This diversity case has been through two jury trials and is again before us on appeal. Some two years ago, this court considered the case and reversed the trial court’s grant of partial summary judgment as to the plaintiffs’ breach of contract claim. At a subsequent trial, judgment was entered for the plaintiffs, and the defendant, Kerr-McGee Coal Corporation (“KMC”), now appeals from the jury verdict awarding damages for breach of employment contract. We must determine whether the law of the case doctrine bars consideration of appellant’s claimed error as having been decided implicitly in the previous appeal. Exercising jurisdiction pursuant to 28 U.S.C. § 1291, we conclude that the doctrine of law of the case bars consideration of the merits of KMC’s claims and affirm.
I
In 1992, KMC fired appellees Leroy Mcllravy, Allen Lee Mahoney, Richard E. Massman, and Robert H. Gray, all salaried, supervisory employees, as part of a reduction in force (“RIF”). It allegedly did so without considering appellees’ seniority at the company and without cause, in violation of the following RIF provision jn jq/[Q’s 1976 and 1977 employee handbooks:
REDUCTIONS IN FORCE
If a job is eliminated or an operation reduced, the determination of the employee or employees to be demoted or laid off will be made on the basis of qualifications and seniority.
A. Demotions
Demotions in a progression line required by reduction of force will generally be made in the reverse of the normal order of promotion. An employee demoted to a lower classification will carry back all earned classification seniority. Employees will, on the basis of qualifications and Classification Seniority, successively demote downward through the classifications of the affected progression line. An employee who is displaced from a progression line by this demotion procedure may only displace an employee with less Company Seniority who occupies either another entry level classification in a progression line or the lowest related non-progressional classification (s), provided the employee has the qualifications to perform the work of such classification.
B. Layoffs
Layoffs will be made from the entry level classification in progression lines or from non-progressional classifications. An employee subject to being laid off from the higher rated non-progressional classification (s) may only displace an employee with less Company Seniority who occupies either an entry level job in a progression line or the lowest rated *1034 non-progressional classification (s), provided the employee has the qualifications to perform the work of such classification.
(III R. at 967-68.)
In 1993, appellees filed suit against KMC in United States District Court for the District of Wyoming, alleging breach of contract, breach of the implied covenant of good faith and fair dealing, and promissory estoppel arising from the RIF. The district court granted summary judgment to KMC on all claims save the claim of promissory estoppel, the parties tried that claim, and a jury found for KMC. On appeal, this court affirmed the jury verdict and the grant of summary judgment on appellees’ claim of breach of the implied covenant of good faith and fair dealing, but reversed the grant of summary judgment on the breach of contract claim, finding there was a genuine issue of material fact as to whether KMC breached an employment contract with appellees.
See McIlravy v. Kerr-McGee Corp.,
Specifically, Mcllravy I held, inter alia, that the foregoing RIF provision
indicates that [KMC] would take seniority into account in selecting employees for layoffs ... [I]t can also reasonably be construed as representing that the company would make layoffs in order of seniority, if the conditions above were met. Plaintiffs contend that the company’s selection of them for termination breached these representations. They have cited evidence that the company went strictly by performance rankings when it selected them for termination and that it gave no consideration at all to seniority. Under the circumstances, we agree with appellants that genuine issues of material fact exist as to whether [KMC] performed according to the representations in the handbook. Accordingly, the summary judgment in favor of defendant on the breach of contract claim must be reversed and remanded to the district court for further proceedings consistent with this opinion.
Id. at 881-82 (citation omitted).
On remand, a second jury rendered its verdict against KMC, awarding appellees total damages of $2,371,028 for breach of contract. KMC thereupon filed a motion for judgment as a matter of law, alleging that the RIF provision did not apply to salaried, supervisory employees and, even if it did, the RIF provision was inapplicable and unenforceable under the circumstances of the present case. The district court denied KMC’s motion, which led to this appeal.
II
Before reaching the merits of KMC’s claims of error, we must decide whether to bar them under the doctrine of law of the case.
1
“[T]he law of the case ‘doctrine posits that when a court decides upon a rule of law, that decision should continue to govern the same issues in subsequent stages in the same case.’ ”
United States v. Monsisvais,
The enunciated rationales for the law of the case doctrine are compelling: The doctrine is “based on sound public policy that litigation should come to an end and is designed to bring about a quick resolution of disputes by preventing continued re-argument of issues already decided,”
Gage v. General Motors Corp.,
The doctrine is, however, “only a rule of practice in the courts and not a limit on their power.”
Id.
(citing
Messinger v. Anderson,
A
As noted, this court has considered once before appellees’ ability to enforce the RIF provision of the handbooks in an appeal at the summary judgment stage of this litigation.
See McIlravy I,
KMC’s claim that the RIF provision does not apply to salaried, supervisory employees like appellees is less straightforward. In this court’s earlier decision, that issue was implicitly rather than explicitly decided. In addition to finding there was a genuine issue of material fact as to whether KMC had breached a contract with plaintiffs based on the RIF provision, Mcllravy I held that “[t]aken as a whole, the ... handbooks are sufficiently ambiguous that they could be said to have reasonably created expectations on plaintiffs’ part that the company had promised not to discharge employees absent cause *1036 for the dismissal.” Id. at 880. The foregoing language indicates that, at that time, the panel found the RIF provision applicable to plaintiffs, whose status as salaried, supervisory employees was a matter of record in the first appeal. 2 Thus, in Mcll-ravy I, with the knowledge that plaintiffs were supervisory employees, this court decided that plaintiffs presented a genuine issue of material fact as to whether KMC breached the terms of the employment contract as set forth in the RIF provision.
Under the law of the case doctrine, there are several circumstances under which an issue may be implicitly resolved by a prior appeal: “(1) resolution of the issue was a necessary step in resolving the earlier appeal; (2) resolution of the issue would abrogate the prior decision and so must have been considered in the prior appeal; and (3) the issue is so closely related to the earlier appeal its resolution involves no additional consideration and so might have been resolved but unstated.”
Guidry v. Sheet Metal Workers Int'l Ass’n, Local No. 9,
Applying Guidry’s analysis to the present case, a determination as to the applicability of the RIF provision to appellees was “a necessary step” in the earlier panel’s decision,
Guidry,
In
Martinez v. Roscoe,
[t]he district court’s determination that plaintiffs were entitled to maintain this action was integral to the [issuance of the first] permanent injunction. [The appellants] did not appeal that order. Accordingly, [they] now are barred by the doctrine[ ] of ... law of the case from challenging [appellees’] ability to maintain this action. The district court’s [subsequent] permanent injunction is, therefore, affirmed.
Id. (citations omitted). The Martinez court thus refused, on the basis of the law of the case doctrine, to examine the merits of the questions, one explicitly and one implicitly, decided at a prior stage of the litigation.
Similarly, in the present case a prior panel of this court expressly settled the enforceability of the RIF provision in McIlravy I. The applicability of the RIF provision — a determination that the provision applied to plaintiffs as salaried, supervisory employees — was implicit in and “integral to” McIlravy J’s explicit holding. Id. Under our precedent in Martinez, we apply the law of the case doctrine to bar KMC’s claims.
B
We next ask whether KMC meets any of the three “exceptionally narrow” grounds for departure from the law of the case doctrine.
Alvarez,
Ill
KMC also claims that the district court should have granted its motion for judgment as a matter of law because the handbooks do not include procedures for final terminations during RIFs, but only for temporary “layoffs,” and appellees here were permanently “terminated” rather than “laid off.”
‘We review de novo the district court’s denial of a litigant’s motion for judgment as a matter of law filed pursuant to Fed.R.Civ.P. 50(b). We will reverse such a ruling only if the evidence points but one way and is susceptible to no reasonable inferences supporting the party opposing the motion.”
Kinser v. Gehl Co.,
*1038
In construing the parties’ contractual intent under Wyoming law, courts are required to give contractual terms their plain and ordinary meaning.
See Lines Ins. Co. v. Wyoming Coal Refining Sys., Inc.,
Because the term “layoff’ may denote either a permanent
or
temporary termination of employment, that term is ambiguous in the present case. We cannot say here that “the evidence points but one way and is susceptible to no reasonable inferences supporting” appellees’ position.
Kinser,
IV
The judgment of the district court is AFFIRMED.
Notes
. We note that the law of the case doctrine, not issue preclusion, is applicable to this case.
The doctrine of law of the case is similar to the issue preclusion prong of res judicata in that it limits relitigation of an issue once it has been decided. However, law of the case is concerned with the extent to which law applied in a decision at one stage of litigation becomes the governing principle in later stages of the same litigation. Res judicata does not speak to direct attacks in the same case, but rather has application in subsequent actions,
Rezzonico v. H & R Block, Inc.,
. For example, the district court, on the first page of its order granting in part and denying in part KMC's motion for summary judgment, stated that Mcllravy and his colleagues "worked their way up the employment ladder to
supervisory positions
which they held until they were terminated."
McIlravy v. Kerr-McGee Coal Corp.,
No. 93-CV-0302-B (D. Wyo. June 22, 1994) (emphasis added).
Mcll-ravy I
also stated that "[pjlaintiffs were at the bottom of the rankings for
supervisors
in their respective departments. The company retained some
supervisors
who had less seniority than the plaintiffs but who had better performance rankings.”
McIlravy I,
. Our application of the law of the case doctrine to implicitly decided issues is consistent with the law of our sister circuits.
See, e.g., Kansas Pub. Employees Retirement Sys. v. Blackwell, Sanders, Matheny, Weary & Lombardi, L.C.,
. Appellants cite the Wyoming Supreme Court’s recent decision in
Bouwens v. Centrilift,
