Washington State WARN Notice Requirements and Penalties

Washington WARN notice requirements come from two overlapping laws: the federal Worker Adjustment and Retraining Notification Act, which covers private employers with 100 or more full-time workers, and Washington’s state WARN law under RCW 49.45, which took effect July 27, 2025, and reaches employers with as few as 50 employees in the state.¹ Both laws require 60 days of written advance notice before a qualifying plant closing or mass layoff, and both carry real financial consequences for employers that skip the step.

Because the state law casts a wider net and adds a trigger the federal statute doesn’t recognize, many mid-size Washington employers now have obligations they didn’t have before. When both laws apply, you follow whichever one is stricter on any given question.

Which Washington Employers Are Covered

The federal WARN Act covers a private employer with either 100 or more full-time employees, or 100 or more total employees (including part-time) whose combined hours reach at least 4,000 per week, not counting overtime.² A part-time employee under the federal definition is someone who averages fewer than 20 hours per week or who has worked fewer than 6 of the 12 months before notice is required.³

Washington’s state law lowers the bar to 50 or more employees in Washington, excluding part-time workers.¹ A Washington company with 60 full-time workers isn’t covered by the federal law but is covered by the state one.

Both laws apply only to private employers. The State of Washington, political subdivisions, units of local government, and Indian tribes are explicitly excluded from the state law, and federal, state, and local government entities are excluded from the federal statute.

Events That Trigger a WARN Notice

Three types of events can require advance notice in Washington: plant closings, mass layoffs, and (under state law only) sustained reductions in hours.

Plant Closings

A plant closing is the permanent or temporary shutdown of a single employment site, or one or more facilities within a site, that results in 50 or more full-time employees losing their jobs within a 30-day period.² That same threshold applies under the state law. A shutdown doesn’t have to be permanent; a facility closing for what’s expected to be a temporary period still qualifies if enough workers lose their jobs.

Mass Layoffs

A mass layoff is a workforce reduction that doesn’t involve shutting down the entire site. Under the federal WARN Act, a mass layoff triggers notice when job losses during a 30-day period hit either of these levels:

At least 50 but fewer than 500 employees, if those workers make up at least 33 percent of the active full-time workforce at that site.
500 or more employees, regardless of what percentage of the workforce they represent.

These thresholds come from 29 U.S.C. § 2101(a)(3).² Washington’s state law uses a similar structure and also treats a mass layoff of 50 or more full-time employees as a qualifying event.¹

Reductions in Hours

The state law adds a trigger with no federal equivalent: when an employer reduces the hours of 50 or more workers by 50 percent or more for each month over a six-month period.¹ An employer that moves a large share of its workforce from full-time to half-time schedules can hit this threshold without terminating anyone.

The 90-Day Aggregation Rule for Federal Compliance

Federal law doesn’t let an employer dodge notice by splitting layoffs into smaller rounds. If separate groups of job losses at a single site each fall below the 50-employee minimum but together exceed it within any 90-day period, those losses are treated as a single plant closing or mass layoff, unless the employer can prove the cuts had genuinely separate causes.⁴ Washington’s state law only counts losses within a 30-day window. Employers with 100 or more workers need to track rolling 90-day totals at each site for the federal count.

Temporary Layoffs That Stretch Past Six Months

A temporary layoff that lasts longer than six months is reclassified as an employment loss under the federal law. If the layoff was expected to last six months or less and then gets extended, the extension is treated as an employment loss dating back to when the layoff first started.⁵ The employer’s only defense is proving the extension was caused by business circumstances that couldn’t reasonably have been foreseen when the layoff began, and in that case notice must go out as soon as the need for an extension becomes foreseeable. Employers in cyclical industries who assume furloughed workers will return should either bring workers back before the six-month mark or prepare a notice.

What the Notice Must Contain

The Employment Security Department expects a letter on company letterhead that covers specific points:¹

Business name, physical and mailing addresses of the affected site, and the name and phone number of a company representative for rapid response services.
Whether the action is a layoff or closure, whether it’s temporary or permanent, the expected date of the first separation, and the schedule of any further reductions.
Whether the layoff is caused by relocating operations or by contracting out work or positions.
Total number of employees affected and job titles.
Names and addresses of impacted workers in each job category (required in the copy sent to the Employment Security Department and to any bargaining representative; a recent amendment removed the requirement to include names in notices sent directly to affected workers).
Whether a union represents the affected workers, and if so, the name of each union representative, the name and address of each union’s chief elected officer, and any bumping rights.
A company official’s signature with name and title.

Who Gets the Notice and How to File It

The 60-day written notice goes to four audiences: the affected employees (or their union, if they’re represented), the Employment Security Department, and the chief elected official of the local government where the layoff or closure will occur.¹ Depending on the location, that local official could be a mayor, a city council leader, a county executive, or someone else, and the employer has to identify the correct contact. Non-unionized employees scheduled for separation must receive direct written notice.⁴

Washington accepts the state filing by email or mail:

Email the notice to ESDGPLayoffAssistance@esd.wa.gov with “WARN” in the subject line.
Mail it to Employment Security Department, Grants Management Office, Attention: WARN Team, P.O. Box 9046, Olympia, WA 98507-9046.

After the state receives the filing, its Rapid Response team coordinates with local workforce development boards to provide on-site transition services to affected workers, including job search assistance and retraining referrals.

When Shortened Notice Is Allowed

Federal law recognizes three narrow situations where an employer may give less than 60 days’ notice. The employer bears the burden of proving the exception applies and must still provide as much notice as possible, along with a brief written explanation of why the full period wasn’t given.⁶

Faltering Company

Available for plant closings only, not mass layoffs. The employer must show it was actively seeking financing or new business when 60-day notice would have been due, that a realistic chance of getting that capital existed, that the capital would have been enough to keep operations running, and that the employer reasonably believed giving public notice would have scared off the potential investor or customer.⁶ Courts read this narrowly, and vague hopes of a turnaround don’t qualify.

Unforeseeable Business Circumstances

This covers closings and layoffs caused by circumstances the employer couldn’t reasonably have predicted when 60-day notice would have been required. The Department of Labor describes it as “some sudden, dramatic, and unexpected action or conditions outside the employer’s control.”⁷ A major client canceling a contract without warning or a sudden government shutdown order could qualify. A gradual sales decline visible months earlier would not.

Natural Disaster

When a closing or layoff is the direct result of a flood, earthquake, drought, storm, or similar event, shortened notice is allowed. “Direct” matters: if a disaster damages a supplier and the downstream effect leads to layoffs months later, the connection may be too attenuated to qualify.⁶

Penalties for Noncompliance

An employer that orders a plant closing or mass layoff without proper notice owes each affected employee back pay at the employee’s regular rate (either the average rate over the last three years or the final rate, whichever is higher), plus the cost of benefits, including medical expenses the employee incurs that would have been covered, for each day of the violation, up to 60 days.⁸ That liability can’t exceed half the number of days the employee actually worked for the company.

Failing to notify the local government carries a separate federal civil penalty of up to $500 per day of violation. That penalty doesn’t apply if the employer pays each affected employee the full back pay and benefits owed within three weeks of ordering the shutdown or layoff.⁸

Washington’s state law imposes its own penalty of up to $500 per day when the employer fails both to provide the 60-day notice and to pay employees back pay and the cost of benefits for each day of the violation.⁹ Required state-level payments to affected employees must be made within three weeks of ordering the closure, mass layoff, or reduction in hours.

Federal liability can be reduced by wages the employer actually paid during the violation period, voluntary payments it made that weren’t legally required, and payments to third parties on the employee’s behalf (such as health insurance premiums). A court also has discretion to reduce the penalty if the employer proves it acted in good faith with reasonable grounds for believing it wasn’t violating the law.⁸

How Enforcement Works

The federal WARN Act is enforced entirely through private lawsuits in U.S. District Court. The Department of Labor does not bring enforcement actions and is limited to providing guidance.⁵ An employee or union can sue in any federal district where the violation occurred or where the employer does business, and a court can award reasonable attorney’s fees to the winning party. Class actions covering hundreds of workers are common.¹⁰ Washington’s state law provides its own private right of action, with a three-year statute of limitations.

Sales, Transfers, and What Doesn’t Count as a Loss

When a business changes hands, the seller is responsible for notice of any plant closing or mass layoff that occurs up to and including the date of the sale. The buyer picks up responsibility for any qualifying event after the sale closes.¹¹ The sale itself isn’t an employment loss as long as workers keep their jobs, since the seller’s employees are generally treated as automatically becoming the buyer’s employees at the point of sale. A buyer planning to restructure right after closing needs to count forward from the acquisition date and provide its own notice.

Not every job change tied to a closing or layoff counts as an “employment loss.” A worker offered a transfer to a different site within a reasonable commuting distance, with no more than a six-month break in employment, isn’t counted toward the WARN threshold. The same applies to transfers outside reasonable commuting distance if the employee accepts within 30 days. Workers reassigned to employer-sponsored retraining or job search programs also don’t count, unless the reassignment amounts to a constructive discharge.¹²

1
Employment Security Department. WARN Requirements
2
Office of the Law Revision Counsel. 29 USC Chapter 23 – Worker Adjustment and Retraining Notification
3
Office of the Law Revision Counsel. 29 USC 2101 – Definitions; Exclusions From Definition of Loss of Employment
4
Office of the Law Revision Counsel. 29 USC 2102 – Notice Required Before Plant Closings and Mass Layoffs
5
U.S. Department of Labor. Worker Adjustment and Retraining Notification Act Frequently Asked Questions
6
eCFR. 20 CFR 639.9 – When May Notice Be Given Less Than 60 Days in Advance
7
U.S. Department of Labor. WARN Advisor – Unforeseeable Business Circumstances
8
Office of the Law Revision Counsel. 29 USC 2104 – Liability
9
Employment Security Department. Washington State Expands Federal WARN Act Requirements and Penalties
10
U.S. Department of Labor. WARN Advisor
11
U.S. Department of Labor. WARN Advisor
12
eCFR. 20 CFR 639.3 – Definitions