Michigan WARN Notice: Triggers, Filing, and Penalties

A Michigan WARN notice is the 60-day written warning that federal law requires before a large layoff or plant closing takes effect in the state. Michigan has no WARN statute of its own, so the federal Worker Adjustment and Retraining Notification Act sets the rules. Covered employers must give the notice to affected workers, to the Michigan Department of Labor and Economic Opportunity, and to the chief elected official of the city, township, or county where the worksite sits. Employers who shortchange the notice period owe back pay of up to 60 days per affected worker and can face daily civil penalties on top of that.

Which Employers Have to Give Notice

WARN applies to a business that employs 100 or more full-time workers, or 100 or more employees (including part-time staff) whose combined weekly hours add up to at least 4,000, not counting overtime. Part-time workers and anyone employed fewer than six of the last twelve months do not count toward the 100-employee threshold under the first test, though their hours still count under the second.¹

Public employers are outside the law. Federal, state, and local government bodies are not “employers” under the Act, so public-sector layoffs in Michigan do not trigger WARN notice at all.

What Layoffs Trigger the Notice

Two kinds of events require the 60 days: a plant closing and a mass layoff. They are measured at a single site over a 30-day window.

Plant Closing

A plant closing happens when an employer shuts down a facility, or an operating unit within a facility, and that shutdown causes an employment loss for 50 or more full-time employees during any 30-day period. The shutdown does not have to be permanent. A temporary closure can still qualify if the employment loss meets the definition.¹

Mass Layoff

A mass layoff is a reduction in force unrelated to a plant closing that meets one of two size tests in any 30-day period at a single site. The first test requires both at least 50 full-time employees affected and at least 33 percent of the full-time workforce at that site. The second test is met whenever 500 or more full-time employees lose their jobs, regardless of what share of the workforce that is.¹ The 50-person floor on the first test matters: cutting 40 percent of a 120-person site is only 48 workers, which falls short.

Rounds That Add Up

Employers cannot avoid the law by splitting one layoff into smaller rounds. If two or more rounds at a single site each fall below the threshold but together cross it inside any 90-day window, the law treats them as one event, unless the employer proves the rounds came from genuinely different causes.²

What Counts as an Employment Loss

Not every separation counts. WARN defines employment loss as one of three things: an involuntary termination (other than firing for cause, a voluntary quit, or a retirement), a layoff lasting longer than six months, or a cut in hours of more than 50 percent in each month of any six-month stretch.³

The six-month rule creates a retroactive trap. If an employer calls a layoff four months and then extends it past six, WARN liability can attach back to the start. When the extension stems from the same cause as the original layoff, the employer is treated as having owed 60 days’ notice from the beginning. If the extension results from an unforeseeable change in circumstances, notice is owed from the point the employer learns the extension is necessary.⁴

Who Gets the Notice and What It Says

Three separate audiences have to be notified.

Affected employees or their union. If workers are represented, the notice goes to the chief elected officer of the union. Non-union workers each get a written notice directly.⁵
The state dislocated worker unit. In Michigan, that is the Workforce Development division within the Department of Labor and Economic Opportunity.⁶
The local government. The chief elected official of the city, township, or county where the worksite sits must receive written notice.

Content requirements vary by recipient. A notice sent directly to a non-union employee must state whether the action is permanent or temporary, the expected separation date, whether bumping rights exist (letting more senior workers displace less senior ones), and a company contact’s name and phone number. Union notices replace the bumping-rights line with the names of individual workers in the affected positions.

The version going to the state and local government carries more detail: site name and address, job titles with employee counts in each, whether bumping rights exist, the name of each union representing affected workers, and either the expected date of the first separation or a 14-day window during which separations will begin. If an employer uses a 14-day window, the 60-day clock runs from the first day of that window.⁷

How to Submit the Notice in Michigan

Michigan employers can send the state notice by email to LEO-RapidResponseCommunications@Michigan.gov or by mail to the Department of Labor and Economic Opportunity, Workforce Development, P.O. Box 30805, Lansing, MI 48909.⁶ Email creates a timestamp; certified mail gives a formal delivery receipt. The notice to the local chief elected official goes separately, by mail or hand delivery to the municipal office.

After the state receives the notice, Michigan’s Rapid Response team contacts the employer to coordinate transition services for affected workers, including help from the Michigan Works! network.

When Less Than 60 Days’ Notice Is Allowed

Three narrow exceptions let an employer shorten the notice period. Even then, the employer has to give as much notice as possible and must include a written explanation of why the full 60 days was not practical.²

Faltering company. The employer was actively seeking capital or business that would have let it avoid or postpone the shutdown, and reasonably believed in good faith that announcing the layoff would have scared off the deal. This one applies only to plant closings.
Unforeseeable business circumstances. The event was caused by conditions the employer could not reasonably have predicted when notice would have been due. Courts look for sudden, dramatic, unexpected events outside the employer’s control.
Natural disaster. No notice is required when the layoff is a direct result of a flood, earthquake, or similar event.

The employer bears the burden of proving the exception. A general hope that things would improve does not satisfy the faltering-company test; there has to be evidence of a specific financing prospect or business opportunity that was in play.

What an Employer Owes for Skipping Notice

An employer that fails to give the full notice owes each affected employee back pay and benefits for every day of the violation, up to 60 days. Back pay is figured at the higher of the employee’s average rate over the last three years or the employee’s final regular rate, and it includes the cost of lost benefits such as health insurance premiums the employer would have paid. Per-employee liability is also capped at half the total days the person worked for that employer.⁸

Wages and voluntary payments the employer already made during the violation period reduce the liability, as do continued benefit contributions. If the employer fails to notify local government, there is also a civil penalty of up to $500 per day. That penalty disappears entirely if the employer pays all affected employees what they are owed within three weeks of ordering the layoff.⁸ Courts can also reduce penalties when the employer acted in good faith and had reasonable grounds for believing it was complying with the law.

How Workers Enforce a WARN Violation

No agency investigates WARN complaints. The U.S. Department of Labor only provides guidance.⁹ Enforcement runs through private lawsuits in federal district court. An individual worker, a group of workers, or a union representative can sue on behalf of all affected employees.⁸

The Act contains no statute of limitations of its own. In North Star Steel Co. v. Thomas, the U.S. Supreme Court held that federal courts have to borrow the most analogous limitations period from state law. In Michigan that means the filing deadline depends on which state statute the court treats as closest to a WARN claim, which is not a question with a clean answer. If you think your employer violated the law, talking to an employment attorney quickly is the safest way to protect your claim.

1
Office of the Law Revision Counsel. 29 USC Chapter 23 – Worker Adjustment and Retraining Notification
2
Office of the Law Revision Counsel. 29 USC 2102 – Notice Required Before Plant Closings and Mass Layoffs
3
Office of the Law Revision Counsel. 29 U.S. Code 2101 – Definitions, Exclusions From Definition of Loss of Employment
4
U.S. Department of Labor. WARN Advisor
5
U.S. Department of Labor. Plant Closings and Layoffs
6
Michigan Department of Labor and Economic Opportunity. Worker Adjustment and Retraining Notification Act
7
eCFR. 20 CFR 639.7 – What Must the Notice Contain?
8
Office of the Law Revision Counsel. 29 USC 2104 – Administration and Enforcement of Requirements
9
U.S. Department of Labor. Worker Adjustment and Retraining Notification Act Frequently Asked Questions