The Sixty Days and When the Clock Starts
The statute forbids ordering a closing or a mass layoff until sixty days after written notice is served. The date that starts the count is the first individual termination in the statutory window, and every later group is entitled to a full sixty days of its own.

The rule in short
Notice must be given at least sixty calendar days before a planned closing or mass layoff. Where separations occur on different days, the first individual termination within the statutory thirty-day or ninety-day period triggers the requirement, and each subsequent group of terminees is entitled to a full sixty days. A notice may express the date as a specific day or as a fourteen-day period, in which case the sixty days run from the first day of that period.
The federal obligation is expressed as a prohibition rather than a duty. An employer shall not order a plant closing or mass layoff until the end of a sixty-day period after the employer serves written notice. That framing matters, because it fixes what has to happen before the action rather than describing something the employer must remember to do alongside it. The count is in calendar days and it runs from service, not from an internal decision or a public announcement.
The event the sixty days run from
Where every affected employee leaves on the same day, the calculation is simple. Where they do not, the regulation supplies the rule: when all employees are not terminated on the same date, the date of the first individual termination within the statutory thirty-day or ninety-day period triggers the sixty-day notice requirement. A worker's last day of employment is considered the date of that worker's layoff.
The regulation then adds the sentence that governs staggered reductions: the first and each subsequent group of terminees is entitled to a full sixty days' notice. Those two rules operate together. The first fixes when the obligation arises for the action as a whole; the second means the obligation is measured individually, so a group leaving in the fourth month of a phased reduction must itself have received sixty days.
The practical consequence is that a single notice served sixty days before the first separation covers the whole program only if every later group also has sixty days from that service. Where a phase was not contemplated when the notice went out, the people in it have not had their sixty days, and the earlier notice does not supply them.
There is a further wrinkle where a business changes hands. The seller is responsible for notice of any closing or layoff up to and including the effective date of the sale, and the buyer is responsible afterwards. Any person who is an employee of the seller other than a part-time employee as of the effective date is considered an employee of the buyer immediately after it. The regulation adds that if the seller knows of definite buyer plans to act within sixty days of the purchase, the seller may give notice as the buyer's agent if empowered to do so, but the responsibility stays with the buyer either way.
A specific day, or a fourteen-day window
The regulation permits an employer that cannot fix an exact separation date to use a range. It defines date, for the purposes of the content rules, as a specific date or a fourteen-day period during which a separation or separations are expected to occur. Where separations are planned on a schedule, the schedule should indicate the specific dates or the beginning date of each fourteen-day period in which separations are expected.
The concession carries a cost. Where a fourteen-day period is used, notice must be given at least sixty days in advance of the first day of that period. An employer using a window therefore gives up to fourteen days of additional lead time in exchange for the flexibility, and an employer that wants the last possible date has to name a specific day.
Service is the other half of the timing question, and the statute addresses it lightly. The mailing of notice to an employee's last known address, or inclusion of the notice in the employee's paycheck, is stated to be an acceptable method of fulfilling the obligation to give notice to each affected employee. The regulations leave the choice of the person who prepares and delivers the notice to the employer, suggesting the local site plant manager, the local personnel director or a labor relations officer as the usual choices. What none of those provisions does is allow an oral briefing to stand in for the written document.
| Situation | How the sixty days are measured | Source of the rule |
|---|---|---|
| All separations on one day | Sixty calendar days before that day | Statutory prohibition on ordering the action |
| Staggered separations | From the first termination in the statutory window, and a full sixty days for each later group | Regulation on when notice must be given |
| Date given as a fourteen-day period | Sixty days before the first day of the period | Regulation on the contents of the notice |
| Action postponed by less than sixty days | Additional notice as soon as possible, referring to the first | Regulation on extending notice |
| Action postponed by sixty days or more | Treated as a new notice, with the full timing rules applying again | Regulation on extending notice |
Notice given early, and notice given conditionally
Voluntary notice more than sixty days in advance does not discharge the obligation unless it is complete. The regulation provides that where voluntary notice has been given more than sixty days ahead but does not contain all the required elements, the employer must ensure that all of the required information is provided in writing to the statutory recipients at least sixty days before the action. An early announcement lacking the elements set out in what the notice must contain and who receives it starts nothing.
Conditional notice is permitted within limits. Notice may be given conditional on the occurrence or non-occurrence of an event, such as the renewal of a major contract, only where the event is definite and its outcome will necessarily, in the normal course of business, lead to a covered closing or mass layoff less than sixty days after the event. The regulation's own example is a contract whose non-renewal will close a plant thirty days after expiry. The conditional notice must still contain every required element.
The regulation provides that the information in a notice is based on the best information available to the employer when it is served, and states that errors arising because events later changed, or minor inadvertent errors, are not intended to be the basis for finding a violation. That protects an employer whose forecast moved. It does not protect one that served a notice it knew to be incomplete, and it does not excuse the additional notice required when the schedule slips.
Short notice, and what payment does
Where the sixty days cannot be given, the statute provides three narrow exceptions rather than a general excuse, and they permit reduced notice rather than none. Their contours are set out in the three exceptions and how narrowly they are read. Outside those exceptions, a short notice is a violation from the moment the action is ordered.
What an employer pays after that point affects the size of the exposure rather than its existence. Liability runs for the period of the violation, capped at sixty days and at half the number of days the employee worked for the employer, and it is reduced by wages paid for the violation period, by voluntary and unconditional payments not required by any legal obligation, and by payments to a third party or trustee on the employee's behalf. Because the reductions turn on characterization, the terms on which any payment is made matter, a point developed in the damages an employer owes for a short notice.
Points to carry away
- An employer may not order a covered closing or mass layoff until the end of a sixty-day period after written notice is served.
- The days are calendar days, not business days.
- Where separations are staggered, the first termination in the statutory window triggers the requirement.
- Each subsequent group of terminees is entitled to a full sixty days of notice.
- A notice may use a specific date or a fourteen-day period, with the sixty days measured from the first day of the period.
- A worker's last day of employment is the date of that worker's layoff.
Questions readers ask
Can an employer pay wages instead of giving notice?
The statute does not authorize it as a substitute. The obligation is to serve written notice sixty days before ordering the action, and an employer that separates people immediately has violated that obligation whatever it pays. What payment does is reduce exposure: liability is calculated for the period of the violation up to sixty days, and the amount is reduced by wages paid for that period and by voluntary and unconditional payments not required by any legal obligation. Payment therefore mitigates damages rather than satisfying the duty.
Do the sixty days include weekends and holidays?
Yes. The regulation states the requirement in calendar days: notice must be given at least sixty calendar days prior to any planned plant closing or mass layoff. Nothing in the statute or the regulation converts them to business days or excludes public holidays. The practical effect is that a sixty-day period spanning a holiday season contains substantially fewer working days than the number suggests, which matters for the consultation and record-gathering an employer expects to do inside it.
What if the date of the action moves?
Additional notice is required when the date or schedule of dates is extended beyond the date or the ending date of any fourteen-day period announced in the original notice. If the postponement is for less than sixty days, the further notice should go out as soon as possible to the same recipients, referring to the earlier notice, giving the new date or period and the reasons. If the postponement is sixty days or more, the further notice is treated as a new notice subject to the timing, recipient and content rules.
Sources
- 29 U.S.C. 2102 — Notice required before plant closings and mass layoffsProhibits ordering a closing or mass layoff until the end of a sixty-day period after written notice is served.
- 20 CFR 639.5 — When must notice be givenStates the sixty calendar day rule, the first-termination trigger and the entitlement of each later group to full notice.
- 20 CFR 639.7 — What must the notice containDefines date to mean a specific day or a fourteen-day period and requires notice sixty days before its first day.
- 20 CFR 639.10 — When may notice be extendedRequires additional notice when the schedule slips and treats a postponement of sixty days or more as a new notice.
- 29 U.S.C. 2104 — Administration and enforcement of requirementsCaps liability at the period of the violation up to sixty days and allows reductions for wages and voluntary payments.
- 20 CFR 639.4 — Who must give noticeExplains who within the organization prepares and delivers the notice and how responsibility falls on a sale.
Rapid Response Law is a publication, not a law firm. This article states general rules and cites its sources; it is not advice about any particular case, and the law differs by state and changes over time.
More in Layoff Notice
Giving as Much Notice as Possible When an Exception Applies
Where a statutory exception applies, the employer must give as much notice as is practicable to the union, non-represented employees, the state dislocated worker unit and the unit of local government, and the regulation acknowledges that in some circumstances this may be notice after the fact. At the time notice is actually given, the employer must also provide a brief statement of the reason for reducing the notice period, in addition to the ordinary content elements.
What Counts as a Single Site of Employment
A single site of employment can be one location or a group of contiguous locations, and a campus or industrial park may be one site. Separate buildings not in immediate proximity may still be one site where they are reasonably close, used for the same purpose and share staff and equipment. Contiguous buildings with separate management, different products and separate workforces are separate sites. Mobile and outstationed workers belong to the home base from which their work is assigned.
State Statutes That Demand More
State notice statutes depart from the federal model in four directions. California sets coverage at a seventy-five person establishment and counts a mass layoff at fifty separations without any percentage test. New York halves the employer threshold, sets closings at twenty-five and requires ninety days. Maine requires ninety days to a state official before a closing or relocation and imposes severance pay of one week per year of service.


