PA WARN Notice Requirements: Triggers, Timing, and Penalties

Pennsylvania follows the federal Worker Adjustment and Retraining Notification Act, so PA WARN notice requirements come straight from 29 U.S.C. §§ 2101–2109: a covered employer planning a plant closing or mass layoff must deliver written notice at least 60 days in advance to affected workers or their union, to the Pennsylvania Department of Labor & Industry, and to the chief elected official of the local government where the site sits. Pennsylvania has not enacted a separate state WARN law, and DLI’s role is to receive the notice, publish it, and send rapid response services to the affected workforce.¹

Is Your Business Covered

WARN applies only if your company meets one of two headcount tests:

100 or more full-time employees, counting full-timers only; or
100 or more employees total (including part-time) who together work at least 4,000 hours per week, excluding overtime.²

Satisfying either test is enough. The second one catches employers that lean heavily on part-time staffing: a company with 70 full-timers and 40 part-timers can fail the first test and still be covered if weekly hours clear 4,000. A part-time employee for WARN purposes averages fewer than 20 hours per week or has worked fewer than 6 of the preceding 12 months. Part-timers don’t count toward the 100-employee threshold under the first test, but if you are covered, they still receive notice when a triggering event affects them.

What Triggers the 60-Day Notice

Two kinds of workforce reductions require WARN notice, and the thresholds are different for each.

Plant Closing

A plant closing is a permanent or temporary shutdown of a single site, or a facility or operating unit within it, that eliminates jobs for 50 or more full-time employees during any 30-day period. The whole facility doesn’t have to go dark; closing one production line can be enough. Part-time employees are excluded from the 50-employee count.²

Mass Layoff

A mass layoff is a reduction in force that isn’t tied to a facility closing. Notice is required if employment losses at a single site during any 30-day period hit either:

50 to 499 full-time employees, when they also represent at least 33 percent of the active full-time workforce at that site; or
500 or more full-time employees, regardless of percentage.²

The 33 percent threshold trips up mid-sized employers. A site with 200 full-time workers that lets go of 60 (30 percent) owes no notice; cutting 67 of them does. Also note the trigger includes not just outright terminations but layoffs lasting more than six months and hour reductions of more than half in each month of any six-month stretch. If a layoff the employer genuinely expected to run six months or less turns out to run longer, the notice obligation attaches then.²

The 90-Day Aggregation Rule

You can’t split a layoff into smaller rounds to stay under the thresholds. If separate rounds of cuts at a single site each fall short individually but together clear the trigger within any 90-day window, WARN notice is owed before each round, unless the employer can show the actions came from genuinely separate and distinct causes.³ This anti-evasion rule is among the most heavily litigated parts of the statute.

Who Gets Notice and What It Must Say

Three recipients, each requiring a slightly different notice:⁴

Affected employees, or their union. Represented workers receive notice through the chief elected officer of the bargaining unit; unrepresented workers each get individual written notice. In mixed workplaces, the employer does both.⁵
The Pennsylvania Department of Labor & Industry, which handles the state’s rapid response function.¹
The chief elected official of the local government where the site is located, typically the mayor or county executive. If the site crosses jurisdictions, notice goes to the official of the one receiving the highest tax payments from the employer.⁵

Pennsylvania does not prescribe a form. Any written format works as long as the content meets 20 CFR 639.7 and the recipient has it 60 days before separations begin.¹ Individual employee notices should carry the name and address of the employment site, the expected date of the first separation and of the recipient’s own separation, whether the action is permanent or temporary, the recipient’s job title, and a company contact who can answer questions. Union notices cover the bargaining unit as a whole with the same essential information. Notices to DLI and the local official should include aggregate numbers broken down by job classification, the company’s contact information, and the anticipated timeline.

The 60-Day Clock and Delivery

The clock runs from the date the recipient actually receives the notice, not the date it was sent.⁴ There is no required delivery method. The Department of Labor says any reasonable method ensuring receipt will do: a mailed letter, hand delivery at work, or inclusion with a paycheck.⁶ A general bulletin-board posting does not satisfy the individual notice requirement for unrepresented workers. Many employers use certified mail or hand delivery with a signed acknowledgment because proving receipt matters if the notice is later challenged, though neither is legally required.

Pennsylvania employers submit WARN notices to DLI through the agency’s online submission page, after which the notice is posted to a public listing organized by month and year, and the rapid response team begins contacting the affected workforce.⁷

When Less Than 60 Days Is Allowed

Three exceptions permit shortened notice. Even when one applies, the employer must give as much notice as practicable and include a brief statement explaining why the full 60 days was not possible.⁴

Faltering company. Available only for plant closings. The employer must have been actively seeking capital or new business that would have let it avoid or postpone the shutdown, and must have reasonably believed in good faith that giving 60 days’ notice would have scared off the financing or deal.⁸ Courts read this narrowly.

Unforeseeable business circumstances. Covers sudden, dramatic, unexpected events outside the employer’s control. The Department of Labor’s standard example is a major customer canceling a large order with no warning.⁹ A general economic slide that’s been building for months doesn’t qualify. The test is what a reasonable business person would have foreseen when the 60-day notice should have gone out.

Natural disaster. When a closing or layoff is a direct result of a flood, earthquake, drought, or similar event, no WARN notice is required at all.⁴ This exception eliminates the obligation rather than just compressing the timeline.

Business Sales and Labor Disputes

In a sale of the business, the seller handles WARN notice for any closing or layoff occurring up to and including the sale date; after the sale, the obligation shifts to the buyer.¹⁰ Purchase agreements often allocate responsibility privately, but the statute looks to the timeline, not the contract.

A closing or layoff that results directly from a strike or lockout does not trigger WARN, provided the labor dispute wasn’t engineered to dodge the requirement. Non-striking workers at the same site, employees in other bargaining units, and workers at other company locations affected by the shutdown still receive notice unless the employer can invoke unforeseeable business circumstances.

What Non-Compliance Costs

An employer that falls short faces two liabilities. To affected workers, the employer owes back pay at the employee’s regular rate plus the value of benefits (including medical coverage) that would have continued during the notice period. This runs for each day the notice fell short, up to 60 days per employee.¹¹

Failure to notify the local government carries a civil penalty of up to $500 per day. That fine is waived if the employer pays all affected employees their owed back pay and benefits within three weeks of ordering the shutdown or layoff.¹¹

Courts can reduce penalties when an employer proves it acted in good faith with reasonable grounds for believing it wasn’t violating the law.¹² WARN is enforced through private lawsuits in federal district court. No government agency investigates violations on its own; affected employees or their unions bring the claim themselves.

What Happens After You File With DLI

Once DLI receives a WARN notice, it posts the notice to a public listing and begins coordinating rapid response assistance through the PA CareerLink network, connecting affected workers with reemployment services. Employers with procedural questions can reach the rapid response team at ra-li-bwpo-rapid@pa.gov.¹

1
Department of Labor and Industry. Worker Adjustment and Retraining Notification Act (WARN)
2
Office of the Law Revision Counsel. 29 USC 2101 – Definitions
3
U.S. Department of Labor. WARN Advisor – Aggregation
4
Office of the Law Revision Counsel. 29 USC 2102 – Notice Required Before Plant Closings and Mass Layoffs
5
U.S. Department of Labor. WARN Advisor – Notice Recipients
6
U.S. Department of Labor. WARN Advisor – Delivery Methods
7
Commonwealth of Pennsylvania. Submit a Worker Adjustment and Retraining Notification (WARN) Notice
8
U.S. Department of Labor. WARN Advisor – Faltering Company
9
U.S. Department of Labor. WARN Advisor – Unforeseeable Business Circumstances
10
U.S. Department of Labor. WARN Advisor – Sale of Business
11
Office of the Law Revision Counsel. 29 USC 2104 – Administration and Enforcement of Requirements
12
Office of the Law Revision Counsel. 29 US Code 2104 – Administration and Enforcement of Requirements