This case calls upon us to resolve whether the district court properly dismissed Clay Monroe’s wrongful discharge claims, which he brought pursuant to the Federal Employers Liability Act (“FELA”) and Illinois public policy. We agree with the district court that it lacked subject matter jurisdiction to adjudicate Monroe’s claims as they were preempted by the Railway Labor Act (“RLA”). Thus, we affirm the dismissal of Monroe’s action.
I. History
Clay Monroe worked for thirteen years as a brakeman for the Missouri Pacific Railroad and the Union Pacific Railroad (collectively, “the Railroad”). Monroe was injured at work on July 20,1992, and his doctor advised him to take a medical leave of absence. In October of that year, the Railroad hired a private investigator to conduct surveillance on Monroe as he had not yet returned to work due to his alleged injuries and physical incapacity. The Railroad’s investigators discovered that Monroe was working at his father’s business, where he was selling and installing satellite television systems. At one point, the investigators ordered a satellite dish from Monroe while posing as homeowners and then videotaped Monroe while he helped install the dish. In December 1992, Monroe’s doctor permitted him to return to work for the Railroad.
The Railroad subsequently commenced a collective bargaining agreement (“CBA”) hearing regarding the propriety of Monroe’s conduct while on medical leave. Evidence at the hearing included the videotape of Monroe installing the satellite system, as well as testimony from a doctor who opined that Monroe could do physical railroad work. This doctor, however, neither spoke with Monroe nor physically examined him. On December 17,1992, the Railroad discharged Monroe for misrepresenting his physical condition.
Monroe subsequently filed four separate legal proceedings against the Railroad challenging his dismissal: 1) he filed a CBA labor grievance based on his alleged wrongful termination1; 2) he brought a civil suit in the Madison County Circuit Court (Illinois) based on the Railroad’s private investigation of him, including claims of fraud, conspiracy, and similar torts; 3) he filed another civil suit in the St. Louis Circuit Court (Missouri) pursuant to the FELA, seeking damages for the personal injuries he sustained on July 20, 1992; and 4) he brought the present action.
*516The case before us involves a three-count complaint that Monroe filed on March 19, 1996 in the Circuit Court of Marion County, Illinois. Count I attempts to state a claim under the FELA, 45 U.S.C. § 55, alleging that the Railroad wrongfully discharged Monroe in an attempt to defeat any personal injury claims Monroe might have against the Railroad under the FELA. Count II asserts that the Railroad’s wrongful discharge of Monroe violated Illinois public policy because it attempted to prevent Monroe from fully exercising his right to collect damages for his work-related injuries. Count III claims that the Railroad’s alleged misconduct was willful and wanton, and is essentially a prayer for punitive damages.
The Railroad removed the ease to the United States District Court for the Southern District of Illinois on April 26, 1996, and it filed a Motion to Dismiss based on the federal court’s lack of subject matter jurisdiction (Fed.R.Civ.P. 12(b)(1)) and Monroe’s failure to state a claim upon which relief could be granted (Fed.R.Civ.P. 12(b)(6)). On July 9, 1996, the district court granted the Railroad’s motion to dismiss based on lack of subject matter jurisdiction, finding that the RLA preempted Monroe’s FELA and Illinois public policy claims.
II. Analysis
We must decide whether the district court correctly found that the RLA preempts Monroe’s wrongful discharge claims under the FELA and under Illinois public policy. We review de novo a district court’s grant of a motion to dismiss for subject matter jurisdiction. Underwood v. Venango River Corp., 995 F.2d 677, 679 (7th Cir.1993), overruled on other grounds, Westbrook v. Sky Chefs, Inc., 35 F.3d 316 (7th Cir.1994).
Whether a federal law preempts another law that establishes a cause of action is a question of congressional intent. Hawaiian Airlines, Inc. v. Norris, 512 U.S. 246, 251-52, 114 S.Ct. 2239, 2243, 129 L.Ed.2d 203 (1994). The arguably preemptive federal law in this case — the RLA-provides a comprehensive framework for resolving labor disputes, including a mandatory arbitral mechanism for “the prompt and orderly settlement” of two classes of disputes. Id.; see 45 U.S.C. § 151a; Atchison, Topeka & Santa Fe Ry. v. Buell, 480 U.S. 557, 562, 107 S.Ct. 1410, 1413-14, 94 L.Ed.2d 563 (1987). The first class of disputes-major disputes — seeks to create contractual rights; and the second class — minor disputes — seeks to enforce these rights. See Hawaiian Airlines, at 252-54, 114 S.Ct. at 2244. The Railroad contends that this case involves a minor dispute.
Minor disputes grow “out of grievances or out of the interpretation or application of agreements covering rates of pay, rules, or working conditions,” 45 U.S.C. § 151a, and they “involve controversies over the meaning of an existing collective bargaining agreement in a particular fact situation,” Hawaiian Airlines, at 252-54, 114 S.Ct. at 2244 (quoting Brotherhood of R.R. Trainmen v. Chicago R. & I.R. Co., 353 U.S. 30, 33, 77 S.Ct. 635, 636-37, 1 L.Ed.2d 622 (1957)). All minor disputes must be adjudicated under RLA mechanisms, which include an employer’s internal dispute-resolution procedures and an adjustment board established by the unions and the employer. Id.; see 45 U.S.C. § 184. If Monroe’s FELA and Illinois public policy claims are “minor disputes,” they are, of course, preempted by the RLA.
In Hawaiian Airlines, the Supreme Court addressed the preemption of minor disputes under the RLA. The Court held that not all grievances or employment-related disputes are considered “minor disputes” for RLA preemption purposes. Hawaiian Airlines, at 252-54, 114 S.Ct. at 2244. Rather, “‘grievances,’ like disputes over ‘the interpretation or application’ of CBAs, refers to disagreements over how to give effect to the bargained-for agreement.” Id. Hawaiian Airlines ultimately found that the RLA did not preempt the plaintiffs state-law tort actions — which were based on the state’s public policy and its whistle-blower statute — because those claims necessitated a purely factual inquiry into the retaliatory motivations of the employer and did not require interpretation of the relevant CBA. Id. at 266, 114 S.Ct. at 2251.
*517In reaching this conclusion, Hawaiian Airlines embraced the analysis from a prior preemption case, Lingle v. Norge Div. of Magic Chef, Inc., 486 U.S. 399, 108 S.Ct. 1877, 100 L.Ed.2d 410 (1988). See Hawaiian Airlines, at 262-64, 114 S.Ct. at 2249 (“[W]e conclude that Lingle provides an appropriate framework for addressing pre-emption under the RLA, and we adopt the Lingle standard to resolve claims of RLA pre-emption.”). In Lingle, the Court held that the plaintiffs state-law retaliatory discharge claim was not preempted by the Labor Management Relations Act (“LMRA”) because it turned on “purely factual questions” regarding the employer’s motivation behind the discharge and it did not require interpretation of any CBA term. Lingle, 486 U.S. at 407, 108 S.Ct. at 1882. In reaching this decision, the Lingle Court recognized that dispute resolution pursuant to a CBA and the adjudication of a separate state-law claim might require different tribunals to address the same set of facts, id. at 408-09, 108 S.Ct. at 1882-83; nonetheless, the Court ruled that a state claim is independent of a CBA for preemption purposes “as long as the state-law claim can be resolved without interpreting the agreement itself,” id. at 410, 108 S.Ct. at 1883.
We have had the opportunity to decide RLA preemption cases since Hawaiian Airlines adopted the Lingle standard. In Bielicke v. Terminal R.R. Ass’n, 30 F.3d 877 (7th Cir.1994) — a ease strikingly similar to the one before us — we held that the RLA preempted the plaintiffs’ FELA claims, which alleged that the railroad wrongfully discharged plaintiffs and improperly abused its investigatory powers in an attempt to discourage plaintiffs from pursuing other FELA actions to recover damages for their job-related personal injuries.2 Significantly, we reasoned that “[o]ne cannot determine whether Terminal Railroad conducted the investigations for legitimate purposes under the collective bargaining agreements or if they abused the investigation procedures allowed by the collective bargaining agreements ... without focusing the case on the collective bargaining agreements themselves.” Id. at 878.
More recently, we held that the RLA did not preempt a plaintiffs retaliatory discharge action filed under the Illinois Workers’ Compensation Act. See Westbrook v. Sky Chefs, Inc., 35 F.3d 316 (7th Cir.1994). In Sky Chefs, we found that plaintiffs cause of action was not a minor dispute (and thus not preempted) because it involved “rights and obligations that exist independent of the collective bargaining agreement.” Id. at 318 (quoting Hawaiian Airlines, at 258-60, 114 S.Ct. at 2247). In reaching this conclusion, we based our decision solely on the fact that the CBA did not provide the “only source” of plaintiffs rights, and we had no occasion to address whether the adjudication of plaintiffs state-law claim would involve interpretation or application of a CBA. See id. at 317-18.
In this case, the Railroad argues that Monroe’s claims are preempted because they are minor disputes that require interpretation of the CBA. Monroe, in contrast, maintains that his claims are not minor disputes because they are not based on the rights given by the CBA, but rather are “independently based” on rights conferred by the FELA and the State of Illinois. The gravamen of Monroe’s claim is that the Railroad terminated his employment in order to interfere with his potential FELA personal injury claim, and that both the FELA and Illinois public policy prohibit such action by the *518Railroad. Monroe also maintains that the adjudication of his complaint requires no interpretation of the CBA because the only questions are “whether the employee was discharged ... and, if so, whether the employer’s motive in discharging him was to deter or interfere with his exercise of rights” protected by the FELA and Illinois public policy. See Hawaiian Airlines, at 260-62, 114 S.Ct. at 2248.
Like the district court, we agree that an uncritical glance at Monroe’s claims seems to compel a finding of no preemption in light of the Supreme Court’s Hawaiian Airlines and our Sky Chefs decisions. We need not analyze any part of the CBA to determine that the Railroad actually terminated Monroe. Moreover, Monroe correctly asserts that the source of his claims is independent of the CBA because they are found in the FELA and in Illinois public policy.3 Monroe’s argument falters, however, when he asserts that the Railroad’s motivation behind his termination involves a purely factual question that requires no interpretation or application of the CBA.
Unlike the claims in Hawaiian Airlines and Lingle, Monroe’s claims do not involve purely factual questions, and they do require interpretation of the CBA. Any analysis of Monroe’s wrongful discharge claims necessarily requires interpretation of the CBA in order to determine the validity of his arguments regarding the Railroad’s retaliatory intent.
First of all, Monroe’s complaint alleges that the Railroad failed to avail itself of its right to compel him to undergo a physical examination if it contested his medical condition. The CBA provides the Railroad with its right to compel such an examination. Second, a court must apply and interpret the standards regarding an employee’s physical condition — which are implied terms of the CBA — when analyzing Monroe’s claim of pretextual discharge. See Fry v. Airline Pilots Ass’n, Int'l, 88 F.3d 831, 836 (10th Cir.1996) (A “plaintiffs claims are minor disputes if they depend not only on a right found in the CBAs, but also if they implicate practices, procedures, implied authority, or codes of conduct that are part of the working relationship.”). Third, Monroe questions the propriety of his disciplinary hearing as well as the sufficiency of the evidence proffered at that hearing by objecting to the testimony of a doctor who never examined him. This hearing was conducted pursuant to the CBA and the RLA, thereby necessitating the court’s interpretation of that agreement and those laws. Fourth, Monroe’s claims involve past and future wages, benefits, and promotions — all of which are determined by the CBA.4 Finally, in one of Monroe’s three other legal actions, Monroe himself argued that his claim against the Railroad for unmeritorious discipline (i.e., his dismissal) must be analyzed under the CBA and the RLA.5 In light of these facts, we must conclude that Monroe’s FELA and Illinois public policy claims involve interpretation of the CBA, and thus they are minor disputes that can only be adjudicated under the RLA.
Monroe asserts that Hawaiian Airlines specifically rejected the notion that a CBA *519must be consulted in order to determine the propriety of a discharge. But the only “interpretation” question put forth in Hawaiian Airlines was whether the employee was, in fact, discharged. Hawaiian Airlines, at 266, 114 S.Ct. at 2251. The Court rejected the employer’s argument, reasoning that the determination of whether the employee was discharged was a “purely factual question.” Id. In this case, there is no dispute about the purely factual question of whether Monroe was discharged — he clearly was terminated by the Railroad. Rather, the factual matters at issue here involve the propriety of Monroe’s discharge.
Moreover, contrary to Monroe’s assertions, we can easily harmonize our decision today with our decision in Sky Chefs. Sky Chefs relied upon only one aspect of the RLA preemption standard set out in Hawaiian Airlines and Lingle — whether a CBA provided the only source for a plaintiffs wrongful discharge claim. Sky Chefs, 35 F.3d at 318. Here, we have the occasion to address a second facet of the Hawaiian Airlines-Lin-gle standard — whether the adjudication of a plaintiffs claim requires interpretation of a CBA. Our Sky Chefs decision should not be narrowly construed to eliminate this latter, and crucial, element of the Hawaiian Airlines-Lingle preemption standard.
Our finding of preemption here also complies with the recent application of Hawaiian Airlines by two other circuits. In Kollar v. United Transportation Union, 83 F.3d 124 (5th Cir.1996), the Fifth Circuit found that the RLA preempted plaintiffs’ fraud claim because it involved the interpretation of plaintiffs’ seniority, which was controlled by a CBA and other modifying agreements. Id. at 126. Significantly, the court found that even though the plaintiffs couched their claim in terms of fraud — a source independent of the CBA — the resolution of that claim required interpretation of the CBA: “To prove the falsity of the representations, Plaintiffs would have to show that the relevant seniority provisions of the CBA, the transfer agreement, and modifying letter agreement, differ from the representations made by the Union. This requires interpretation of the CBA left appropriately to procedures established under the RLA.” Id.
Similarly, the Tenth Circuit in Fry found that several plaintiffs’ federal and state claims were preempted because they could not “be understood without reference to the various CBAs.” Fry, 88 F.3d at 836. That court first noted that the threshold question for RLA- preemption after both Hawaiian Airlines and Lingle remained “whether resolution of the federal and state law claims of the plaintiffs requires interpretation or application of the CBAs.” Id. at 836. Then it determined that plaintiffs’ claims were minor disputes, and thus preempted, because the district court needed to review the relevant CBAs in order to determine the appropriateness of the employer’s motives in discharging the striking pilots. Id. at 836-37.
Without question, the Supreme Court’s Hawaiian Airlines decision makes this a close case (or at least a much closer one than before Hawaiian Airlines was decided). Moreover, we recognize “that not all cases which tangentially touch collective bargaining agreements call for ... preemption.” Loewen Group Int'l, Inc. v. Haberichter, 65 F.3d 1417, 1423 (7th Cir.1995); accord Livadas v. Bradshaw, 512 U.S. 107, 122-26 & n. 18, 114 S.Ct. 2068, 2078-79 & n. 18, 129 L.Ed.2d 93 (1994). The factual particularities of Monroe’s complaint, however, require an interpretation of the CBA and thus mandate our finding of preemption.
Simply put, we believe that the district court correctly determined that what Monroe “attempts to do in this lawsuit is to litigate his labor-related claims under FELA,” and that such a “course of action is not permitted by Hawaiian Airlines.” Monroe v. Missouri Pacific R.R. and Union Pacific R.R., No. 96-CV-0351-PER, slip op. at 6 (S.D.Ill. July 9, 1996). We cannot allow Monroe to “artfully plead” himself around the preemptive effect of the RLA by framing his CBA claims as wrongful discharge causes of action under the FELA and Illinois public policy. See Hammond v. Terminal R.R. Ass’n, 848 F.2d 95, 97 (7th Cir.1988) (“A claim does not arise under the FELA merely because the plaintiff names that statute in his complaint and omits (accidentally or by design) the *520claim’s true source.”). See generally Bielicke, 30 F.3d 877. As such, we AjffiRM the district court’s decision dismissing Monroe’s claims for lack of subject matter jurisdiction.
. On November 22, 1996, an arbitration panel in the Public Law Board No. 5314 reached a conclusion regarding Monroe's CBA labor grievance. It ruled that the Railroad's disciplinary investigation against Monroe was not fair and impartial and ordered Monroe "reinstated to service with all rights unimpaired and with backpay."
. Monroe argues that we should not consider Bielicke because that decision did not discuss Hawaiian Airlines. In making this argument, Monroe suggests that the Bielicke court may not have considered Hawaiian Airlines because the Supreme Court decided Hawaiian Airlines only one month before we decided Bielicke, and apparently neither party in Bielicke requested that we reconsider our decision in light of the recent Hawaiian Airlines decision.
Plaintiff raises legitimate concerns, and we therefore tread lightly in discussing Bielicke. Nonetheless, we find the Bielicke decision to be valid and helpful here — it was decided after Hawaiian Airlines, it has not been overruled, and its facts are nearly identical to those before us. • Moreover, although Bielicke did not discuss Hawaiian Airlines, its holding comports with the Supreme Court’s reasoning in both Hawaiian Airlines and Lingle. In all three cases, a key component in the preemption analysis remains whether a plaintiff's claims require a court to interpret a CBA.
. This assumes, of course, that Monroe has stated claims upon which relief may be granted — a premise that the Railroad vigorously contests and of which we are highly skeptical. Nonetheless, we need not address whether Monroe has stated valid claims under Fed.R.Civ.P. 12(b)(6) due to our finding of preemption.
. While this reason alone would not compel a finding that Monroe's claims involve application or interpretation of a CBA, it does aid our analysis. Cf. Livadas v. Bradshaw, 512 U.S. 107, 124— 26, 114 S.Ct. 2068, 2079, 129 L.Ed.2d 93 (1994) ("ITlhe mere need to 'look to' the collective-bargaining agreement for damage computation is no reason to hold the state law claim defeated....”); Lingle, 486 U.S. at 413 n. 12, 108 S.Ct. at 1885 n. 12.
. The Railroad asserts that Monroe should be judicially estopped from arguing that his wrongful discharge claim is not a minor dispute because of Monroe’s "blatant contradiction” in positions regarding whether his rights must be assessed under the CBA and the RLA. Because we find that the RLA preempts Monroe’s claims, we need not reach the Railroad's judicial estop-pel argument. We note, however, that Hawaiian Airlines apparently permits a plaintiff to maintain both an RLA action before a Public Law Board and a wrongful discharge action before a state or federal court so long as the state or federal court claim does not require interpretation or application of a CBA. Hawaiian Airlines, at 258-64, 114 S.Ct, at 2247-49.