entered final judgment on June 9, directing that Williams take nothing.
II.
We first examine the question of jurisdiction. Under 28 U.S.C. § 1445(c), a defendant may not remove a civil action arising under a state’s workers’ compensation laws.3 This statute does not, however, resolve the issue.
We turn to 28 U.S.C. § 1447(c), which states,
A motion to remand the case on the basis of any defect in removal procedure must be made within 30 days after the filing of the notice of removal under section 1446(a). If at any time before final judgment it appears that the district court lacks subject matter jurisdiction, the case shall be remanded....
This statute makes a distinction between procedural defects in removal and lack of subject matter jurisdiction. If a plaintiff finds fault with a procedural element in removal, he has only thirty days in which to make a motion to remand. On the other hand, if he asserts that the federal court lacks subject matter jurisdiction, he may move to remand at any time before final judgment.
The crucial issue in this case, then, is whether GM’s removal was a procedural defect that required Williams to move for remand within thirty days. We conclude that the statutory restriction against removal is not a matter of substantive jurisdiction, but rather a procedural defect that Williams waived.
This court has never addressed the issue of a defect in removal under section 1445(c). We have, however, examined removals under section 1445(a), which bars removal of, among other actions, a Jones Act (46 U.S.C. § 688) claim filed in state court.4
In Lirette v. N.L. Sperry Sun, Inc., 820 F.2d 116, 117 (5th Cir.1987) (en banc), a worker sued his employer in state court, alleging negligence under the Jones Act. The defendant removed to federal court, and the plaintiff made no motion to remand within thirty days. Id. We held that the section 1445(a) “bar to removal may be waived by a litigant’s failure to object to such removal in district court.” Id. We reasoned that when an action is initially removed improperly and the case is tried on its merits, the subsequent issue becomes “ ‘not whether the case was properly removed, but whether the federal district court would have had jurisdiction of the case had it been filed in that court.’ ” Id. (quoting Grubbs v. General Elec. Credit Corp., 405 U.S. 699, 702, 92 S.Ct. 1344, 1347, 31 L.Ed.2d 612 (1972)).
In In re Shell Oil Co., 932 F.2d 1518, 1521 (5th Cir.), cert. denied, — U.S. -, 112 S.Ct. 914, 116 L.Ed.2d 814 (1991), we considered whether removal in violation of 28 U.S.C. § 1441(b),5 which prohibits removal if any defendant is a citizen of the state in which the action was brought, is a defect in removal procedure under section 1447(c). The plaintiffs sued several defendants, including two Texas citizens, in Texas state court, and all of the defendants joined in removal to federal court. 932 F.2d at 1518. Thirty-three days after re
4
Section 1445(a) states, In 46 U.S.C. § 688, the Jones Act incorporates the general provisions of the Federal Employer’s Liability Act, including § 1445(a).
5
.Section 1441(b) states,