SELYA, Senior Circuit Judge.

This is an employment discrimination case in which three ousted employees challenge the district court's entry of summary judgment in favor of their quondam employer. After close perscrutation of a substantial record, we conclude (i) that we have jurisdiction over this appeal; (ii) that the lower court permissibly refused to consider the employees' counter-statement of material facts; (iii) that the employees knowingly and voluntarily released their claims (under both federal and local law) coincident with the termination of their employment; (iv) that those releases were valid, enforceable, not the product of coercion, and dispositive of the claims asserted by the employees here; and (v) that, in the absence of viable claims on the part of the employees, the derivative claims mounted by their spouses cannot stand. Accordingly, we affirm the entry of summary judgment.

I. BACKGROUND

Prior to 2003, plaintiffs-appellants Alejandro Cabán Hernández (Cabán), Peter Villano Bias (Villano), and José Colón Luna (Colón) toiled in Puerto Rico for defendant-appellee Philip Morris USA, Inc. During that year, Philip Morris undertook a corporate restructuring, the aim of which was to align its Puerto Rico operations more closely with its operations in the continental United States. As part and parcel of this reorganization, Philip Morris notified Cabán, Villano, and Colon (collectively, the appellants), early in 2004, that their positions were to be eliminated.

Philip Morris afforded the appellants an opportunity to interview for jobs within the restructured enterprise. But there was a rub: Spanish was the appellants' native tongue — among them, only Villano was fluent in English — and the new posts required an ability to communicate effectively in English.

In May of 2004, all three appellants participated in an English-language interview process. Cabán and Colón were not offered new positions. Villano received an offer but for a job that he deemed unsuitable. The employment of all three men with Philip Morris ended shortly thereafter. They did, however, elect to receive special severance benefits (a subject to which we shortly shall return).

In March of 2005, the appellants brought a civil action in Puerto Rico's federal district court. In their complaint, they alleged that Philip Morris had discriminated against them on the basis of their national origin, in violation of 42 U.S.C. §§ 2000e to 2000e-17 (Title VII) and P.R. Laws Ann. tit. 29, § 146 (Law 100). They claimed, among other things, that Philip Morris had fostered a work environment that was discriminatory, hostile, and harassing as to Spanish-speaking employees; that they had been trimmed from the payroll as a direct result of this discriminatory animus; and that the company had imposed the English-speaking requirement for the revamped positions as a means of ensuring their departures.

The appellants' wives joined in the suit. They brought claims under Article 1802 of the Civil Code, P.R. Laws Ann. tit. 31, § 5141, averring that Philip Morris's discriminatory actions toward their husbands had caused them (the wives) mental anguish and emotional distress.

Philip Morris denied the material allegations of the complaint and pleaded an affirmative defense of release. See Fed.R.Civ.P. 8(c). At the conclusion of discovery, it moved for summary judgment. See Fed.R.Civ.P. 56(c). In connection with that motion it submitted, as required by the district court's local rules, a statement of material facts not in dispute, adorned with record citations. See D.P.R.R. 56(b). Although the appellants seasonably opposed the motion, the district court determined that the counter-statement of facts upon which their opposition relied was not in conformity with the local rules. See D.P.R.R. 56(c). Consequently, the court deemed Philip Morris's statement of facts admitted. See D.P.R.R. 56(e).

In due course, the district court granted the summary judgment motion, concluding that the appellants had executed valid releases when they left their employment and that those releases barred the prosecution of the claims asserted in the complaint. This timely appeal ensued.

II. APPELLATE JURISDICTION

The appellants suggest for the first time in their reply brief that we lack jurisdiction over their appeal because the district court's grant of summary judgment did not finally dispose of all claims against all parties. Ordinary raise-or-waive rules do not apply with respect to claims that a court lacks subject matter jurisdiction. See, e.g., Am. Fiber Finishing, Inc. v. Tyco Healthcare Grp., 362 F.3d 136, 138-39 (1st Cir.2004); see also Espinal-Dominguez v. Puerto Rico, 352 F.3d 490, 495 (1st Cir.2003) (explaining that "[b]ecause federal courts are powerless to act in the absence of subject matter jurisdiction, [they] have an unflagging obligation to notice jurisdictional defects" whenever such defects come to their attention). Accordingly, we begin with the jurisdictional objection.

To put this objection into perspective, we must canvass the record. In their complaint, the appellants named what appeared to be two discrete corporations, Philip Morris USA, Inc. and Philip Morris-Puerto Rico, as defendants. Both were served but only the former answered the complaint and, later, moved for summary judgment.

Building on this foundation, the appellants posit that they are entitled to a default judgment against Philip Morris-Puerto Rico. See Fed.R.Civ.P. 55(a). They further posit that the existence of this loose end deprives us of appellate jurisdiction. See 28 U.S.C. § 1291; Fed.R.Civ.P. 54(b); see also Alstom Caribe, Inc. v. Geo. P. Reintjes Co., 484 F.3d 106, 111 (1st Cir.2007) (explaining that to be "final" and, thus, immediately appealable, a decision must be one that "ends the litigation on the merits and leaves nothing for the court to do but execute the judgment") (quoting Catlin v. United States, 324 U.S. 229, 233, 65 S.Ct. 631, 89 L.Ed. 911 (1945)).

This nascent jurisdictional objection does not survive scrutiny. The record reflects that, shortly after suit was commenced, the district court scheduled its initial case-management conference. See Fed.R.Civ.P. 16(b). In preparing for that conference, the parties stipulated that Philip Morris USA maintained a branch office in Puerto Rico and did business in Puerto Rico under the name "Philip Morris-Puerto Rico." The clear import of this stipulation was that Philip Morris-Puerto Rico was not a separate corporate entity but, rather, a division of Philip Morris USA.

The district court accepted this stipulation and, in subsequent orders, referred to the employer as "Philip Morris USA." Consistent with this understanding, the court, in granting summary judgment, noted that Philip Morris's Puerto Rico branch had been merged into Philip Morris USA several years before the occurrence of the events giving rise to this suit. See Cabán Hernández v. Philip Morris USA, Inc., No. 05-1284, slip op. at 10 (D.P.R. Apr. 27, 2006) (unpublished).

The parties' stipulation resolves the jurisdictional objection. Stipulations "eliminate the need for proving essentially uncontested facts," thus husbanding scarce judicial resources. Gomez v. Rivera Rodríguez, 344 F.3d 103, 120 (1st Cir.2003). Since stipulations are important to the efficient and expeditious progress of litigation in the federal courts, parties are encouraged to stipulate as to factual matters. See TI Fed. Credit Union v. DelBonis, 72 F.3d 921, 928 (1st Cir.1995). Once a party has entered into a stipulation, however, that party is not at liberty to renege unilaterally on a stipulated fact without leave of court, which ordinarily will not be granted absent a showing of good cause. See Am. Honda Motor Co. v. Richard Lundgren, Inc., 314 F.3d 17, 21 (1st Cir.2002); TI Fed. Credit Union, 72 F.3d at 928.

Here, the trial court correctly read the stipulation to mean that there was only one defendant. Cf. Gomez, 344 F.3d at 121 ("Determining the meaning and effect of a stipulation presents a question of law. . . ."). The appellants have shown nothing that would constitute good cause or otherwise justify relief from the stipulation. Certainly, the mere mention of the appellation "Philip Morris-Puerto Rico" in the corporate disclosure statement does not afford a basis for undoing the stipulation. The use of the name on the brief cover is even less informative: for aught that appears, the brief cover merely replicated the caption of the case as set out in the appellants' complaint. In all events, that loose language cannot be used as a wedge to split an organization that the parties have agreed is a single corporation into two separate corporate entities.

To cinch matters, it is evident that Philip Morris relied on the stipulation and, thus, did not file an answer to the complaint on behalf of Philip Morris-Puerto Rico. Under the circumstances, that reliance was both reasonable and detrimental. A party's detrimental reliance, reasonably undertaken, weighs heavily in the balance when the adverse party attempts to revoke a factual stipulation. See Am. Honda, 314 F.3d at 21. That weight grows even more ponderous when, as in this case, the revocation attempt is not made until after judgment has entered and the case is on appeal.

Having completed our canvass of the record, we conclude, without serious question, that the stipulation must be accorded full force and effect, That conclusion, in turn, ends the jurisdictional inquiry. Because the parties stipulated that Philip Morris-Puerto Rico is not an independent entity, the district court's entry of summary judgment in favor of Philip Morris USA, Inc. was a final order that disposed of all claims against all parties to the case. Accordingly, we have jurisdiction to entertain the appeal. See 28 U.S.C. § 1291; see also Alstom Caribe, 484 F.3d at 113.

III. THE MERITS

We turn now to the merits. Before addressing the district court's decision, we must plot the contours of the summary judgment record. Then, after limning the summary judgment standard, we test the viability of the appellants' statements of claim. At that stage, we divide our analysis into three segments, discussing separately the appellants' Title VII claims, their claims under Puerto Rico law, and their spouses' claims.

A. Summary Judgment Record.

The appellants assert that their counter-statement of material facts, submitted as part of their opposition to Philip Morris's summary judgment motion, should be considered an integral part of the summary judgment record. They base this assertion on a claim that the district court erred in finding the counter-statement noncompliant with the local rules. In pertinent part, those rules require a party opposing a motion for summary judgment to accept, deny, or qualify each entry in the movant's statement of material facts paragraph by paragraph and to support any denials, qualifications, or new assertions by particularized citations to the record. See D.P.R.R. 56(c).

What transpired below is not in dispute. The appellants submitted a timely opposition to the summary judgment motion, but their counter-statement of material facts did not conform to the requirements of the local rules. Consequently, the district court, in accordance with the provisions of Local Rule 56(e), deemed Philip Morris's statement unopposed and accepted its stated facts as true.

Before us, the appellants attempt to confess and avoid. They admit that they did not furnish specific record citations to support their version of the facts but they nonetheless argue that their submission of selected excerpts (rather than unexpurgated documents) minimized the hardship to the district court and, thus, constituted substantial compliance with the strictures of Local Rule 56. That argument gives short shrift to the interests at stake, and we reject it.

We repeatedly have emphasized the importance of local rules similar to Local Rule 56. Such rules were inaugurated in response to this court's abiding concern that, without them, "summary judgment practice could too easily become a game of cat-and-mouse." Ruiz Rivera v. Riley, 209 F.3d 24, 28 (1st Cir.2000). Such rules are designed to function as a means of "focusing a district court's attention on what is — and what is not — genuinely controverted." Calvi v. Knox County, 470 F.3d 422, 427 (1st Cir.2006). When complied with, they serve "to dispel the smokescreen behind which litigants with marginal or unwinnable cases often seek to hide [and] greatly reduce the possibility that the district court will fall victim to an ambush." Id.

Given the vital purpose that such rules serve, litigants ignore them at their peril. In the event that a party opposing summary judgment fails to act in accordance with the rigors that such a rule imposes, a district court is free, in the exercise of its sound discretion, to accept the moving party's facts as stated. See Cosme-Rosado v. Serrano-Rodriguez, 360 F.3d 42, 45 (1st Cir.2004); Ruiz Rivera, 209 F.3d at 28.

A review of the record in this case reveals that the district court acted justifiably in rebuffing the appellants' proffered counter-statement and crediting Philip Morris's version of the facts. To begin, the appellants did not admit, deny, or qualify Philip Morris's assertions of fact paragraph by paragraph as required by Local Rule 56(c). Instead, they submitted an alternate statement of facts in narrative form. This failing alone would have warranted a "deeming" order.

To make matters worse, the appellants did not adhere to the record citation requirement. Some assertions in the appellants' counter-statement were completely unsupported by any hint of a record citation. Numerous other "facts" memorialized in their counter-statement were supported only by general references to multiple exhibits (e.g., a reference to "Exhibits 1 through 6"), yet those exhibits — deposition transcripts and answers to interrogatories — collectively comprised hundreds of pages. This is far removed from compliance with the requirement that "[a]n assertion of fact . . . shall be followed by a citation to the specific page or paragraph of identified record material supporting the assertion," D.P.R.R. 56(e) (emphasis supplied), and leaves the district court to grope unaided for factual needles in a documentary haystack.

Rules like Local Rule 56 are meant to ease the district court's operose task and to prevent parties from unfairly shifting the burdens of litigation to the court. The appellants' submission contravened the local rule and, thus, thwarted this salutary purpose. Given this significant noncompliance, the district court did not abuse its discretion in deeming Philip Morris's statement of facts unopposed and crediting the factual assertions contained therein.

B. Summary Judgment Standard.

Orders granting summary judgment engender de novo review. Calvi 470 F.3d at 426. That review is confined to the record that was properly before the district court at the time of its decision. Mandel v. Boston Phoenix, Inc., 456 F.3d 198, 204 (1st Cir.2006). Here, then, our task is to determine whether the district court appropriately granted summary judgment based on the facts as set forth in Philip Morris's moving papers.

We will affirm the entry of summary judgment if — and only if — the facts as stated show beyond any legitimate question the movant's entitlement to judgment as a matter of law. See DePoutot v. Raffaelly, 424 F.3d 112, 117 (1st Cir.2005); see also Fed.R.Civ.P. 56(c). In marshaling the facts for this purpose, we must draw all reasonable inferences in the light most favorable to the nonmovant. See Calvi 470 F.3d at 426. That does not mean, however, that we ought to draw unreasonable inferences or credit bald assertions, empty conclusions, rank conjecture, or vitriolic invective. See Cadle Co. v. Hayes, 116 F.3d 957, 960 (1st Cir.1997); Medina-Muñoz v. R.J. Reynolds Tobacco Co., 896 F.2d 5, 8 (1st Cir.1990).

C. Title VII Claims.

Five years ago, we held squarely that rights conferred by Title VII, like many other rights created by federal statutory law, may be surrendered through the execution of a release. See Melanson v. Browning-Ferris Indus., Inc., 281 F.3d 272, 274 (1st Cir.2002). The waiver must, of course, be knowing and voluntary. Id. Because release is an affirmative defense, see Fed.R.Civ.P. 8(c), the burden rests with the releasee to establish that a particular release satisfies these criteria. See id. at 276; see also Rivera-Flores v. Bristol-Myers Squibb Carib., 112 F.3d 9, 12 (1st Cir.1997).

Conducting this inquiry requires the use of a wide-angled lens. We must, therefore, evaluate the totality of the circumstances in order to determine whether an employer has adequately demonstrated the knowing and voluntary character of an employee's asserted waiver. See Smart v. Gillette Co. Long-Term Disab. Plan, 70 F.3d 173, 181 (1st Cir.1995). We have mentioned certain factors that typically inform this inquiry. These include:

(1) the plaintiff's education, business experience, and sophistication; (2) the parties' respective roles in deciding the final terms of the arrangement; (3) the agreement's clarity; (4) the amount of time available to the plaintiff to study the agreement before acting on it; (5) whether the plaintiff had independent advice — such as the advice of counsel — when [signing] the agreement; and (6) the nature of the consideration tendered in exchange for the waiver.

Id. at 181 n. 3. This list, however, is intended to be illustrative rather than exhaustive. See id. at 181. As long as the circumstances viewed in the aggregate show that the waiver was knowing and voluntary, the employer need not establish that every factor cuts in its favor.

In this instance, a canvass of the six Smart factors shows, beyond hope of contradiction, that each appellant's waiver was knowing and voluntary. We explain briefly.

One Smart factor — the second — favors the appellants: Philip Morris unilaterally crafted the terms of the proposed settlement. That factor, however, is of only modest import here; it might have cut more sharply in the appellants' favor had there been evidence that they attempted to negotiate the terms of the release but were rebuffed. The summary judgment record, however, discloses no such evidence.

The first Smart factor strongly favors Philip Morris. Although the appellants' educational backgrounds vary, each of them has a high-school diploma and some educational instruction beyond the high-school level. Cabán worked for Philip Morris for over three decades; Colón worked there for nearly a quarter-century; and Villano, after spending almost a decade in a comparable position with another firm, worked approximately five years at Philip Morris. All three held responsible supervisory positions, and each applied for a new position that required substantial business acumen. Given the lack of any evidence to the contrary, a reasonable fact-finder scarcely could conclude either that the appellants were insufficiently sophisticated to waive their claims or that those waivers were the product of anything other than free will.

The third Smart factor also weighs heavily in the employer's favor. The releases, all of which were substantially similar, were crystal clear. Each release stated explicitly that the signer was waiving "any claims, known or unknown, promises, causes of action, or similar rights" against Philip Morris arising "under the guise of many different laws (including federal, state and local laws and statutes, executive orders, rules and regulations, other administrative guidelines, and Common Law legal doctrines)." This language hardly could have been more direct or to the point.

The fourth, fifth, and sixth Smart factors push in the same direction. The releases and other documents were furnished to the appellants both in English and Spanish. The company then gave the appellants a significant amount of time — forty-five days — within which to decide whether to sign the releases. The appellants were advised, both orally and in writing, of their right to consult with counsel before making a decision. This opportunity was not squandered; two of the appellants sent the document package (including the proffered release) to a lawyer before executing the release. The third appellant (Villano) spoke to an attorney before accepting the company's offer, but did not submit the critical documents for the attorney's perusal.

Each appellant elected to take the proffered consideration and signed a Spanish-language version of the release. The releases provided for a seven-day rescission period; that is, an employee who chose to execute a release had seven days from the date of execution within which to cancel it. None of the appellants exercised his right of rescission within the allotted time frame.

We add, moreover, that the consideration was substantial. In exchange for signing a release, an employee received a lump sum equal to three months' salary as well as other benefits (such as career transition services).

Notwithstanding these indicia of knowledge and volition, the appellants assert that the packages they received were confusing, as each package contained both a description of the severance benefits to which a discharged employee was automatically entitled as well as a description of the additional benefits that would inure to him should he opt to sign the proffered release. We agree that, in an ideal world, a severance package might well contain completely separate forms for accepting these two types of emoluments. But employers are required to provide fair notice to affected employees, not perfect notice. Here, when the entire package is taken into account, the appellants' argument falters.

The most important reason is that, in a subsection entitled "Description of the Increased Benefits for Eligible Employees," the paperwork informed each affected employee, clearly and conspicuously, that "[i]n addition to all of the benefits described above" — that is, in addition to the severance benefits to which he was entitled — he would, "if [he] sign[ed] the General Agreement and Release that [was] enclosed," receive the additional benefits enumerated in the materials. To reinforce this point, the materials expressly advised each affected employee that the receipt of severance benefits was not contingent on his execution of the release. In the circumstances of this case, these caveats satisfied the employer's obligation to give fair notice.

To say more about the releases themselves would be supererogatory. The Smart factors overwhelmingly favor a finding that the appellants knowingly and voluntarily executed the releases. That one of the six factors tends to favor the appellants is not enough to tip the summary judgment balance; the law is clear that no single factor is determinative in evaluating whether a waiver is knowing and voluntary. See Smart, 70 F.3d at 181. It is sufficient to sustain the validity of a release and the enforceability of its terms, at the summary judgment stage, that the relevant circumstances point unerringly toward that result.

The appellants have a fallback position. They asseverate that, notwithstanding the persuasive force of the Smart factors, a finding that they acted knowingly and voluntarily is precluded (or, at least, called into legitimate question) because they were coerced into signing the releases. In this regard, they complain that each of them "felt [he] had no other alternative but to sign the agreement and general release" due to the "pressure, rage, indignation, depression, demoralization and confused mental state [caused] by the hostile, discriminatory work environment" created by Philip Morris. Appellants' Br. at 44. To drive this point home, the appellants attempt to draw an analogy to situations in which an employer has made working conditions so unsavory that options given to employees become "nothing more than a charade." Vega v. Kodak Carib., Ltd., 3 F.3d 476, 480 (1st Cir.1993); see Young v. Sw. Savs. Loan Ass'n, 509 F.2d 140, 144 (5th Cir.1975).

These importunings comprise more cry than wool. The cases that the appellants cite to support their claim of coercion are, without exception, constructive discharge cases. In those instances, the employees claimed that they were choosing between further service under intolerable working conditions and resignation. See, e.g., Vega, 3 F.3d at 480. Here, however, there was no such Hobson's choice: the appellants already had been told of their impending loss of employment at the time they opted to waive their rights. Their choice was either to sign the proffered releases and receive extra benefits or to pursue legal action over the loss of their jobs. Either way, they would no longer be subject to the hostile work environment that they claim flourished at Philip Morris. So viewed, that hostile work environment, even if it existed, could not have played a legally significant role in the appellants' decisions to sign the proffered releases.

That ends this phase of the matter. For the reasons elucidated above, we find the case law upon which the appellants rely to be inapposite and their legal theory untenable. Accordingly, we reject their claim of coercion and hold that the district court appropriately granted summary judgment on the Title VII claims.

D. Law 100 Claims.

Because diversity jurisdiction is present here, see 28 U.S.C. § 1332(a), we also must consider the appellants' claims under Puerto Rico law. The basic premise under which diversity jurisdiction operates is straightforward: a federal court sitting in diversity is bound to apply state substantive law. See Erie R.R. Co. v. Tompkins, 304 U.S. 64, 78, 58 S.Ct. 817, 82 L.Ed. 1188 (1938); Alternative Sys. Concepts, Inc. v. Synopsys, Inc., 374 F.3d 23, 32 (1st Cir.2004). State contract law falls within this sphere. See, e.g., Pritzker v. Yari 42 F.3d 53, 65 (1st Cir.1994). Consequently, the effect of the releases on the appellants' Law 100 claims must be evaluated under substantive principles of Puerto Rico law.

As a general rule, "[r]ights granted by the laws [of Puerto Rico] may be renounced, provided such renunciation be not contrary to law, to public interest or public order, or prejudicial to the interest of a third person." P.R. Laws Ann. tit. 31, § 4; see Ponce Gas Serv. Corp. v. L.R.B., 4 P.R.R. 983, 987, 104 D.P.R. 698 (1976) ("Save when expressly prohibited or restricted by law, rights may be waived and compromised."). The appellants have not identified any provision of Puerto Rico's Civil Code, or any specific tenet of Puerto Rico's case law, that invalidates the releases or undercuts their efficacy. In point of fact, the Puerto Rico courts have explicitly given their imprimatur to releases of employment discrimination claims. See, e.g., Marte v. Pegasus Broad., No. KLAN0400915, 2005 WL 808310 (P.R. Cir.Feb. 15, 2005) (English translation unpublished). As a theoretical matter, then, a release of Law 100 claims is authorized under the law of Puerto Rico.

The fact that the appellants legally could have released their Law 100 claims does not mean that they did so here. The question reduces to whether the documents that they signed actually effected a release in accordance with Puerto Rico law. Interpreting Article 1709 of the Civil Code, P.R. Laws Ann. tit. 31, § 4821, the Puerto Rico Supreme Court has enumerated three requirements for the valid release or settlement of a claim: (i) an uncertain legal relationship, (ii) an intent to eliminate the uncertainty, and (iii) reciprocal concessions. See Citibank, N.A. v. Dependable Ins. Co., 21 P.R. Offic. Trans. 496, 506, 121 D.P.R. 503 (1988). The releases at issue here satisfy these requirements.

The ubiquity of litigation that surrounds the non-consensual termination of employment relationships bears powerful witness to the myriad uncertainties about legal rights and obligations incident to such terminations. The language of the releases signed by the appellants is unarguably intended to eliminate those uncertainties. And, finally, the parties made reciprocal concessions: each appellant agreed not to pursue any legal claims arising out of the failed employment relationship, while Philip Morris agreed to pay to each a substantial sum that it was not otherwise obligated to pay and to furnish ancillary services as well. Thus, the releases were valid settlements of the Law 100 claims.

To be sure, the appellants again argue that the releases are void because they "were deceived and induced into signing through mistake, deception and duress." Appellants' Br. at 49. This argument, which we found wanting when the appellants dubbed it "coercion" and raised it in connection with their Title VII claims, see supra Part III(C), has no more traction in connection with their Law 100 claims.

We need not tarry. Although the appellants correctly point out that Article 1217 of the Civil Code, P.R. Laws Ann. tit. 31, § 3404, renders consent to a settlement void when given "by error, . . . by intimidation, or deceit," Puerto Rico law presumes good faith in negotiations. See Citibank, 21 P.R. Offic. Trans, at 512, 121 D.P.R. 503. Wrongdoing or bad faith is never assumed but, rather, must be proved affirmatively by the party who challenges an agreement based on an absence of consent. See id. And when examining efforts to invalidate consent, Puerto Rico courts consider the education, social background, economic status, and business experience of the challenger. See Miranda Soto v. Mena Eró, 9 P.R. Offic. Trans. 628, 634, 109 D.P.R. 473 (1980).

In this instance, the appellants are reasonably well-educated, experienced individuals, all of whom have held responsible positions in the private sector. Tellingly, they have presented no significantly probative evidence of deception, duress, objectively reasonable error, or other circumstances sufficient to trigger Article 1217. Put bluntly, this record compels a finding that the appellants knowingly and voluntarily consented to releasing their employment-related claims (including their Law 100 claims).

E. Spousal Claims.

The final argument advanced in this appeal relates to negligence claims propounded by the appellants' spouses under Article 1802, P.R. Laws Ann. tit. 31, § 5141. The spouses (who also are appellants in this court) note that they never signed releases. Based on this premise, they contend that their claims for damages should not be barred.

Though ingenious, this contention is without merit. Under Puerto Rico law, close relatives of one who has suffered the slings and arrows of employment discrimination may invoke Article 1802 as a vehicle for prosecuting a cause of action. See Santini Rivera v. Serv. Air, Inc., 137 D.P.R. 1 (1994). But such a cause of action is wholly derivative and, thus, its viability is contingent upon the viability of the underlying employment discrimination claim. See Marcano-Rivera v. Pueblo Int'l Inc., 232 F.3d 245, 258 n. 7 (1st Cir.2000); Baralt v. Nationwide Mut. Ins. Co., 183 F.Supp.2d 486, 488 (D.P.R.2002) (citing the court's own translation of Maldonado Rodríguez v. Banco Cent. Corp., 138 D.P.R. 268 (1995)). Because the district court appropriately granted summary judgment on the underlying claims, see supra Parts III(C)-(D), the spouses' derivative claims cannot succeed.

IV. CONCLUSION

We need go no further. The short of it is that this appeal is properly before us. Upon review, we conclude that the appropriately configured summary judgment record makes manifest that the appellants signed clear and unequivocal releases of all claims against Philip Morris — and did so after having been afforded fair notice, ample time to consider their options, and an opportunity to consult with counsel. The district court determined that those valid and enforceable releases, for which the appellants received substantial consideration, barred their attempt to assert employment-related causes of action against Philip Morris, whether under federal or Puerto Rico law. That determination was legally correct, as was the district court's concomitant grant of summary judgment on the claims asserted by the appellants' spouses.

Affirmed.