delivered the opinion of the Court.

On March 13, 1963, petitioner, a resident of Kentucky, began an action under the Federal Employers’ Liability Act, 35 Stat. 65, as amended, 45 U. S. C. § 51 et seg. (1958 ed.), in the Common Pleas Court of Hamilton County, Ohio. He alleged that he had been injured on March 17, 1960, in Indiana, while in. the course of his employment with respondent, the New York Central Railroad. The *425Ohio court had jurisdiction of the action, and respondent was properly served with process. The action was dismissed upon respondent’s motion, however, because venue was improper. While in Ohio in most transitory actions venue is proper wherever the defendant can be summoned, see Ohio Rev. Code §§ 2307.36, 2307.38, 2307.39, venue is properly laid in actions against railroads to recover for personal injuries only in the county of the plaintiff’s residence or the county where the injury occurred.1 See Ohio Rev. Code § 2307.37, Loftus v. Pennsylvania R. Co., 107 Ohio St. 352, 140 N. E. 94. On June 12, 1963, eight days after his state court action was dismissed, petitioner brought an identical action in the Federal District Court for the Southern District of Ohio. The District Court dismissed petitioner’s complaint on the ground that although the state suit was brought within the limitations period, the federal action was not timely and was then barred by the limitation provision of the FELA, 35 Stat. 66, as amended, 45 U. S. C. § 56 (1958 ed.), which provides: “That no action shall be maintained under this Act unless commenced within three years from the day the cause of action accrued.” 230 F. Supp. 767. The Court of Appeals, rejecting petitioner’s argument that his suit in the state court had tolled the FELA limitation provision, affirmed the District Court’s dismissal of his suit. 332 F. 2d 529. The Court of Appeals reasoned that since the limitation provision does not limit a common-law right, but, rather, is contained in the same Act which creates the right being limited, the limitation is “substantive” and not “procedural.” For this reason, it held, “[fjailure to bring the action within the time pre*426scribed extinguished the cause of action.” 332 F. 2d, at 530. We granted certiorari to determine whether petitioner's suit in the Ohio state court tolled the FELA statute of limitations. 379 U. S. 913.

There is no doubt that, as a matter of federal law, the state action here involved was properly “commenced” within the meaning of the federal limitation statute which provides that “no action shall be maintained . . . unless commenced within three years from the day the cause of action accrued.” As this Court held in Herb v. Pitcairn, 325 U. S. 77, 79, “when process has been adequate to bring in the parties and to start the case on a course of judicial handling which may lead to final judgment without issuance of new initial process, it is enough to commence the action within the federal statute.” Had Ohio law permitted this state court action simply to be transferred to another state court, Herb v. Pitcairn holds that it would have been timely. The problem here, however, is that the timely state court action was not transferable under Ohio law but, rather, was dismissed, and a new action was brought in a federal court more than three years after the cause of action accrued. Nonetheless, for the reasons set out below, we hold that the principles underlying the Court's decision in Herb v. Pitcairn lead to the conclusion that petitioner’s state court action tolled the federal limitation provision and therefore petitioner’s federal court action here was timely.

The basic question to be answered in determining whether, under a given set of facts, a statute of limitations is to be tolled, is one “of legislative intent whether the right shall be enforceable . . . after the prescribed time.” Midstate Horticultural Co. v. Pennsylvania R. Co., 320 U. S. 356, 360. Classification of such a provision as “substantive” rather than “procedural” does not determine whether or under what circumstances the limitation *427period may be extended.2 As this Court has expressly held, the FELA limitation period is not totally inflexible, but, under appropriate circumstances, it may be extended beyond three years. Glus v. Brooklyn Eastern Terminal, 359 U. S. 231. See Osbourne v. United States, 164 F. 2d 767 (C. A. 2d Cir.); Scarborough v. Atlantic Coast Line R. Co., 178 F. 2d 253 (C. A. 4th Cir.); Frabutt v. New York, C. & St. L. R. Co., 84 F. Supp. 460 (D. C. W. D. Pa.). These authorities indicate that the basic inquiry is whether congressional purpose is effectuated by tolling the statute of limitations in given circumstances.

In order to determine congressional intent, we must examine the purposes and policies underlying the limitation provision, the Act itself, and the remedial scheme developed for the enforcement of the rights given by the Act. Such an examination leads us to conclude that it effectuates the basic congressional purposes in enacting this humane and remedial Act,3 as well as those policies *428embodied in the Act's limitation provision, to hold that when a plaintiff begins a timely FELA action in a state court of competent jurisdiction, service of process is made upon the opposing party, and the state, court action is later dismissed because of improper venue, the FELA limitation is tolled during the pendency of the state action.

Statutes of limitations are primarily designed to assure fairness to defendants. Such statutes “promote justice by preventing surprises through the revival of claims that have been allowed to slumber until evidence has been lost, memories have faded, and witnesses have disappeared. The theory is that even if one has a just claim it is unjust not to put the adversary on notice to defend within the period of limitation and that the right to be free of stale claims in time comes to prevail over the right to prosecute them.” Order of Railroad Telegraphers v. Railway Express Agency, Inc., 321 U. S. 342, 348-349. Moreover, the courts ought to be relieved of the burden of trying stale claims when a plaintiff has slept on his rights.4

This policy of repose, designed to protect defendants, is frequently outweighed, however, where the interests of justice require vindication of the plaintiff’s rights. Thus, this Court has held that an FELA action is not barred, though brought more than three years after the cause of action accrued, where a defendant misled the plaintiff into believing that he had more than three years in which to bring the action. Glus v. Brooklyn Eastern Terminal, supra. Moreover, it has been held that the *429FELA limitation provision is tolled when war has prevented a plaintiff from bringing his suit, even though a defendant in such a case might not know of the plaintiff’s -disability and might believe that the statute of limitations renders him immune from suit. See Osbourne v. United States, supra; Frabutt v. New York, C. & St. L. R. Co., supra. In such cases a plaintiff has not slept on his rights but, rather, has been prevented from asserting them.

Considerations in favor of tolling the federal statute of limitations in this case are similar to those leading to an extension of the limitation period in the cases mentioned above. Petitioner here did not sleep on his rights but brought an action within the statutory period in a state court of competent jurisdiction. Service of process was made upon the respondent notifying him that petitioner was asserting his cause of action. While venue was improper in the state court, under Ohio law venue objections may be waived by the defendant,5 and evidently in past cases defendant railroads, including this respondent, had waived objections to venue so that suits by nonresidents of Ohio could proceed in state courts.6 Petitioner, then, failed to file an FELA action in the federal courts, not because he was disinterested, but solely because he felt that his state action was sufficient. Respondent *430could not have relied upon the policy of repose embodied in the limitation statute, for it was aware that petitioner was actively pursuing his FELA remedy; in fact, respondent appeared specially in the Ohio court to file a motion for dismissal on grounds of improper venue.

Both federal and state jurisdictions have recognized the unfairness of barring a plaintiff’s action solely because a prior timely action is dismissed for improper venue after the applicable statute of limitations has run. In both federal and state systems of justice rules have been devised to prevent this from happening. Thus a federal statute, 28 U. S. C. § 1406 (a), allows a district court “of a district in which is filed a case laying venue in the wrong division or district . . . if it be in the interest of justice,” to “transfer such case to any district or division in which it could have been brought.” 7 Congress thereby recognized that the filing of a lawsuit “itself shows the proper diligence on the part of the plaintiff which . . . statutes of limitation were intended to insure. If by reason of the uncertainties of proper venue a mistake is made . . . 'the interest of justice’ may require that the complaint ... be transferred in order that the plaintiff not be penalized by . . . 'time-consuming and justice-defeating technicalities.’ ” Goldlawr, Inc. v. Heiman, 369 U. S. 463, 467. If petitioner in this case had instituted his suit in a federal court where venue was improper, his case could simply have been transferred under § 1406 (a) to a court with proper venue; the statute of limitations would not have barred his action.

*431The States have developed two methods for preserving causes of action which would otherwise be barred by the passing of a limitation period after a plaintiff has brought his action in a court with improper venue. The first method is analogous to the congressional statute, 28 U. S. C. § 1406 (a), and permits transfer within the State from a court with improper venue to one where venue is proper.8 This Court has held that when a timely FELA action is brought in a state court without proper venue and service of process issues, the statute of limitations cannot bar the action when it is later transferred to a proper state court after the limitation period has run. Herb v. Pitcairn, supra. Thus, if venue for petitioner’s action were proper in some other county in Ohio, and if Ohio chose to preserve improper venue actions by means of a “transfer” statute, petitioner’s action would not have been barred by the statute of limitations. The second method used by many States to preserve actions brought in a court where venue is improper is a “saving” statute.9 *432Such a statute specifically gives to a plaintiff whose timely action is dismissed for procedural reasons such as improper venue a specified time in which to bring a second action. Ohio has such a statute, Ohio Rev. Code § 2305.19, and, had petitioner’s action been one arising under Ohio law, he would have had an additional year in which to file his action in a proper court. State causes of action brought in a court where venue is improper are preserved by one or the other of these two methods in 44 States.10

These factors point to the conclusion that Congress did not intend the statute of limitations to bar a plaintiff who brings a timely FELA action in a state court of competent jurisdiction, who serves the defendant with process, and whose action is later dismissed for improper venue. This does not mean that we can accept petitioner’s argument that the federal limitation provision *433incorporates the Ohio Saving Statute. To allow the limitation provision to incorporate state saving statutes would produce nonuniform periods of limitation in the several States. The scope of such statutes and the length of additional time they allow vary considerably from State to State.11 Moreover, not all States have saving statutes.12 This Court has long recognized that the FELA “has a uniform operation, and neither is nor can be deflected therefrom by local statutes.” Panama R. Co. v. Johnson, 264 U. S. 375, 392; Second Employers’ Liability Cases, 223 U. S. 1, 51, 55. This Court has also specifically held that “[t]he period of time within which an action may be commenced is a material element in . . . [a] uniformity of operation” which Congress would not wish “to be destroyed by the varying provisions of the state statutes of limitation.” Engel v. Davenport, 271 U. S. 33, 39. The incorporation of variant state saving statutes would defeat the aim of a federal limitation provision designed to produce national uniformity.

On the other hand, to accept respondent’s argument that the limitation provision is not tolled under the circumstances present here would do even greater violence to the policies underlying the limitation provision and the Act. It would produce a substantial nonuniformity by creating a procedural anomaly. A plaintiff who brings a timely FELA action in a federal court where venue is improper would not be barred by the subsequent running of the limitation period, 28 U. S. C. § 1406 (a), nor would a plaintiff who brings a timely FELA action in a state *434court where venue is improper be barred by the subsequent running of the limitation period provided that the State has a "transfer” statute and venue is proper elsewhere in the State. Herb v. Pitcairn, supra. However, a similar plaintiff in a state court would be barred from further actions by the running of the limitation period if the State relies upon a “saving” statute, rather than a “transfer” statute to preserve similar state actions.13 Thus, in effect, a nonuniform limitation provision would be produced. Yet, as we have pointed out, a major reason for having a federal limitation provision was to achieve national uniformity. Engel v. Davenport, supra. Moreover, to accept respondent’s position could only discourage FELA actions in the courts of certain States. Yet Congress, in providing for concurrent state and federal court jurisdiction and prohibiting removal of FELA cases to federal courts, has sought to protect the plaintiff’s right to bring an FELA action in a state court. See Great Northern R. Co. v. Alexander, 246 U. S. 276. Cf. Gibson, The Venue Clause and Transportation of Lawsuits, 18 Law & Contemp. Prob. 367 (1953). Further, as we have pointed out, both Congress and the States have made clear, through various procedural statutes, their desire to prevent timely actions brought in courts with improper venue from being time-barred merely because the limitation period expired while the action was in the improper court. Finally, the humanitarian purpose of the FELA makes clear that Congress would not wish a plaintiff deprived of his rights when no policy underlying a statute of limitations is served in doing so.

These considerations thus lead us to conclude that when a plaintiff begins a timely FELA action in a state court having jurisdiction, and serves the defendant with process *435and plaintiff’s case is dismissed for improper venue, the FELA limitation is tolled during the pendency of the state suit. We believe that the interests of uniformity embodied in the Act are best served by holding that this rule, tolling the statute, applies in all States regardless of whether or not a State has a “saving” statute. We further hold, under familiar principles which have been applied to statutes of limitations, that the limitation provision is tolled until the state court order dismissing the state action becomes final by the running of the time during which an appeal may be taken or the entry of a final judgment on appeal.14 While this rule produces a minor nonuniformity since the time allowed for taking an appeal is not the same in all States, to adopt state “saving” statutes would be far less uniform. The period “saved” under such statutes varies widely among the States, and some States do not have “saving” statutes. Similarly, to toll the federal statute for a “reasonable time” after the state court orders the plaintiff’s action dismissed would create uncertainty as to exactly when the limitation period again begins to run. This uncertainty would be compounded by applying the equitable doctrine of “laches” to the federal lawsuit brought after the dismissal of the state court action. Whether laches bars an action in a given case depends upon the circumstances of that case and “is a question primarily addressed to the discretion of the trial court.” Gardner v. Panama R. Co., 342 U. S. 29, 30. To apply it here would be at variance with the policies of certainty and uniformity underlying this statute of limitations. We conclude that a uniform rule tolling the federal statute for the period of the pendency of the state *436court action and until the state court dismissal order becomes final is fair to both plaintiff and defendant, carries out the purposes of the FELA, and best serves the policies of uniformity and certainty underlying the federal limitation provision.

Applying these principles to the present case, since petitioner brought a timely suit in the Ohio court, served defendant with process, and, after finding the state action dismissed for improper venue, filed his suit in the Federal District Court only eight days after the Ohio court dismissed his action, before his time for appealing from the Ohio order had expired, his federal court action was timely. The Court of Appeals decision affirming the District Court’s dismissal of petitioner’s action is therefore reversed, and this ease is remanded for proceedings consistent with this opinion.

Reversed and remanded.

concurring.

The federal question presented is whether this action, timely started in the state court but not timely started if the filing date in the federal court governs, was “commenced within three years from the day the cause of action accrued” within the meaning of 45 U. S. C. § 56. I think it was so “commenced,” as much as was the action in Herb v. Pitcairn, 325 U. S. 77.

In reaching this conclusion I do not find it necessary to rely on the fact that petitioner.filed in the federal court “before his time for appealing from the Ohio order had expired,” ante, this page. Instead I rest simply on the ground that “when process has been adequate to bring in the parties and to start the case on a course of judicial handling which may lead to final judgment without issuance of new initial process, it is enough to commence the action within the federal statute.” 325 U. S.,.at 79. *437(Emphasis supplied.) And see Herb v. Pitcairn, 324 U. S. 117, 132-133 (dissenting opinion of Black, J.), setting forth the requirements for commencing an FELA action within the meaning of 45 U. S. C. § 56: (1) a bona fide effort to prosecute the claim, (2) in a court having jurisdiction, (3) resulting in-notice to the defendant.

If after dismissal the plaintiff delays inexcusably in refiling his suit in the proper court and the defendant is prejudiced by the delay, the action will of course be barred by laches. Gardner v. Panama R. Co., 342 U. S. 29, 30-31. That familiar equitable doctrine provides the defendant with adequate protection against delay. The Court rejects this established doctrine, however, creating a new statute of limitations of its own which makes the timeliness of a federal cause of action depend on state time requirements which were adopted for other, unrelated purposes and which vary from State to State. The long-established federal rule of laches, in contrast, is uncomplicated, uniform, and directly responsive to the problem. Laches, of course, has no application in the instant case, as petitioner filed in the federal court only eight days after his state court action had been dismissed.