OPINION
Appellant, Prairie View A <& M University, brings this interlocutory appeal from an order denying its plea to the jurisdiction. See Tex. Civ. PRAC. & RemlCode Ann. § 51.014(a)(8) (Vernon 2008) (allowing interlocutory appeal of order that “grants or denies a plea to the jurisdiction by a governmental unit”). The trial court determined appellee, Diljit K. Chatha, timely filed her suit against her employer, the University, pursuant to the Texas Commission on Human Rights Act (“the Texas Act”), 1 and, therefore, the court had jurisdiction. In two issues, the University contends the trial court lacks jurisdiction because (1) Chatha’s employment discrimination claims were untimely filed under the Texas Act and (2) Chatha failed to follow the provisions of the Texas Act resulting in no waiver of sovereign immunity in this ease. We conclude the trial court properly denied the plea to the jurisdiction. We affirm.
Background
Chatha teaches English at the University. Chatha, who is of Indian national origin, began working for the University in 1987. In 2004, Chatha was promoted to full professor. On September 25, 2006, Chatha filed a complaint with the Equal Employment Opportunity Commission (EEOC) alleging discrimination on the basis of race and national origin. The Texas Workforce Commission-Civil Rights Division issued Chatha a right-to-sue letter and she filed this suit. Chatha alleged she is underpaid as compared to less qualified faculty members.
In its plea to the jurisdiction challenging the subject matter jurisdiction of the court, the University asserted Chatha did not timely file her complaint. Specifically, the University contends that the adverse ac *405 tion claimed by Chatha occurred in 2004 when she was promoted to full professor at a lower pay rate, which was more than 180 days before the time she filed suit in 2006 under the Texas Act. The University also claimed that because Chatha did not meet the elements of the Texas Act she failed to show the State had waived its immunity. Chatha responded that her complaint was timely filed under the Lilly Ledbetter Fan-Pay Act (hereafter called “the Ledbetter Act”), which amended Title VII of the Civil Rights Act of 1964 to allow for claims based on her most recent paycheck at a lower rate. Asserting that the Ledbetter Act is applicable to the Texas Act through the stated policy of the Texas Act, Chatha contends that her claim was timely and a waiver of the State’s immunity was established.
Applicable Law Concerning Jurisdiction in Employment Action Claim
A plea to the jurisdiction is a dilatory plea that challenges the trial court’s subject matter jurisdiction.
Tex. Dep’t of Parks & Wildlife v. Miranda,
The Texas Act states, “A complaint ... must be filed not later than the 180th day after the date the alleged unlawful employment practice occurred.” ■ Tex. Lab.Code Ann. § 21.202 (Vernon 2006);
Davis v. Autonation USA Corp.,
Timeliness of Filing Complaint of Discrimination
In its first issue, the University contends (A) under the law before the enactment of the Ledbetter Act, Chatha’s complaint was untimely due to her failure to file it within 180 days of the date she was informed of the salary of which she now complains, and (B) the Ledbetter Act is inapplicable to the Texas Act.
A. Law Before Enactment of Ledbet-ter Act
Before the enactment of the Ledbetter Act, (1) Texas courts looked to federal courts’ interpretation of Title VII to analyze the meaning of the Texas Act, and (2) federal and Texas courts rejected the continuing violation doctrine in unequal pay cases.
1. Texas Courts Reliance on Federal Interpretation of Title VII
Although the Texas Act states that a complaint “must be filed not later than the 180th day after the date the alleged unlawful employment practice occurred,” it does not define when an unlawful employment *406 practice occurs. Tex. Lab.Code Ann. § 21.202 (Vernon 2006). Before the Led-better Act, Title VII was worded similarly to the Texas Act, stating, “A charge under this section shall be filed within one hundred and eighty days after the alleged unlawful employment practice occurred ...” 42 U.S.C.S § 2000e~5(e)(l) (Lexis-Nexis 2005).
Because the Texas Act does not define when an unlawful employment practice occurs, Texas courts look to the federal courts interpretation of Title VII for guidance in defining the term.
See Auto-Zone, Inc. v. Reyes,
2. Inapplicability of Continuing Violation Doctrine
The continuing violation doctrine applies when an unlawful employment practice manifests itself over time rather than as a series of discrete acts.
See Davis,
B. Applicability of Ledbetter Act to Texas Act
Chatha contends (1) the Ledbetter Act changed the law to now allow for claims based on when a person is affected by the application of the discriminatory act, and (2) the Ledbetter Act should be applied to the Texas Act because the policy of the Texas Act is to be consistent with Title VII.
1. Ledbetter Act
In response to the Ledbetter decision, Congress passed the Ledbetter Act to abrogate the Supreme Court’s decision. *407 Lilly Ledbetter Fair Pay Act of 2009, Pub. L. 11-2, 123 Stat. 5 (2009). Among other changes, Title VII was amended by adding the following definition of “occurrence”:
For purposes of this section, an unlawful employment practice occurs, with respect to discrimination in compensation in violation of this subchapter, when a discriminatory compensation decision or other practice is adopted, when an individual becomes subject to a discriminatory compensation decision or other practice, or when an individual is affected by application of a discriminatory compensation decision or other practice, including each time wages, benefits, or other compensation is paid, resulting in whole or in part from such a decision or other practice.
42 U.S.C.S. § 2000e-5(e)(3)(A) (LexisNexis Supp. 2009) (emphasis added). Thus, the law applicable to Title VII is no longer the Supreme Court’s
Ledbetter
holding that an unlawful employment practice occurs with respect to discrimination in compensation when the salary decision is made.
See Klebe v. Univ. of Tex. Sys.,
2. Application of Ledbetter Act to Texas Act
We conclude that the Ledbetter Act’s current definition describing when an unlawful practice occurs in Title VII should be applied to a claim of compensation discrimination brought under the Texas Act. We reach this conclusion for three reasons: (a) the express policy of the Texas Act is to execute the policy in Title VII; (b) federal district courts that have addressed this identical question have reasoned that the Ledbetter Act applies to the Texas Act; and (c) the University’s arguments stating reasons the Ledbetter Act should not apply are unpersuasive.
a. Express Policy of Texas Act
The Texas Act states that its purpose is to “provide for the execution of the policies of Title VII of the Civil Rights Act of 1964 and its subsequent amendments.” Tex. Lab.Code Ann. § 21.001(1);
see AutoZone,
b. Analysis of Federal District Courts
Two federal district courts in Texas have addressed this identical question and reasoned that Texas courts would apply the Ledbetter Act to the Texas Act.
See Klebe,
c. The University’s Arguments
The University suggests that the Led-better Act is inapplicable to the Texas Act because the Texas Act is not intended to be identical to Title VII. Although the Texas Act and Title VII are not identical, the Supreme Court of Texas has historically looked to the federal courts’ interpretation for determining when an unlawful employment practice “occurs” because that term is undefined in the Texas Act and Texas’s policy is to execute the policy of Title VII.
See AutoZone,
The University also suggests that the Ledbetter Act is inapplicable to the Texas Act because the Texas Act does not automatically incorporate amendments to Title VII. The University cites the Texas Act section dealing with disparate impact cases involving age discrimination. “To determine the availability of and burden of proof applicable to a disparate impact case involving age discrimination, the court shall apply the judicial interpretation of the Age Discrimination in Employment Act of 1967 and its subsequent amendments (29 U.S.C. Section 621 et seq.).” Tex. Lab.Code Ann. § 21.122(b) (Vernon 2006). The University contends that because the Texas Act specifies that courts “shall” apply federal cases in disparate impact cases involving age discrimination, the Legislature must have meant to exclude the automatic application of federal law to discrimination cases not involving age discrimination. In support of this, the University relies upon the doctrine of
ex-pressio unius est exlusio alterius
or “the expression of one implies the exclusion of others.”
See Mid-Century Ins. Co. of Texas v. Kidd,
*409 The University contends the Ledbetter Act is inapplicable because the Texas Legislature has not incorporated similar language into the Texas Act. Specifically, the University contends that shortly after the Ledbetter Act was enacted into law, Senate Bill 986 was introduced. Tex. S.B. 986, 81st Leg., R.S. (2009). Senate Bill 986 contained language similar to the Ledbet-ter Act, stating in pertinent part,
With respect to an allegation of discrimination in payment of compensation ..., an unlawful employment practice occurs each time: ... an individual is adversely affected by application of a discriminatory compensation decision or other practice, including each time wages, benefits, or other compensation affected wholly or partly by such a decision or other practice is paid.
See
Tex. S.B. 986, 81st Leg., R.S. (2009). Senate Bill 986 was referred to the Business and Commerce Committee, but it never made it beyond the committee.
See
Tex. S.B. 986, 81st Leg., R.S. (2009), bill history,
available at
http://www.capitol. state.tx.us/BillLookup/Actions.aspx?Leg Sess=81R & Bill=SB986. The University invites us to speculate on the reasons the bill did not pass and become part of the Act, stating, among other possibilities, that “perhaps the Legislature intends to wait and see how the Ledbetter Act’s provisions are interpreted by the courts before deciding whether to adopt a similar provision and determining how it should be crafted.” However, the Texas supreme court has stated, “we attach no controlling significance to the Legislature’s failure to enact [legislation].”
Entergy Gulf States, Inc. v. Summers,
Applying the definition of “occurrence” from Title VII to the Texas Act, the alleged unlawful employment practice at issue is not limited to the pay decision made in 2004 and includes the time when Chatha was affected by the decision in her most recent paycheck.
See
42 U.S.C.S. § 2000e-5(e)(3)(A);
Lohn,
We overrule the University’s first issue.
Having determined that Chatha’s pleadings met the requirements for a claim under the Texas Act, we overrule the University’s second issue that alleges the trial court erred by granting the University’s plea to the jurisdiction because the Legislature’s waiver of sovereign immunity applies only where “the procedures outlined in the statute [waiving immunity] have been met.” The University contends an ambiguity in the Texas Act should be resolved in favor of a finding that the Legislature did not waive the University’s immunity. However, the Texas supreme court held the Texas Act contains an unambiguous waiver of immunity.
See Mission Consol. Indep. Sch. Dist. v. Garcia,
Conclusion
We affirm the order of the trial court.
Notes
. Tex. Lab Code Ann §§ 21.001-.556 (Vernon 2006).
