This appeal under the Railway Labor Act, 45 U.S.C. § 151, et seq. (“RLA”), concerns when an enforcement action accrues under the statute of limitations after an arbitration award and, alternatively, whether a request for interpretation of an arbitration award tolls the limitations period. Following an arbitration award, the union sought to enforce the award in district court. The district judge determined that the union’s petition was outside the two-year, statutory limitations period and dismissed the enforcement action, which has presented first-impression issues for our circuit. We affirm.
I. BACKGROUND
On November 19, 2002, T.R. Pitzen, employed by defendant-appellee, CSX Transportation, Inc. (“CSX”), claimed absence from work because of an off-duty neck injury. CSX did not question the legitimacy of Pitzen’s claim. After nearly a three-week absence, Pitzen told a supervisor that, during the period when he supposedly was unable to operate trains, he had driven from Ohio to Panama City, Florida, participated in a karate tournament, and won the heavy-weight title at that tournament. Because his claimed injury absence was under false pretenses, CSX charged Pitzen with dishonesty and terminated him.
On behalf of Pitzen, plaintiff-appellant, Brotherhood of Locomotive Engineers and Trainmen General Committee of Adjustment CSX Transportation Northern Lines (“BLET”), challenged his dismissal and requested his reinstatement. Pursuant to the parties’ collective bargaining agreement and a separate arbitration agreement that established Public Law Board 5959 (the “Board”), the parties re *1193 ferred Pitzen’s claim to the Board. 1 An arbitrator determined that CSX had the burden of proving that Pitzen had been dishonest regarding his absence because of his alleged injury and that it had failed to carry its burden. On June 2, 2004, the arbitrator sustained Pitzen’s claim and ordered compliance within thirty days.
CSX reinstated Pitzen but did not pay him back wages for the period of his dismissal. On August 19, 2004, BLET sent a letter to CSX and demanded back pay for Pitzen. CSX responded on October 6, 2004, that the award did not require the payment of back wages. For more than a year, BLET did nothing. In November 2005, BLET sent two more letters to CSX demanding back pay for Pitzen. CSX responded by repeating its position that the award did not include back pay.
On February 9, 2006, BLET requested that the arbitrator clarify whether the award required payment of back wages. BLET had first acknowledged the potential need for such a clarification in its initial letter on August 19, 2004, but delayed making its request for an interpretation for another sixteen months. On April 7, 2006, the arbitrator clarified that, although the award did not provide for back wages expressly, the terms of the parties’ collectlve bargaining agreement required them. Nonetheless, BLET waited almost four more months before filing its petition for enforcement with the district court on August 1, 2006. In lieu of an answer, CSX moved to dismiss under Federal Rule of Civil Procedure 12(b)(6), because the two-year statute of limitations barred BLET’s petition to enforce the award.
On the facts pled in BLET’s petition, the district judge concluded that the cause of action for enforcement accrued on July 3, 2004, and granted CSX’s motion. The judge additionally decided that the Board had issued an interpretation of the award under 45 U.S.C. § 153 First (m), which did not toll the statute of limitations. Accordingly, the district judge determined that BLET filed its August 1, 2006, petition outside the two-year limitations period and dismissed the action. BLET has appealed that order.
II. DISCUSSION
A. Standards of Review
Prevailing parties under Public Law Boards can enforce awards in federal district court. 45 U.S.C. § 153 First (p). In reviewing a motion to dismiss under Rule 12(b)(6), the standard of review “is
*1194
the same for the appellate court as it was for the trial court.”
Stephens v. Department of Health & Human Servs.,
We review
de novo
a district court’s legal determination concerning the availability of equitable tolling for a statute of limitations.
Drew v. Department of Corrs.,
B. Accrual of Cause of Action
There is no dispute that the two-year statute of limitations contained in 45 U.S.C. § 153 First (r) applies to BLET’s action. This appeal concerns when BLET’s enforcement cause of action under 45 U.S.C. § 153 First (p) accrued for the purpose of calculating the running of the statute of limitations. Because the award specifically states that CSX had to comply within thirty days, and the date of the award was June 2, 2004, the district judge concluded that BLET’s enforcement cause of action accrued on July 3, 2004. Since BLET did not file its petition for enforcement until August 1, 2006, the judge dismissed BLET’s claim as untimely.
The statute of limitations for RLA enforcement actions states that “[a]ll actions at law based upon the provisions of this section shall be begun within two years from the time the cause of action accrues under the award of the division of the Adjustment Board, and not after.” 45 U.S.C. § 153 First (r) (emphasis added). To determine when an enforcement cause of action accrues, the statute provides:
If a carrier does not comply with an order of a division of the Adjustment Board within the time limit in such order, the petitioner, or any person for whose benefit such order was made, may file in the District Court of the United States ... a petition setting forth briefly the causes for which he claims relief, and the order of the division of the Adjustment Board in the premises. Such suit in the District Court of the United States shall proceed in all respects as other civil suits, except that on the trial of such suit the findings and order of the division of the Adjustment Board shall be conclusive on the parties
45 U.S.C. § 153 First (p) (emphasis added). The plain language of these provisions makes the carrier’s failure to comply within the time limit established by the award the triggering event for an enforcement action and the running of the statute of limitations. BLET’s interpretation, that “there is a cause of action for enforcement of an award, not when an award issues, or even when it becomes effective, but when the carrier refuses to comply with the award,” Appellant’s Br. at 10, disregards the subsequent clarifying statutory phrase that a carrier must comply “within the time limit in such order,” 45 U.S.C. § 153 First (p).
The primary principle of statutory construction requires courts to give ef-
*1195
feet to the plain meaning of the words used “in their ordinary and usual sense.”
Caminetti v. United States,
Consequently, the plain meaning of “within the time limit in such order” in § 153 First (p) is that a cause of action to enforce an award arises at the end of the time limit set forth in that award. By requiring a carrier to comply by a date certain, the RLA provides plaintiffs with a basis to determine whether they have a cause of action for enforcement. No compliance by the requisite date indicates that a potential plaintiff had time to acquire sufficient factual knowledge for reasonable inquiry to reveal the cause of action.
United States v. Kubrick,
Other circuits have interpreted § 153 First (p) literally and strictly as did the district judge in this case.
See Lekas v. United Airlines, Inc.,
Significantly, this definite standard serves the policy considerations underlying the RLA. One of the stated objectives of the RLA is “to provide for the prompt and orderly settlement” of railway labor disputes. 45 U.S.C. § 151a(5). In enacting the RLA, “Congress endeavored to promote stability in labor-management relations in this important national industry by providing effective and efficient remedies for the resolution of railroad-employee disputes arising out of the interpretation of collective-bargaining agreements.”
Union Pac. R.R. Co. v. Sheehan,
BLET has not identified any authority that supports an accrual rule different from the district judge’s application of § 153 First (p). 3 Accordingly, the district *1197 judge did not err in concluding that CSX failed to comply within the time period specified in the award. Because the award in this case expressly provided a time for compliance, the relevant authority supports the July 3, 2004, accrual date and substantiates the district judge’s dismissal. Therefore, the district judge correctly determined that BLET’s cause of action accrued when CSX refused to provide back pay by the date stated for compliance in the arbitrator’s award. Because BLET waited more than two years after that date to file its petition, the district judge properly dismissed BLET’s enforcement action as barred by the two-year statute of limitations.
C. Effect of Request for Interpretation on Statute of Limitations
BLET alternatively argues that, even if its cause of action accrued on July 3, 2007, the district judge still erred in dismissing the case because BLET’s request for an interpretation from the Board as to whether CSX had to pay back wages tolled the running of the statute of limitations. Equitable tolling is a form of extraordinary relief that courts have extended “only sparingly.”
Irwin v. Department of Veterans Affairs,
Requests for interpretations are not uncommon in RLA arbitration proceedings. 45 U.S.C. § 153 First (m). Significantly, BLET could have sought an interpretation when CSX showed that it did not intend to pay Pitzen back wages by not doing so by July 2, 2004, the date of compliance specified in the award. Additionally, CSX clarified that it did not believe that the award required it to make a payment of back wages in the October 6, 2004, letter that it sent to BLET. Nonetheless, BLET waited until February 9, 2006, to request interpretation. Even when the arbitrator issued an interpretation on April 7, 2006, BLET waited until August 1, 2006, to file its petition for enforcement. These delays show BLET’s lack of diligence and such lack of diligence is inimical to a request for tolling.
Arce,
“[F]or statute of limitations purposesf,] a plaintiffs ignorance of his legal rights and his ignorance of the fact of his injury or its cause should [not] receive identical treatment.”
Kubick,
BLET could have pursued an interpretation while it sought to enforce the award. Enforcement and interpretation proceedings should proceed separately and simultaneously.
Great Northern Ry. Co. v. National R.R. Adjustment Bd., First Div.,
To determine whether equitable tolling is appropriate, “[t]he basic question ... is one ‘of legislative intent whether the right shall be enforceable ... after the prescribed time.’ ”
Id.
(quoting
Burnett v. New York Cent. R.R. Co.,
This is a part of the [RLA] setting up a specially constituted board to deal with the so-called minor disputes of the industry — grievances in the interpretation or application of employment agreements. As an integral part of this system, Congress gave the employees a special and favorable statutory remedy, to be exercised within two years “and not after,” a period of enforced inaction for the employer, during which he can *1199 not obtain even a declaration of his rights under the original agreement. We think, therefore, that a court is not justified in finding any exception to, or extension of this period.
Joint Council,
In the context of Adjustment Board awards, the former Fifth Circuit concluded “that while Congress did not foresee this extrastatutory mode of review, it was its intention that
all methods
of reviewing NRAB awards be barred unless ‘begun within two years from the time the cause of action accrues under the award ..., and not after.’ ”
Gibson v. Missouri Pac. R.R. Co.,
Section 153 First (m) “states unequivocally” that RLA arbitration awards are final when issued by the arbitrator. 45 U.S.C. § 153 First (m);
TCIU,
III. CONCLUSION
BLET has challenged the dismissal of its cause of action for enforcement of the arbitration award because of the expiration of the statute of limitations. Alternatively, BLET contends that its interpretation request tolled the running of the statute of limitations. As we have explained, in accord with the view of other circuits that have addressed these issues, an interpretation request does not toll the running of the statute of limitations, which had expired well before BLET filed its enforcement action. The dismissal of BLET’s action by the district judge is AFFIRMED.
Notes
. The RLA governs labor relations in the railroad industry and prescribes mandatory procedures for the resolution of disputes. Minor disputes arise under collective bargaining agreements involving employee grievances, which seek to enforce contractual rights or to resolve differing interpretations of an award.
Consolidated Rail Corp. v. Railway Labor Executives Ass’n,
. The Sixth Circuit affirmed a district court's determination that
It is clear and unambiguous that the Congress intended that carriers and its employees, through their unions or otherwise, should be encouraged to avoid industrial strife by setting up special boards of adjustment to determine disputed claims arising from the interpretation of collective bargaining agreements then in effect between the carrier and the union; that such special boards’ jurisdiction was to be limited to the jurisdiction conferred thereupon by agreement of the carrier and union; that compliance with the awards of these special boards should be enforced in United States district courts in the same manner and subject to the same proceedings for enforcement of compliance therewith as had earlier been provided for enforcement of compliance with awards of the National Railroad Adjustment Board; and that the right of action to enforce such compliance should accrue on the date fixed by the special boards as "... the time limit ..." for such compliance.
Switchmen’s Union of N. Am. v. Clinchfield R.R. Co.,310 F.Supp. 606 , 610 (E.D.Tenn.1969) (quoting 45 U.S.C. § 153 First (p)) (omissions in original) (emphasis added), aff'd,427 F.2d 161 (6th Cir.1970).
. While BLET cites Lekas, it fails to note that the award in Lekas did not state a date certain for the carrier to comply. 282 F.3d at 299. It was the absence of a date certain that led the Lekas plaintiff to argue that a cause of action to enforce a RLA award accrues when a plaintiff has some other basis to discover the wrongful act that justifies the cause of action. The Fourth Circuit and all of the parties in Lekas recognized that, if the adjustment board had required the carrier to comply "within a specified time, the failure to comply would have occurred when payment was not made within that specified time,” and the cause of action would have accrued when the date for compliance had passed. Id. at 299-300 (emphasis added). Lekas is inappo-site because the award at issue in this case did specify a time for compliance.
BLET also cites the Seventh Circuit’s
Railroad Yardmasters
decision for the proposition that there is no cause of action under § 153 First (p) "when an award is not clear, not sufficiently definite, or there is a dispute as to what is required.” Appellant's Br. at 14. In
Railroad Yardmasters,
however, the adjustment board had not set a date certain in the challenged arbitration award.
The Seventh Circuit in
Railroad Yardmasters
also affirmed the district judge's dismissal of the enforcement action because the award was not sufficiently definite to permit enforce
*1197
ment.
.
See, e.g., TCIU,
. Although BLET argues that the Sixth Circuit’s decision in Jones v. Seaboard System Railroad, 783 F.2d 639 (6th Cir.1986), where the plaintiff sought review of a RLA award under 45 U.S.C. § 153 First (q), establishes a basis for tolling its claims, Jones is inapposite. Unlike § 153 First (p), which provides for the enforcement of awards, paragraph (q) allows for limited review of RLA arbitration awards by district courts. The Sixth Circuit rejected the plaintiff’s request and found that the plaintiff's claim accrued when the arbitrator issued an award affirming the employee’s dismissal, and the plaintiff failed to seek review within the two-year limitations period established by § 153 First (r). Id. at 642-43. In making this determination, the Sixth Circuit explained in dictum that the only way the plaintiff could have escaped the statute of limitations was to have "filed a motion to reconsider within the two-year period, thereby tolling the time limitation." Id. at 643.
As the Seventh Circuit, has explained, the
Jones dictum
was incorrect.
TCIU,
