OPINION OF THE COURT
This case requires the Court to consider the contours of state sovereign immunity and under what circumstances such immunity may be waived.
Alleging violations of both federal and state antidiscrimination laws, Michael A. Lombardo (Lombardo) filed an employment discrimination complaint in the Court of Common Pleas of Luzerne County against the Commonwealth of Pennsylvania’s Department of Public Welfare and its Secretary, Estelle Richman, in her official capacity (collectively, the Commonwealth). Based on the federal claim, the Commonwealth removed the complaint to the United States District Court for the Middle District of Pennsylvania and sought partial dismissal on sovereign immunity grounds. The parties acknowledge that Pennsylvania has not statutorily waived its sovereign immunity for claims brought under the federal statute at issue, and they agree that the central question in this appeal is whether the Commonwealth waived such immunity by voluntarily removing this matter from state to federal court.
The District Court denied the Commonwealth’s motion to dismiss, reasoning that *193 the Commonwealth waived its Eleventh Amendment immunity by removing the case. We agree that the Commonwealth’s voluntary removal unequivocally invoked the jurisdiction of the federal courts and thereby waived the Commonwealth’s Eleventh Amendment immunity from suit in a federal forum.
We hold, however, that state sovereign immunity includes both immunity from suit in federal court and immunity from liability, and that a State may waive one without waiving the other. Because the Commonwealth’s removal did not waive its immunity from liability, we will reverse the judgment of the District Court and remand with instructions to grant the Commonwealth’s motion for partial dismissal.
I.
Lombardo worked at the White Haven Center, a state-operated facility for the developmentally disabled located in White Haven, Pennsylvania, for more than 38 years. In 2003, Lombardo was passed over for a promotion. Lombardo, 61 years old at the time, believed that this action was due to his age. On March 23, 2006, he filed a complaint asserting two grounds for relief: violation of the federal Age Discrimination in Employment Act (ADEA), 29 U.S.C. §§ 621-634; and violation of the Pennsylvania Human Relations Act (PHRA), 43 Pa. Cons.Stat. §§ 951-963. Lombardo sought equitable relief and damages.
On April 7, 2006, based on the ADEA claim, the Pennsylvania Department of Public Welfare (the Department) removed the case to the United States District Court for the Middle District of Pennsylvania and moved for dismissal. Lombardo then amended his complaint to add a second defendant — the Secretary of Public Welfare, Estelle Richman, in her official capacity. The Commonwealth moved for partial dismissal of the amended complaint on the ground that its Eleventh Amendment immunity barred Lombardo’s claims under the ADEA, save for his claim for prospective injunctive relief against the Secretary.
1
The District Court denied the motion to dismiss, holding that the Commonwealth’s voluntary removal of the case to federal court waived its Eleventh Amendment immunity under
Lapides v. Board of Regents of the University System of Georgia,
II.
The District Court had subject matter jurisdiction pursuant to 28 U.S.C. §§ 1331 and 1343. Defendants appeal from the District Court’s order denying a claim of sovereign immunity by the Department, a state agency. We have subject matter jurisdiction under 28 U.S.C. § 1291, as such orders are immediately appealable under the collateral order doctrine.
See Puerto Rico Aqueduct & Sewer Auth. v. Metcalf & Eddy, Inc,
III.
Our Constitution established a system of “dual sovereignty between the States and the Federal Government,”
Gregory v. Ashcroft,
******
For the reasons that follow, we hold that state sovereign immunity is not a unitary concept. We can discern two distinct types of state sovereign immunity: immunity from suit in federal court and immunity from liability.
A.
The immunity of States from suit in the federal courts is a fundamental aspect of state sovereignty.
N. Ins. Co. of N.Y. v. Chatham County,
Only five years after the adoption of the Constitution, however, the Supreme Court in
Chisholm v. Georgia,
Accordingly, it is clear that the States possess immunity from suit in the *195 federal courts, also known as Eleventh Amendment immunity.
B.
The Supreme Court has also recognized, however, that “the Eleventh Amendment does not define the scope of the States’ sovereign immunity; it is but one particular exemplification of that immunity.”
Fed. Mar. Comm’n v. S.C. State Ports Auth.,
We look to state law to determine if the Commonwealth maintains a separate immunity from liability. Under Pennsylvania law, the Commonwealth enjoys sovereign immunity unless the General Assembly “specifically waives sovereign immunity.” 1 Pa. Cons.Stat. § 2310. The state assembly has not specifically waived immunity for ADEA violations, nor are such violations included in the statutory exceptions to sovereign immunity.
See
42 Pa. Cons.Stat. § 8522 (listing “acts by a Commonwealth party” that “may result in the imposition of liability on the Commonwealth” for which “the defense of sovereign immunity shall not be raised to claims for damages”);
see also Chittister v. Dep’t of Cmty. & Econ. Dev.,
As a result, we conclude that the Commonwealth possesses immunity from liability regarding claims under the ADEA.
IV.
We now turn to whether, in this case, the Commonwealth has waived: (1) its immunity from suit in federal court; or (2) its immunity from liability.
A.
A State’s immunity from suit is not absolute. Congress may abrogate a State’s sovereign immunity “in the exercise of its power to enforce the Fourteenth Amendment,”
2
and a State may consent to
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suit by making a clear declaration that it intends to submit itself to federal court jurisdiction.
3
Coll. Sav. Bank v. Fla. Prepaid Postsecondary Educ. Expense Bd.,
Furthermore, a State may waive its immunity from suit by invoking federal court jurisdiction voluntarily.
Id.
at 675,
We begin with the facts of
Lapides.
In 2001, Paul Lapides, a professor employed by the Georgia state university system, filed an action against the university system’s Board of Regents in state court. Georgia had already consented to suit in its own courts regarding the type of claims Lapides brought. Georgia’s Attorney General removed the case to federal district court and sought dismissal on Eleventh Amendment grounds. The Supreme Court held unanimously that Georgia’s removal from state to federal court waived its Eleventh Amendment immunity, but limited its holding “to the context of state-law claims, in respect to which the State has explicitly waived immunity from state-court proceedings.”
Despite expressly limiting its holding to state-law claims from which immunity has been explicitly waived, the
Lapides
Court utilized broad language regarding waiver and removal. First, the Court referenced the “general principle” that immunity is waived where a State voluntarily invokes a federal court’s jurisdiction.
Applying these principles to the matter at hand, we conclude that the Commonwealth waived its Eleventh Amendment immunity from private suit in a federal forum when it voluntarily removed this case to federal court.
5
When a State, facing suit in its own courts, purposefully requests a federal forum, it expresses a clear intent to waive immunity from suit. While
Lapides
limited its holding to state-law claims for which immunity was waived in state court, it also teaches that, generally, “removal is a form of voluntary invocation of a federal court’s jurisdiction suffldent to waive the State’s otherwise valid objection to litigation of a matter ... in a federal forum.”
In
Estes,
the Court of Appeals for the Tenth Circuit held that a State’s removal to federal court of a case including both state law and federal law claims constituted a waiver of Eleventh Amendment immunity for both categories of claims.
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We hold that the Commonwealth’s removal of federal-law claims to federal court effected a waiver of immunity from suit in federal court. Our holding today does not affect a State’s ability to raise sovereign immunity when it is involuntarily brought into federal court. It is only when a State removes federal-law claims from state court to a federal forum that it “submits its rights for judicial determination,”
Gunter,
B.
As stated previously, the Commonwealth possesses immunity from liability under 1 Pa. Cons.Stat. § 2310, save for certain specifically enumerated tort claims for damages in state court. See 42 Pa. Const. Stat. § 8522. The question we now consider is whether the Commonwealth nonetheless waived its immunity from liability by removing this case to federal court. 7
A State may waive its immunity from liability, but such a waiver must be express and unequivocal.
See Coll. Sav. Bank,
We hold that while voluntary removal waives a State’s immunity from suit in a federal forum, the removing State retains all defenses it would have enjoyed had the matter been litigated in state court, including immunity from liability.
8
*199
The Supreme Court has suggested that a State may waive its immunity from liability without waiving its immunity from suit in federal court,
see Atascadero State Hosp. v. Scanlon,
C.
By affirmatively selecting a federal forum for litigation of this case, the Commonwealth invoked federal court jurisdiction and waived its immunity from suit.
See Lapides,
V.
For the foregoing reasons, we will reverse the judgment of the District Court and remand with instructions to grant the Commonwealth’s motion for partial dismissal.
Notes
. The Commonwealth also moved to dismiss the PHRA claim on a statute of limitations ground. The District Court denied the motion, holding that this issue turned on questions of fact which could not be resolved in the context of a motion to dismiss. That holding is not before this Court, and the Commonwealth did not assert immunity as to Lombardo’s PHRA claim.
. For Congress to "authorize a suit in the exercise of its power to enforce” Article I, § 5 of the Fourteenth Amendment, Congress "must identify conduct transgressing the Fourteenth Amendment's substantive provisions, and must tailor its legislative scheme to
*196
remedying or preventing such conduct."
Fla. Prepaid Postsecondary Educ. Expense Bd. v. Coll. Sav. Bank,
. Pennsylvania has withheld its consent to suit in federal court. 42 Pa. Cons.Stat. § 8521(b).
See Laskaris v. Thornburgh,
. Georgia claimed that it agreed to remove in order to provide its co-defendants, the officials sued in their personal capacities, with the "generous interlocutory appeal provisions” available only in federal court.
Lapides,
. Since 2002, several appeals courts have addressed the scope of
Lapides'
waiver-by-removal rule. The Courts of Appeals for the Ninth and Tenth Circuits have taken a broad view, extending the rule to all state and federal claims.
See Embury v. King,
. While not determinative in
Lapides
or in the case at hand, we note that the Supreme Court's jurisprudence has not been entirely consistent in the view that the Eleventh Amendment restricts subject matter jurisdiction. Like subject matter jurisdiction, the
*198
Court permits an Eleventh Amendment immunity claim to be raised for the first time on appeal.
See Edelman,
. Lombardo asserts that the Commonwealth has waived this claim, since it did not raise the matter in the District Court. Appellee Br. at 18.
See Huber v. Taylor,
. We have determined that a removing State waives its Eleventh Amendment immunity
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from suit in a federal forum but retains its immunity from liability. Several courts of appeals have differed in the label given to the immunity retained by a removing State, separate and apart from the Eleventh Amendment.
See Meyers,
