Whether it’s literal clockwork, the turning of the leaves, or the beginning of the holiday hubbub, fall is a season of change. Employers are noticing, too. In conjunction with third-quarter earnings reports, several large employers, such as Target, Amazon, Nestlé, UPS, Verizon, and Novo Nordisk, have announced large layoffs. Because of this unfortunate trend (and we certainly wish we had a better greeting for you this season), it seems appropriate to revisit employer obligations when reducing your workforce, if only to avoid an Ebenezer Scrooge fantasy of your own.

Employers contemplating a reduction in force (RIF) face a complex overlay of federal and state requirements, operational decisions, and reputational stakes. Among the legal regulations to navigate, the federal Worker Adjustment and Retraining Notification (WARN) Act is the centerpiece of mass layoff compliance, but it does not stand alone. Mini-WARN statutes in several states extend or modify WARN’s thresholds, timing, and content requirements, while other federal laws — from anti-discrimination and collective bargaining obligations to benefits continuation and severance considerations — shape how employers plan, communicate, and implement workforce reductions.

This post will address the federal WARN Act and the state mini-WARN Act obligations. The next post will address other non-WARN considerations for RIFs.

The WARN Act: Coverage, Triggers, Notice, and Penalties

The first consideration for employers contemplating a significant RIF is the federal WARN Act. The act requires covered employers to provide at least 60 calendar days’ written notice before certain plant closings or mass layoffs, and it covers private employers with 100 or more employees. In counting employees for WARN Act purposes, you exclude employees (1) with less than six months of service in the prior 12 months and (2) those averaging fewer than 20 hours per week.

WARN is triggered when employment losses meet statutory thresholds at a single site of employment within a 30-day period (with rolling aggregation across 90 days absent separate and distinct causes). Plant closings require notice when a shutdown causes an employment loss for 50 or more employees. Mass layoffs require notice for 500 or more employees, or 50 to 499 employees constituting at least 33% of the active workforce. “Employment loss” includes terminations other than for cause, layoffs exceeding six months, and reductions in hours of more than 50% in each month of a six-month period.

If you’re covered under the WARN Act and you’re engaged in a plant closing or mass layoff, the statute tells you who to notify and what to say. Notice must be in writing and directed to affected employees or their union representatives, the state dislocated worker unit, and the chief elected official of local government where the action occurs. Content requirements vary by recipient, but they typically include whether the action is permanent or temporary, expected timing, job titles and counts, bumping rights, union information, and a company contact. There is no mandated form, but clarity, specificity, and timely delivery are essential.

While 60 days’ notice is the default, WARN recognizes narrow exceptions that can shorten the notice period: (i) the faltering company exception for plant closings where notice would preclude obtaining capital or business that could avert a shutdown; (ii) unforeseeable business circumstances; and (iii) natural disasters. Even when an exception applies, employers must provide notice “as soon as practicable” and include a brief statement of the basis for reducing the notice period. The statute contains special rules for sale-of-business transactions and transfer offers that may prevent an “employment loss.”

Failure to notify your employees can result in back pay liability and civil penalties. Employers who violate the notice provisions face liability for up to 60 days of back pay and benefits, plus a civil penalty for failure to notify local government — though the penalty can be avoided if required payments are made within three weeks. Courts may also reduce liability for good faith, reasonable belief of compliance, and certain payments made to or on behalf of affected employees during the violation.

State “Mini-WARN” Laws: Stricter Thresholds, Longer Notice, and Added Obligations

Several states and some localities have enacted “mini-WARN” statutes that impose more stringent requirements than the federal WARN Act. These laws vary widely and are frequently updated, so a multistate reduction demands a jurisdiction-by-jurisdiction analysis. A few prominent examples illustrate the range of differences:

• New York requires covered businesses with 50 or more employees to provide 90 days’ notice for plant closings, mass layoffs, certain relocations, and covered reductions in hours. Triggers are lower than federal WARN (e.g., closings affecting 25 or more employees; mass layoffs involving 25+ employees if at least 33% of the workforce or 250+ employees).
• California’s WARN Act applies to “covered establishments” employing 75 or more persons and requires 60 days’ notice for mass layoffs, terminations, and relocations. California counts part-time employees in certain thresholds and does not impose a 33% requirement for mass layoffs.
• New Jersey requires 90 days’ notice, counts employees statewide (not just at a single site), covers employers with 100 or more employees nationwide (without regard to full-time or part-time status), and mandates severance equal to one week for each year of service — plus an additional four weeks if the full 90-day notice is not provided. Waiver of statutory severance typically requires state or court approval.
• Illinois, Washington, Tennessee, and other states have adopted mini-WARN regimes with lower employee thresholds, different aggregation rules, and expanded notice recipients. Washington’s mini-WARN (effective July 27, 2025), for example, requires 60 days’ notice from employers with 50 or more full-time employees for closures or mass layoffs impacting 50 or more employees at a single site, alongside detailed content and limited exceptions.

In sum, even if your RIF does not meet federal WARN thresholds, state mini-WARN laws may still require earlier, broader, or more burdensome notice — and sometimes additional benefits. Employers should chart their footprint and compare state statutes to federal WARN thresholds early in the planning process.

Practical WARN-Related Takeaways for Employers Contemplating a RIF

Because of the potential for overlapping obligations, consider the following whenever your RIF implicates a large number of employees:

• Treat WARN as a floor, not a ceiling.Start with federal WARN coverage and triggers, but layer in mini-WARN requirements in every affected jurisdiction. Map rolling 30- and 90-day aggregation windows across sites to avoid inadvertently triggering notice obligations after a first cut is made.
• Honor timing and content. If WARN or a mini-WARN applies, issue clear, complete, and tailored written notices to all recipients — employees or their representatives, state dislocated worker units, local government officials, and any additional state-required entities — on or before the statutory timeline. If relying on an exception, document the basis and provide notice as soon as practicable.
• Manage union and regulatory touchpoints. In unionized settings, confirm and follow bargaining obligations and contract notice requirements. Wherever WARN notices are filed, anticipate public disclosure and plan communications accordingly.
• Avoid staggered surprises. Consider the 90-day aggregation rules when planning multiple waves. If separate waves are truly distinct in cause and action, contemporaneous documentation can support that position — otherwise, assume aggregation will apply.
• Document good faith. Courts may reduce WARN liability for employers who acted in good faith with a reasonable belief of compliance. That defense is not a substitute for notice, but robust documentation of analysis, timing, recipients, and content can preserve arguments and mitigate exposure.

Terminating employees is never easy, and it can be especially difficult when the realities of business lead to large cuts. Transparent communication, fair processes, and thoughtful implementation protect people and institutions. With careful planning, employers can navigate reductions with fewer surprises and reach stronger outcomes for themselves and their employees.