Five WARN Act Mistakes That Lead to Litigation

The Worker Adjustment and Retraining Notification Act has been in effect since 1989. It is not a new law, the requirements are not ambiguous, and the penalties are clearly defined. Yet employers continue to generate litigation under it, consistently, for the same five reasons.

Mistake 1: Miscounting the Decisional Unit

Federal WARN is triggered when 50 or more employees at a single site of employment experience an employment loss within a 90-day period. The error most employers make is defining the site of employment too narrowly.

If you close a division housed across two buildings in the same metro area, those buildings may constitute a single site of employment under the Department of Labor's guidance. If you conduct a rolling series of smaller layoffs over several months that aggregate to 50 or more in a 90-day window, the aggregation rule applies.

Count carefully, and count across the full 90-day lookback period, not just the current action.

Mistake 2: Using an Exception Without Documenting It

WARN includes three statutory exceptions: the faltering company exception, the unforeseeable business circumstances exception, and the natural disaster exception. Each one can reduce or eliminate the 60-day notice requirement, but only if the company can demonstrate the exception applies and acted in good faith.

The unforeseeable business circumstances exception is the most commonly invoked and the most commonly misapplied. A sudden loss of a major customer, an unexpected economic downturn, or an abrupt credit facility withdrawal can qualify. A budget shortfall that developed over several quarters does not.

If you are invoking an exception, document the specific facts that make the business circumstances unforeseeable, record the date you became aware of those circumstances, and send as much advance notice as is practicable. The partial-notice requirement is real even when the exception applies.

Mistake 3: Missing State Mini-WARN Requirements

Eighteen states have enacted their own WARN-equivalent statutes. California's WARN Act applies to employers with 75 or more employees, requires 60 days notice, and has no federal exemptions built in. New York's statute requires 90 days notice and covers employers with 50 or more full-time employees.

A company that correctly analyzes federal WARN and concludes it does not apply may still trigger three state mini-WARN statutes if it has locations in California, New York, and New Jersey. Federal compliance and state compliance are separate analyses.

Mistake 4: Sending Notice to the Wrong Recipients

WARN requires notice to affected employees or their union representatives, the state dislocated worker unit, and the chief elected official of the unit of local government within which the site is located. In practice, employers often send notice to employees and stop there.

The state and local government notice requirements are mandatory. Missing them is an independent basis for liability separate from any failure to notify employees.

Mistake 5: Starting the Clock Wrong

The 60-day notice period runs from the date the notice is received, not the date it is sent. First-class mail notice is deemed received three days after mailing, which means you need to mail 57 days before the planned employment loss date to meet the 60-day requirement using mail delivery.

Employers who calculate backward from the termination date without accounting for delivery time consistently come up short. Use hand delivery or overnight delivery for certainty on the receipt date, and document the delivery.

What Defensible WARN Compliance Looks Like

A clean WARN process starts with an accurate headcount across the full 90-day window, includes a state-by-state analysis for every affected location, sends notice to all required recipients through a documented delivery method, and retains the filings and delivery confirmation.

People Plan automates the state-by-state WARN threshold check, generates the required notice documents for each jurisdiction, and maintains a timestamped audit trail of every notification. For a full checklist of compliance obligations beyond WARN, see our RIF compliance checklist. If you are planning a reduction, the WARN compliance workflow is available during your trial period.