
    Deborah HANSLER, Appellant v. LEHIGH VALLEY HOSPITAL NETWORK.
    No. 14-1772.
    United States Court of Appeals, Third Circuit.
    Argued on Jan. 13, 2015.
    Filed: Aug. 19, 2015.
    
      Samuel A. Dion, Esq., Argued, Dion & Goldberger, Philadelphia, PA, Counsel for Appellant.
    Darren M. Creasy, Esq. Karyn Dobroskey Rienzi, Esq., A. James Johnston, Esq. Andrea M. Kirshenbaum, Esq., Argued, Post & Schnell, Philadelphia, PA, Glenn Guanowsky, Esq., Lehigh Valley Hospital Department of Legal Services, Allentown, PA, Counsel for Appellee.
    Before: AMBRO, FUENTES, and ROTH, Circuit Judges.
   SUR PETITION FOR PANEL REHEARING

The petition for rehearing filed by appellee Lehigh Valley Hospital Network in the above-entitled case having been submitted to the judges who participated in the decision of this Court, it is hereby ORDERED that the petition for rehearing by the panel is granted. The opinion and judgment entered June 22, 2015 are hereby VACATED.

OPINION

FUENTES, Circuit Judge.

Deborah Hansler requested intermittent leave from her former employer, Lehigh Valley Health Network (“Lehigh Valley”), under the Family Medical Leave Act of 1993 (“FMLA” or the “Act”), 29 U.S.C. § 2601 et seq. Specifically, Hansler submitted a medical certification requesting leave for two days a week for approximately one month. As alleged in the complaint, the medical certification refers to the length of her requested leave but not the nature or duration of her condition. A few weeks later, after she took several days off work, Lehigh Valley terminated Hansler’s employment without seeking any clarification about her medical certification, as required by law. Lehigh Valley cited excessive absences and informed her that the request for leave had been denied. Hansler sued Lehigh Valley for violations of the Medical Leave Act, and the District Court dismissed the complaint on the basis that the medical certification supporting Hansler’s request for leave was “invalid.” We conclude that, by alleging that Lehigh Valley terminated her instead of affording her a chance to cure any deficiencies in her medical certification, Hansler has stated a claim that Lehigh Valley violated the Medical Leave Act. Accordingly, we reverse and remand for further proceedings.

I.

Hansler was hired by Lehigh Valley in 2011 to work as a technical partner. In early March 2013, Hansler began experiencing shortness of breath, nausea, and vomiting. At the time, the cause of these symptoms was unknown. On March 13, Hansler’s physician completed a medical certification form “requesting intermittent leave at a frequency of 2 times weekly starting on March 1, 2013 and lasting for a probable duration of one month- or until about April 1, 2013.” App. 44. Hansler submitted the certification to Lehigh Valley as part of a formal request for leave under the Medical Leave Act. As a result of her condition, Hansler was unable to work on March 13, 14, 23, 24, and 25.

Without seeking further information about the medical certification from either Hansler or her physician, Lehigh Valley terminated Hansler at the end of her shift on March 28. The basis for Hansler’s termination was absenteeism, including the five days she took off in March. Hansler reminded Lehigh Valley that she had requested time off under the Medical Leave Act, but Lehigh Valley informed her, for the first time, that her request had been denied. Following the last of her absences, Hansler learned of a letter dated March 26 explaining that her request for “leave of absence (FMLA) for the period of 3/1/13-3/11/13” was denied because her “condition presently does not qualify as a serious health condition under the criteria set forth by the [Medical Leave Act].” App. 45. In early April 2013, after her dismissal, Hansler received a diagnosis of diabetes and high blood pressure. She alleges that these previously undiagnosed and untreated conditions are what caused her March absences.

Hansler sued Lehigh Valley under the Medical Leave Act for interfering with her substantive rights to medical leave and for terminating her in retaliation for seeking leave; In her complaint, Hansler alleges she has chronic serious health conditions and argues that Lehigh Valley improperly denied her request for leave without providing her an opportunity to cure her medical certification. The District Court granted Lehigh Valley’s motion to dismiss for failure to state a claim. It concluded that Hansler’s request for leave was defective because her medical certification indicated that her condition would last only one month, but the Medical Leave Act requires that a chronic serious health condition persist for an “extended period of time.” The District Court held that because the certification showed that Hansler was not entitled to leave, Lehigh Valley was not required to afford Hansler a cure period and was permitted to terminate Hansler for her subsequent absences. That Hansler was later diagnosed with diabetes and high blood pressure was of no consequence. According to the Court, “[a]lthough the timing of events for plaintiff was, without question unfortunate, the fact remains that her diagnosis with diabetes and high blood pressure did not occur until after her leave request was denied and she was fired by defendant.” Hansler v. Lehigh Valley Health Network, No. 13-cv-03924, 2014 WL 1281132, at *10 (E.D.Pa. Mar. 28, 2014). Hansler filed this appeal.

II.

Congress passed the Medical Leave Act “to balance the demands of the workplace with the needs of families” and “to entitle employees to take reasonable leave for medical reasons.” 29 U.S.C. § 2601(b), The Medical Leave Act carries out these objectives by providing that eligible employees are entitled to 12 workweeks of leave during any 12-month period if the employee has a “serious health condition” that makes the employee unable to perform the functions of her position. Id. § 2612(a)(1)(D). After a worker returns from leave, the worker is entitled to be reinstated to her previous position or an equivalent one. Id. § 2614(a)(1).

A “serious health condition” is one that involves inpatient care in a hospital or “continuing treatment by a health care provider.” Id. § 2611(11). In its implementing regulations, the Department of Labor defines “[c]ontinuing treatment by a health care provider” to include “chronic serious health condition[s]” that (i) “[r]e-quire[ ] periodic visits (defined as at least twice a year) for treatment by a health care provider,” (ii) “[c]ontinue[ ] over an extended period of time,” and (iii) “[m]ay cause episodic rather than a continuing period of incapacity (e.g., asthma, diabetes, epilepsy, etc.).” 29 C.F.R. § 825.102.

Prior to taking leave, an employee must give her employer notice of the request for leave, “statpng] a qualifying reason for the needed leave.” Id. § 825.301(b). An employer may require its employees to support their requests for leave with a certification issued by a health care provider. 29 U.S.C. § 2613(a). A “sufficient” medical certification must state (1) the date on which the serious health condition began, (2) the probable duration of the condition, (3) relevant medical facts, (4) a statement that the employee is unable to perform the functions of her position, (5) the dates and duration of any planned medical treatment, and (6) the expected duration of the intermittent leave. Id. § 2613(b).

Significantly, the Department of Labor’s regulations govern how employers are to respond to perceived deficiencies in employee notices generally, and in medical certifications in particular. While an employee seeking FMLA leave must “state a qualifying reason for the needed leave” and fulfill notice requirements, the employee “does not- need to expressly assert rights under the Act or even mention the FMLA.” 29 C.F.R. § 825.301(b). Instead, in “any circumstance where the employer does not have sufficient information about the reason for an employee’s use of leave, the employer should inquire further of the employee ... to ascertain whether leave is potentially FMLA-quálifying.” Id. § 825.301(a). In addition, an employer “shall advise an employee whenever the employer finds a certification incomplete or insufficient, and shall state in writing what additional information is necessary to make the certification complete and sufficient.” Id. § 825.305(c). A certification is “incomplete” if the “employer receives a certification, but one or more of the applicable entries have not been completed.” Id. A certification is “insufficient” if the “employer receives a complete certification, but the information provided is vague, ambiguous, or non-responsive.” Id. If the employer determines that a certification is either incomplete or insufficient, it may deny the requested leave on the basis of an inadequate certification. But it may only do so if it has “provide[d] the employee with seven calendar days (unless not practicable under the particular circumstances despite the employee’s diligent good faith efforts) to cure any such deficiency.” Id.; see Hansen v. Fincantieri Marine Grp., LLC, 763 F.3d 832, 837 (7th Cir.2014) (“[T]he regulations do not authorize the employer to deny FMLA leave where the employee fails to provide a complete and sufficient certification but is not given the opportunity to cure the deficiency.”).

A.

Hansler’s first claim is that Le-high Valley interfered with her rights under the Medical Leave Act by failing to afford her a chance to cure deficiencies in her medical certification. This claim is based on statutory text providing that employers may not “interfere with, restrain, or deny the exercise of or attempt to exercise” rights granted under the Act. 29 U.S.C. § 2615(a)(1). Moreover, “[a]ny violations of the Act or of these regulations constitute interfering with” the exercise of an employee’s rights. 29 C.F.R. § 825.220(b). To assert an interference claim, an employee must establish, among other things,, that she was denied benefits under the Act. Ross v. Gilhuly, 755 F.3d 185, 191-92 (3d Cir.2014).

The District Court held that Hansler was not entitled to leave or a cure period because her certification was “invalid” and “negative on its face.” The Court reasoned that while Hansler’s certification requested leave for one month, this was not an “extended period of time,” and, therefore, her condition did not qualify as a chronic serious health condition. In other words, her certification was not merely insufficient or incomplete — it demonstrated that she did not have a chronic serious health condition.

Hansler does not argue on appeal that her certification established the “extended period of time” requirement, and we do not decide that issue here. Instead, Hansler maintains she was entitled to the cure period set forth in the regulations because the certification was insufficient, rather than negative on its face. We agree.

The regulations make no reference to negative certifications, the basis on which the District Court rejected Hansler’s claim. Instead, they provide that whenever an employer finds a certification “incomplete” or “insufficient,” the employer shall so advise the employee and provide seven days to cure the deficiencies. 29 C.F.R. § 825.305(c). A negative certification is a judicially crafted concept with roots in a decision from the Seventh Circuit Court of Appeals. See Stoops v. One Call Commc’ns, Inc., 141 F.3d 309 (7th Cir.1998). In Stoops, the employee’s physician provided a medical certification stating that the employee was “not presently incapacitated and would not have to work intermittently or on a reduced work schedule.” Id. at 311. The Seventh Circuit described this as a “negative certification” because a serious health condition is one that prevents an employee from performing his job, but the employee’s physician in Stoops explicitly stated that the employee could perform his job functions. Id. at 312-13. ‘Where an employer ... requests from the employee and receives a physician’s certification that indicates that an employee’s serious health condition does not require him to miss work, the employer may rely on that certification.” Id. at 313.

Following Stoops, several other Courts of Appeals have discussed or alluded to negative certifications. In Hoffman v. Professional Med Team, the employee, like the one in Stoops, submitted a certification from a physician stating she would not need to work intermittently or on a less-than-full schedule as a result of her condition. Hoffman, 394 F.3d 414, 416 (6th Cir.2005). The Sixth Circuit explained that, “[t]o be valid, a certification must show that the employee’s serious health condition makes her unable to perform job functions.” Id. at 419. In Branham v. Gannett Satellite Information Network, Inc., the Sixth Circuit referred to a negative certification as one “indicating that [the employee] does not have a serious health condition that prevents her from performing her job.” 619 F.3d 563, 572 (6th Cir.2010). Similarly, the First Circuit found that an employer was justified in denying leave where the medical certification stated that the employee was “not incapacitated” and “disavowed the need for any leave.” Tayag v. Lahey Clinic Hosp., Inc., 632 F.3d 788, 793 (1st Cir. 011).

We need not decide whether in certain circumstances a medical certification may be negative because, even if we were to agree with the cases finding negative certifications, we still would not find those cases persuasive here. The certifications in those cases contained affirmative statements from the employees’ physicians that the employees would not miss any work. To qualify for FMLA leave, however, an employee must have a “serious health condition,” defined as a physical or mental condition involving either inpatient care or continuing treatment involving a period of incapacity or treatment for incapacity. 29 U.S.C. §§ 2611(11), 2612(a)(1)(D); 29 C.F.R. § 825.102. Thus, the certifications in those cases were facially incompatible with entitlement to FMLA leave.

In contrast, the certification here— which requested “intermittent leave at a frequency of 2 times weekly ... and lasting for a probable duration of one month,” App. 44 — did not on its face disqualify Hansler from FMLA eligibility. Rather, because a “sufficient certification” for intermittent leave under 29 U.S.C. § 2613(b) must address both “the expected duration of the intermittent leave” and the “probable duration of the condition,” and because the certification here failed to specify whether the “probable duration of one month” referred to the duration of the leave request, the duration of the medical condition, or both, the certification was not a “negative certification,” but was instead “vague, ambiguous, or non-responsive,” meeting the definition of “insufficient.” 29 C.F.R. § 825.305(c); see Kauffman v. Fed. Express Corp., 426 F.3d 880, 886-87 (7th Cir.2005) (rejecting argument that certification was negative where physician omitted the incapacity’s expected duration).

In short, we hold today simply that when a certification submitted by an employee is “vague, ambiguous, or non-responsive” (or “incomplete,” for that matter) as to any of the categories of information required under 29 U.S.C. § 2613(b), the employer “shall advise [the] employee ... what additional information is necessary to make the certification complete and sufficient” and “must provide the employee with seven calendar days ... to cure any such deficiency.” 29 C.F.R. § 825.305(c). The plain and mandatory language of the statute and regulations requires no less.

Lehigh Valley’s additional arguments in support of a negative certification are unavailing. It emphasizes that the Medical Leave Act is not a forward-looking statute and “does not require an employer to be clairvoyant.” Lichtenstein v. Univ. of Pittsburgh Med. Ctr., 691 F.3d 294, 303 (3d Cir.2012) (internal citations and quotation marks omitted). According to Lehigh Valley, the short duration of Hansler’s symptoms prior to her leave request provided no basis for it to know that Hansler was suffering from a prolonged and chronic illness. This argument would carry more force if the issue at stake was notice. See Ross, 755 F.3d at 191-92 (explaining that to state a claim for interference, a plaintiff must give notice to the defendant of his or her intention to take leave). But no one disputes notice; Hansler provided Lehigh Valley with a certification specifically requesting leave under the Act. Thus, nothing in this opinion burdens employers with the troublesome task of predicting, on their own, the nature and trajectory of their employees’ illnesses. The relevant question here is not whether Lehigh Valley could have known Hansler was suffering from a chronic condition at the time she requested leave; instead, it is whether the certification was insufficient and/or incomplete. Receipt of an insufficient or incomplete certification triggers certain regulatory obligations on an employer that are unrelated to its understanding of the employee’s health condition.

Similarly, Lehigh Valley maintains that Hansler’s post-termination diagnoses of diabetes and high blood pressure foreclose her ability to establish that she had a chronic serious health condition at the time she requested leave. See Navarro v. Pfizer Corp., 261 F.3d 90, 96 (1st Cir.2001) (explaining that operative time for determining whether a particular condition qualifies as a serious health condition is the time that leave is requested or taken). Again, this misses the point. That Hansler was diagnosed with her illnesses after she was fired does not affect the determination of whether her medical certification was insufficient.

Having concluded that Hansler plausibly alleges her certification was insufficient rather than negative, the next question is whether she states a claim for interference under the Act. Upon receipt of her insufficient certification, Lehigh Valley was required to (1) advise Hansler that her certification was insufficient, (2) state in writing what additional information was necessary to make it sufficient, and (3) provide her with an opportunity to cure before denying her request for leave. See 29 C.F.R. § 825.305(c). Lehigh Valley ignored these requirements and, instead, terminated Hansler without first notifying her that the request for leave had been denied. Assuming that she can prove she was denied benefits to which she was otherwise entitled, Hansler may premise her interference claim on these alleged regulatory violations.

Though our Court has not yet ruled on this issue, several district courts in this circuit have found interference claims following an employer’s breach of its obligations under § 825.305 where the employee established entitlement or likely entitlement to FMLA benefits. The few relevant decisions from the Courts of Appeals suggest that qualifying employees who allege harm arising from the employers’ failure to provide a cure period may assert a cause of action for interference. See Kauffman, 426 F.3d at 886-87; Darst v. Interstate Brands Corp., 512 F.3d 903, 910 (7th Cir.2008); Sorrell v. Rinker Materials Corp., 395 F.3d 332, 337 (6th Cir.2005).

Moreover, we find support for an interference claim based on this Court’s precedent concerning notice interference. In Conoshenti v. Public Service Electric & Gas Co., the -plaintiffs claim was based on his employer failing to advise him of his substantive rights under the Act in violation of regulatory requirements. 364 F.3d 135, 142 (3d Cir.2004). The plaintiff there insisted that, if he had received the necessary information, “he would have been able to make an informed decision about structuring his leave and would have structured it, and his plan of recovery, in such a way as to preserve the job protection afforded by the Act.” Id. at 142^43. We held this was a viable theory of recovery, explaining that the plaintiff “will show an interference with his right to leave under the FMLA ... if he is able to establish that this failure to advise rendered him unable to exercise that right in a meaningful way, thereby causing injury.” Id. at 143. Put another way, we found a cause of action for notice interference in the event plaintiff was able to show prejudice as a result of the violation. Id. at 144; see also Ruder v. Pequea Valley Sch. Dist., 790 F.Supp.2d 377, 394 (E.D.Pa.2011) (finding interference claim where the defendant’s failure to advise plaintiff of his eligibility to take leave “rendered him unable to exercise his rights”); Schaar v. Lehigh Valley Health Servs., Inc., 732 F.Supp.2d 490, 496-97 (E.D.Pa.2010) (finding interference claim where plaintiff alleged that “had she been informed that FMLA was an option for her absence, she would have taken her absence as FMLA leave”).

The logic of Conoshenti naturally extends to an employer’s failure to comply with its regulatory obligations following receipt of an insufficient or incomplete medical certification. Just like employers must advise their employees of their rights under the Act, 29 C.F.R. § 825.300, they also must advise their employees of deficiencies in their medical certifications and provide them with an opportunity to cure, id. § 825.305(c). These modest burdens imposed on employers help ensure that employees are equipped with at least basic information about the Act’s requirements and have an opportunity to exercise their rights in a meaningful way. And to encourage employer compliance, the regulations provide injured employees with a cause of action for interference. See 29 C.F.R. § 825.220(b) (“Any violations of the Act or of these regulations constitute interfering with, restraining, or denying the exercise of rights provided by the Act.”). If we were to find otherwise, employees would be left without a remedy.

Based on the facts alleged in the complaint, we conclude that Hansler states a claim for interference under 29 U.S.C. § 2615(a)(1). She alleges that, in violation of the regulations, Lehigh Valley failed to identify deficiencies in her medical certification and failed to provide her with an opportunity to cure. Hansler alleges she was prejudiced by these failures because, “[h]ad [Lehigh Valley] properly requested that [her] physician provide more information to show a serious health condition, [her] physician would have been [in] a position to provide the full diagnosis of [her] chronic health conditions.” App. 45. Instead of having the chance to exercise her rights in a meaningful way and demonstrate her entitlement to leave, Lehigh Valley fired her. As such, Hansler sufficiently alleges she was prejudiced as a result of Lehigh Valley’s regulatory violations. Indeed, Lehigh Valley does not appear to dispute a finding of prejudice, instead focusing its efforts on arguing that Hansler was not entitled to a cure period in the first instance — an argument we have rejected. Appellee Br. at 8 (“While it may be true that, had Hansler been given more time, she would have been able to offer additional information, this simply is not relevant to whether Hansler was entitled, under the FMLA regulations, to a cure period.”).

Not only is our conclusion dictated by precedent as well as the statutory and regulatory text, but we believe the cure period makes abundant sense in this context. Faced with nascent symptoms from a yet-to-be diagnosed condition, an employee’s physician may need some additional time to provide the required elements of a sufficient certification, including more specific information regarding relevant medical facts and the probable duration of the condition, the planned medical treatment, and the intermittent leave. 29 U.S.C. § 2613(b). As this case illustrates, for an employee with an emerging condition, the difference between a medical certification that supports leave and one that is deficient might be a matter of days.

B.

Hansler’s second claim is that Le-high Valley terminated her in retaliation for seeking leave. Retaliation claims arise out of the Medical Leave Act’s prohibition on employers “discharging] or in any other manner discriminating] against any individual for opposing any practice made unlawful.” 29 U.S.C. § 2615(a)(2); see 29 C.F.R. § 825.220(c) (prohibiting employers from “discriminating or retaliating against an employee or prospective employee for having exercised or attempting] to exercise FMLA rights”). To state such a claim, Hansler must allege (1) she invoked her right to leave, (2) she suffered an adverse employment decision, and (3) the adverse action was causally related to her invocation of rights. See Lichtenstein, 691 F.3d at 301-02.

The District Court dismissed Hansler’s retaliation claim, finding she did not make a “valid” request for leave. This conclusion flowed from our holding that “firing an employee for a valid request for FMLA leave may constitute interference with the employee’s FMLA rights as well as retaliation against the employee.” Erdman v. Nationwide Ins. Co., 582 F.3d 500, 509 (3d Cir.2009). The District Court reasoned that because her leave request was “premised upon the existence of a serious chronic health condition and her medical certification was a negative certification with respect to such a condition, [Hansler’s] leave request was not a valid request entitling her to FMLA leave and, accordingly, may not form the basis for an FMLA retaliation claim.” Hansler, 2014 WL 1281132, at *13.

As we disagree with the underpinnings of this conclusion — i. e., the certification was negative and Hansler was not entitled to benefits under the Act — we hold that Hansler’s claim should not be dismissed at this stage. Hansler alleges she attempted to invoke her right to leave, she was not advised of deficiencies in her medical certification, she was not provided a cure period, and she was fired a few weeks later as a result of her leave request. Through discovery, Hansler might be able to show that Lehigh Valley had a retaliatory motive and that the stated reason for termination was pretextual. See Lupyan v. Corinthian Colls., Inc.; 761 F.3d 314, 325-26 (3d Cir.2014); Lichtenstein, 691 F.3d at 309-10.

III.

For the foregoing reasons, we reverse the order of the District Court and remand for further proceedings consistent with this opinion. 
      
       As the merits panel has vacated the prior opinion and judgment, action is not required by the en banc court.
     
      
      . The case name incorrectly refers to Lehigh Valley Health Network as Lehigh Valley Hospital Network.
     
      
      . The District Court had jurisdiction under 28 U.S.C. § 1331, and we have jurisdiction to review the District Court's final order under 28 U.S.C. § 1291. We exercise plenary review over a district court’s grant of a motion to dismiss under Federal Rule of Civil Procedure 12(b)(6). Pearson v. Sec’y Dep't of Corr., 775 F.3d 598, 601 (3d Cir.2015). To survive a motion to dismiss under Rule 12(b)(6), a plaintiff must allege "enough facts to state a claim to relief that is plausible on its face.” Bell Atl. Corp. v. Twombly, 550 U.S. 544, 570, 127 S.Ct. 1955, 167 L.Ed.2d 929 (2007). A court must accept all factual allegations in the complaint as true and draw all reasonable inferences in favor of the plaintiff. Phillips v. Cnty. of Allegheny, 515 F.3d 224, 231 (3d Cir.2008).
     
      
      . A . chronic serious health condition is one that, among other things, "[c]ontinues over an extended period of time.” 29 C.F.R. § 825.102. Neither the Act nor the regulations provide further clarity as to what "extended period of time” means. We have found that a three-year duration for an employee’s condition constitutes an extended period of time. See Victorelli v. Shadyside Hosp., 128 F.3d 184, 189 (3d Cir.1997). Other courts have held that chronic illnesses “must exist for well more than a few weeks.” Taylor v. Autozoners, LLC, 706 F.Supp.2d 843, 852 (W.D.Tenn. 2010) (quoting Flanagan v. Keller Prods., Inc., No. 00-542-M, 2002 WL 313138, at *7 (D.N.H. Feb. 25, 2002)). We will assume here, and Hansler does not argue otherwise, that a condition lasting for one month does not satisfy the "extended period of time” requirement.
     
      
      . Lehigh Valley maintains that Hansler waived her argument concerning a distinction between the length of the requested leave and the expected duration of her condition by not raising it before the District Court. See Brennan v. Norton, 350 F.3d 399, 415 n. 12 (3d Cir.2003). We disagree. Although Hansler did not mention this nuance in 29 U.S.C. § 2613(b), she did argue generally, with a supporting case and citations to regulations, that her certification was insufficient and that Lehigh Valley should have given her a.chance to cure. Accordingly, Hansler has preserved the issue for appeal.
     
      
      . See Patel v. Saint Vincent Health Ctr., No. 12-298, 2015 WL 630260, at *13 (W.D.Pa., Feb. 12, 2015) ("[Employer] interfered with Plaintiff's FMLA rights by not informing her that the certification submitted by [the physician] was incomplete and insufficient.”); Herco v. Se. Pa. Transp. Auth., No. 10-796, 2011 WL 294493, at *3 (E.D.Pa. Jan. 25, 2011) (finding interference claim based on employee’s submission of an incomplete medical certification and employer’s failure to request additional information); Marrero v. Camden Cnty. Bd. of Soc. Servs., 164 F.Supp.2d 455, 466 (D.N.J.2001) (”[T]ermination is not an appropriate response for an inadequate certification. (The regulations] providef ] that where an employer finds a certification incomplete, it must give the employee a reasonable opportunity to cure any deficiencies.”).
     
      
      . The regulations contain a number of provisions requiring employers to provide employees with notice of their rights and obligations. See generally 29 C.F.R. § 825.300. For example, an employer covered by the Act must include a notice in its employee handbooks explaining benefits and leave rights. Id. § 825.300(a)(3).
     
      
      . The sine qua non of eligibility for leave is not a diagnosis, but a qualifying health condition to which a physician may attest by providing the specified categories of information, such as "appropriate medical facts ... regarding the condition,” the "probable duration of the condition,” and, where intermittent leave is requested, "the expected duration of the intermittent leave.” 29 U.S.C. § 2613(b). Where a certification is incomplete or insufficient as to any one of the categories, nothing in the statute or the implementing regulations prevents the cure period from functioning as a grace period for the employee to obtain such information; on the contrary, they compel it. See 29 C.F.R. § 825.305(c). And if the employee happens to learn the name of her condition in the interim, that may well provide additional support for her request, but it surely does not negate the validity of the grace period.
     