blvd. Walnut Creek · Contra Costa County 6 Layoff, permanent Oct 28, 2026 State report
John Muir Physician Network - 1601 Ygnacio Valley Road Walnut Creek · Contra Costa County 1 Layoff, permanent Oct 28, 2026 State report
Heritage Bank of Commerce (Walnut Creek) Walnut Creek · Contra Costa County 4 Layoff, permanent Apr 17, 2026 State report
Verizon Walnut Creek · Contra Costa County 54 Layoff, permanent Jan 23, 2026 State report
Kaiser Foundation Hospitals (501) Walnut Creek · Contra Costa County 1 Layoff, permanent Sep 17, 2025 State report

Rules and resources in California

Notice rules

Under the federal WARN Act, employers with 100 or more employees generally must give 60 days’ written notice before a plant closing or mass layoff.

California has its own rules (California WARN Act (Cal-WARN)):

  • Applies to employers with 75 or more employees, counting full-time and part-time workers.
  • Covers a layoff of 50 or more employees within a 30-day period, a plant or facility closure, or a relocation of operations.
  • Employers must give written notice at least 60 days in advance.

Source: Layoff Services: WARN, California Employment Development Department (California Labor Code, Section 1400.5). Checked October 11, 2026.

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