delivered the opinion of the Court.
In Illinois an employee who is discharged for filing a worker’s compensation claim may recover compensatory and punitive damages from her employer. The question presented in this case is whether an employee covered by a collective-bargaining agreement that provides her with a contractual remedy for discharge without just cause may enforce her state-law remedy for retaliatory discharge.. The Court of Appeals held that the application of the state tort remedy was pre-empted by § 301 of the Labor Management Relations Act, 1947, 61 Stat. 156, 29 U. S. C. § 185.
Petitioner was employed m respondent s manufacturing plant in Herrin, Illinois. On December 5, 1984, she notified respondent that she had been injured in the course of her employment and requested compensation for her medical expenses pursuant to the Illinois Workers’ Compensation Act. On December 11, 1984, respondent discharged her for filing a “false worker’s compensation claim.” Id., at 1033.
The union representing petitioner promptly filed a grievance pursuant to the collective-bargaining agreement that covered all production and maintenance employees in the Herrin plant. The agreement protected those employees, including petitioner, from'discharge except for “proper” or “just” cause, App. 13-14, and established a procedure for the arbitration of grievances, id., at 10-11. The term grievance *402 was broadly defined to encompass “any dispute between . . . the Employer and any employee, concerning the effect, interpretation, application, claim of breach or violation of this Agreement.” Id., at 10. Ultimately, an arbitrator ruled in petitioner’s favor and ordered respondent to reinstate her with full backpay. See id., at 25-26.
Meanwhile, on July 9, 1985, petitioner commenced this action against respondent by filing a complaint in the Illinois Circuit Court for Williamson County, alleging that she had been discharged for exercising her rights under the Illinois workers’ compensation laws. App. 2-4; see
Kelsay
v.
Motorola, Inc.,
The Court of Appeals agreed that the state-law claim was pre-empted by § 301. In an en banc opinion, over the dissent of two judges, it rejected petitioner’s argument that the tort action was not “inextricably intertwined” with the collective-bargaining agreement because the disposition of a retaliatory discharge claim in Illinois does not depend upon an interpretation of the agreement; on the contrary, the court concluded that “the same analysis of the facts” was implicated under both procedures.
II
Section 301(a) of the Labor Management Relations Act of 1947, 61 Stat. 156, 29 U. S. C. § 185(a), provides:
“Suits for violation of contracts between an employer and a labor organization representing employees in an industry affecting commerce as defined in this Act, or between any such labor organizations, may be brought in any district court of the United States having jurisdiction of the parties, without respect to the amount in controversy or without regard to the citizenship of the parties.”
In
Textile Workers
v.
Lincoln Mills,
In
Teamsters
v.
Lucas Flour Co.,
*405
In
Allis-Chalmers Corp.
v.
Lueck,
Thus, Lueck faithfully applied the principle of §301 preemption developed in Lucas Flour: 4 if the resolution of a *406 state-law claim depends upon the meaning of a collective-bargaining agreement, the application of state law (which might lead to inconsistent results since there could be as many state-law principles as there are States) is pre-empted and federal labor-law principles — necessarily uniform throughout the Nation — must be employed to resolve the dispute. 5
1 — 1 1 — 1
Illinois courts have recognized the tort of retaliatory discharge for filing a worker’s compensation claim,
Kelsay
v.
Motorola, Inc.,
*408
The Court of Appeals seems to have relied upon a different way in which a state-law claim may be considered “independent” of a collective-bargaining agreement. The court wrote that “the just cause provision in the collective-bargaining agreément may well prohibit such retaliatory discharge,” and went on to say that if the state-law cause of action could go forward, “a state court would be deciding precisely the
same issue
as would an arbitrator: whether there was ‘just cause’ to discharge the worker.”
IV
The result we reach today is consistent both with the policy of fostering uniform, certain adjudication of disputes over the *411 meaning of collective-bargaining agreements and with cases that have permitted separate fonts of substantive rights to remain unpre-empted by other federal labor-law statutes.
First, as we explained in
Lueck,
“[t]he need to preserve the effectiveness of arbitration was one of the central reasons that underlay the Court’s holding in
Lucas Flour”
Second, there is nothing novel about recognizing that substantive rights in the labor relations context can exist without interpreting collective-bargaining agreements.
“This Court has, on numerous occasions, declined to hold that individual employees are, because of the availability of arbitration, barred from bringing claims under federal statutes. See, e. g., McDonald v. West Branch,466 U. S. 284 (1984); Barrentine v. Arkansas-Best Freight System, Inc.,450 U. S. 728 (1981); Alexander v. Gardner-Denver Co.,415 U. S. 36 (1974). Although the analysis of the question under each statute is quite distinct, the theory running through these cases is that *412 notwithstanding the strong policies encouraging arbitration, ‘different considerations apply where the employee's claim is based on rights arising out of a statute designed to provide minimum substantive guarantees to individual workers.’ Barrentine, supra, at 737.” Atchison, T. & S. F. R. Co. v. Buell,480 U. S. 557 , 564-565 (1987) (emphasis added).
Although our comments in
Buell,
construing the scope of Railway Labor Act pre-emption, referred to independent
federal
statutory rights, we subsequently rejected a claim that federal labor law pre-empted a
state
statute providing a onetime severance benefit to employees in the event of a plant closing. In
Fort Halifax Packing Co.
v.
Coyne,
The Court of Appeals “recognize[d] that § 301 does not preempt state anti-discrimination laws, even though a suit under these laws, like a suit alleging retaliatory discharge, requires a state court to determine whether just cause existed to justify the discharge.”
V
In sum, we hold that an application of state law is preempted by § 301 of the Labor Management Relations Act of 1947 only if such application requires the interpretation of a collective-bargaining agreement. 12
The judgment of the Court of Appeals is reversed.
It is so ordered.
Notes
Peabody Galion
v.
Dollar,
We later concluded that state courts have concurrent jurisdiction over § 301 claims.
Charles Dowd Box Co.
v.
Courtney,
Our discussion of the pre-emptive scope of § 301 bears repeating:
“It was apparently the theory of the Washington court that, although Textile Workers Union v. Lincoln Mills,353 U. S. 448 , requires the federal courts to fashion, from the policy of our national labor laws, a body of federal law for the enforcement of collective-bargaining agreements, nonetheless, the courts of the States remain free to apply individualized local rules when called upon to enforce such agreements. This view cannot be accepted. The dimensions of § 301 require the conclusion that substantive principles of federal labor law must be paramount in the area covered by the statute. Comprehensiveness is inherent in the process by which the law is to be formulated under the mandate of Lincoln Mills, requiring issues raised in suits of a kind covered by § 301 to be decided according to the precepts of federal labor policy.
“More important, the subject matter of. § 301(a) ‘is peculiarly one that calls for uniform law.’ . . . The possibility that individual contract terms might have different meanings under state and federal law would inevitably exert a disruptive influence upon both the negotiation and administration of collective agreements. Because neither party could be certain of the rights which it had obtained or conceded, the process of negotiating an agreement would be made immeasurably more difficult by the necessity of trying to formulate contract provisions in such a way as to contain the same meaning under two or more systems of law which might someday be invoked in enforcing the contract. Once the collective bargain was made, the possibility of conflicting substantive interpretation under competing legal systems would tend to stimulate and prolong disputes as to its interpretation. Indeed, the existence of possibly conflicting legal concepts might substantially impede the parties’ willingness to agree to contract terms providing for final arbitral or judicial resolution of disputes.
“The importance of the area which would be affected by separate systems of substantive law makes the need for a single body of federal law particularly compelling. The ordering and adjusting of competing interests through a process of free and voluntary collective bargaining is the keystone of the federal scheme to promote industrial peace. State law which frustrates the effort of Congress to stimulate the smooth functioning of that process thus strikes at the very core of federal labor policy. With due regard to the many factors which bear upon competing state and fed *405 eral interests in this area, ... we cannot but conclude that in enacting § 301 Congress intended doctrines of federal labor law uniformly to prevail over inconsistent local rules.”369 U. S., at 103-104 (citations omitted; footnote omitted).
We applied this same principle of §301 pre-emption just last Term to a case in which the plaintiff had conceded that the “ ‘nature and scope of the duty of care owed [her] is determined by reference to the collective bargaining agreement.’”
Electrical Workers
v.
Hechler,
We have twice applied the
Lucas Flour
§301 pre-emption principle in determining whether a state-law claim brought in state court was properly removed to federal court. In
Avco Corp.
v.
Machinists,
Although the cause of action was not based on any specific statutory provision, the following section of the Illinois Workers’ Compensation Act expresses the public policy underlying the common-law development:
“It shall be unlawful for any employer, insurance company or service or adjustment company to interfere with, restrain or coerce an employee in any manner whatsoever in the exercise of the rights or remedies granted to him or her by this Act or to discriminate, attempt to discriminate, or *407 threaten to discriminate against an employee in any way because of the exercise of his or her rights granted to him or her by this Act.
“It shall be unlawful for any employer, individually or through any insurance company or service or adjustment company, to discharge or threaten to discharge, or to refuse to rehire or recall to active service in a suitable capacity an employee because of the exercise of his or her rights or remedies granted him or her by this Act.” Ill. Rev. Stat., ch. 48, ¶ 138.4(h) (1987).
Such independence was not present either in
Lucas Flour, Allis-Chalmers Corp.
v.
Lueck,
Petitioner points to the fact that the Illinois right to be free from retaliatory discharge is nonnegotiable and applies to unionized and nonunionized workers alike. While it may be true that most state laws that are not preempted by § 301 will grant nonnegotiable rights that are shared by all state workers, we note that neither condition ensures nonpre-emption. It is conceivable that a State could create a remedy that, although nonnegotiable, nonetheless turned on the interpretation of a collective-bargaining agreement for its application. Such a remedy would.be pre-empted by § 301. Similarly, if a law applied to all state workers but required, at least in certain instances, collective-bargaining agreement interpretation, the application of the law in those instances would be pre-empted. Conversely, a law could cover only unionized workers but remain unpre-empted if no collective-bargaining agreement interpretation was needed to resolve claims brought thereunder.
Although §301 pre-empts state law only insofar as resolution of the state-law claim requires the interpretation of a collective-bargaining agreement, and although § 301 pre-emption is all that is at issue in this case, it is important to remember that other federal labor-law principles may preempt state law. Thus, in
San Diego Building Trades Council
v.
Garmon,
“A second pre-emption doctrine protects against state interference with policies implicated by the structure of the [NLRA] itself, by pre-empting state law and state causes of action concerning conduct that Congress intended to be unregulated.”
Metropolitan Life Ins. Co.
v.
Massachusetts,
Whether a union may
waive
its members’ individual, nonpre-empted state-law rights, is, likewise, a question distinct from that of whether a claim is pre-empted under § 301, and is another issue we need not resolve today. We note that under Illinois law, the parties to a collective-bargaining agreement may not waive the prohibition against retaliatory discharge nor may they alter a worker’s rights under the state worker’s
*410
compensation scheme.
Byrd
v.
Aetna Casualty & Surety Co.,
Thus, what we said in
Caterpillar Inc.
v.
Williams,
“Caterpillar asserts that respondents’ state-law contract claims are in reality completely pre-empted § 301 claims, which therefore arise under federal law. We disagree. Section 301 governs claims founded directly on rights created by collective-bargaining agreements, and also claims ‘substantially dependent on analysis of a collective-bargaining agreement.’ Electrical Workers v. Heckler,481 U. S. 851 , 859, n. 3 (1987); see also Allis-Chalmers Corp. v. Lueck,471 U. S., at 220 . Respondents allege that Caterpillar has entered into and breached individual employment contracts with them. Section 301 says nothing about the content or validity of individual employment contracts. It is true that respondents, bargaining unit members at the time of the plant closing, possessed substantial rights under the collective agreement, and could have brought suit under §301. As masters of the complaint, however, they chose not to do so.
“Moreover, contrary to Caterpillar’s assertion, . . . respondents’ complaint is not substantially dependent upon interpretation of the collective-bargaining agreement. It does not rely upon the collective agreement indirectly, nor does it address the relationship between the individual contracts and the collective agreement. As the Court has stated, ‘it would be inconsistent with congressional intent under [§ 301] to pre-empt state rules that proscribe conduct, or establish rights and obligations, independent of a labor contract.’ Allis-Chalmers Corp., supra, at 212.”
Arbitrators are delegated by nearly all collective-bargaining agreements as the adjudicators of contract disputes. See
Paperworkers
v.
Misco, Inc.,
A collective-bargaining agreement may, of course, contain information such as rate of pay and other economic benefits that might be helpful in determining the damages to which a worker prevailing in a state-law suit is entitled. See
Baldracchi
v.
Pratt & Whitney Aircraft Div., United Technologies Corp.,
