California applies Cal-WARN at Labor Code §§1400 to 1408 to any covered establishment that has employed 75 or more people, full-time and part-time alike, in the preceding 12 months. There is no percentage test: a layoff of 50 or more within 30 days triggers it whatever the workforce size, and a relocation of at least 100 miles triggers it whatever the headcount. Senate Bill 617 amended §1401 so every layoff notice must now say whether the employer will coordinate rapid response services through the local workforce development board, another entity, or not at all, carry that board's contact details, and describe the CalFresh program.
New York runs a 90-day notice period under Labor Law §860 and 12 NYCRR Part 921 for private employers with 50 or more full-time employees. The mass layoff threshold drops to 25 employees where they are at least a third of the site workforce, or 250 outright. Notice goes to a wider circle than federal law contemplates, including the local workforce investment board, the school district and any locality providing emergency services. The state has also added a filing disclosure asking whether technological innovation or automation contributed.
New Jersey is the outlier every multi-state employer needs to price in. Under the amended Millville Dallas Airmotive Plant Job Loss Notification Act at N.J.S.A. 34:21-1, it reaches employers with 100 or more employees nationwide with no part-time carve-out, triggers on 50 or more terminations statewide in 30 days, and demands 90 days of notice. Severance of one week per full year of service is mandatory even when notice is timely, cannot be conditioned on signing a release, and cannot be waived without approval from the Commissioner or a court.
Illinois and Washington both sit below the federal headcount. Illinois covers employers with 75 or more full-time employees under 820 ILCS 65, filing with the Department of Employment Security. Washington covers employers at 50 under the Securing Timely Notification and Benefits for Laid-Off Employees Act, drops the percentage test, and allows losses across multiple sites to be aggregated. Ohio has joined the group, and Delaware, Hawaii, Iowa, Maine, Maryland, New Hampshire, Tennessee, Vermont and Wisconsin each keep their own thresholds. Scope a national RIF state by state.