Justice Kennedy
delivered the opinion of the Court.
An employee, as part of a termination agreement, signed a release of all claims against her-employer. In eonsider-[424]*424ation, she received severance pay in installments. The release, however, did not comply with specific federal statutory requirements for a release of claims under the Age Discrimination in Employment Act of 1967 (ADEA), 81 Stat. 602, 29 U. S. C. § 621 et seq. After receiving the last payment, the employee brought suit under the ADEA. The employer claims the employee ratified and validated the nonconforming release by retaining the moneys paid to secure it. The employer also insists the release bars the action unless, as a precondition to filing suit, the employee tenders back the moneys received. We disagree and rule that, as the release did not comply with the statute, it cannot bar the ADEA claim.
I
Petitioner Dolores Oubre worked as a scheduler at a power plant in Killona, Louisiana, run by her employer, respondent Entergy Operations, Inc. In 1994, she received a poor performance rating. Oubre’s supervisor met with her on January 17,1995, and gave her the option of either improving her performance during the coming year or accepting a voluntary arrangement for her severance. She received a packet of information about the severance agreement and had 14 days to consider her options, during which she consulted with attorneys. On January 31, Oubre decided to accept. She signed a release, in which she “agree[d] to waive, settle, release, and discharge any and all claims, demands, damages, actions, or causes of action ... that I may have against En-tergy _” App. 61. In exchange, she received six installment payments over the next four months, totaling $6,258.
The Older Workers poses specific requirements for releases covering ADEA claims. OWBPA, § 201,104 Stat. 983,29 U. S. C. §§ 626(f)(1) (B), (F), (G). In procuring the release, Entergy did not comply with the OWBPA in at least three respects: (1) Entergy did not give Oubre enough time to consider her options. (2) Entergy did not give Oubre seven days after she signed [425]*425the release to change her mind. And (3) the release made no specific reference to claims under the ADEA.
Oubre filed a charge of age discrimination with the Equal Employment Opportunity Commission, which dismissed her charge on the merits but issued a right-to-sue letter. She filed this suit against Entergy in the United States District Court for the Eastern District of Louisiana, alleging constructive discharge on the basis of her age in violation of the ADEA and state law. Oubre has not offered or tried to return the $6,258 to Entergy, nor is it clear she has the means to do so. Entergy moved for summary judgment, claiming Oubre had ratified the defective release by failing to return or offer to return the moneys she had received. The District Court agreed and entered summary judgment for Entergy. The Court of Appeals affirmed, 112 F. 3d 787 (CA5 1996) (per curiam), and we granted certiorari, 520 U. S. 1185 (1997).
II
The employer rests its case upon general principles of state contract jurisprudence. As the employer recites the rule, contracts tainted by mistake, duress, or even fraud are voidable at the option of the innocent party. See 1 Restatement (Second) of Contracts § 7, and Comment b (1979); e. g., Ellerin v. Fairfax Sav. Assn., 78 Md. App. 92, 108-109, 552 A. 2d 918, 926-927 (Md. Spec. App.), cert. denied, 316 Md. 210, 557 A. 2d 1336 (1989). The employer maintains, however, that before the innocent party can elect avoidance, she must first tender back any benefits received under the contract. See, e. g., Dreiling v. Home State Life Ins. Co., 213 Kan. 137, 147-148, 515 P. 2d 757, 766-767 (1973). If she fails to do so within a reasonable time after learning of her rights, the employer contends, she ratifies the contract and so makes it binding. 1 Restatement (Second) of Contracts, supra, § 7, Comments d, e; see, e. g., Jobe v. Texas Util. Elec. Co., No. 05-94-01368-CV, 1995 WL 479645, *3 (Tex. App.-Dallas, Aug. 14, 1995) (unpublished). The employer also invokes the [426]*426doctrine of equitable estoppel. As a rule, equitable estoppel bars a party from shirking the burdens of a voidable transaction for as long as she retains the benefits received under it. See, e. g., Buffum v. Peter Barceloux Co., 289 U. S. 227, 284 (1933) (citing state ease law from Indiana and New York). Applying these principles, the employer claims the employee ratified the ineffective release (or faces estoppel) by retaining all the sums paid in consideration of it. The employer, then, relies not upon the execution of the release but upon a later, distinct ratification of its terms.
These general rules may not be as as asserts. See generally Annot., 76 A. L. R. 344 (1932) (collecting cases supporting and contradicting these rules); Annot., 134 A. L. R. 6 (1941) (same). And in equity, a person suing to rescind a contract, as a rule, is not required to restore the consideration at the very outset of the litigation. See 3 Restatement (Second) of Contracts, supra, § 384, and Comment b; Restatement of Restitution § 65, Comment d (1936); D. Dobbs, Law of Remedies § 4.8, p. 294 (1973). Even if the employer’s statement of the general rule requiring tender back before one files suit were correct, it would be unavailing. The rule cited is based simply on the course of negotiation of the parties and the alleged later ratification. The authorities cited dp not consider the question raised by statutory standards for releases and a statutory declaration making nonconforming releases ineffective. It is the latter question we confront here.
In 1990, Congress amended the ADEA by passing the OWBPA. The OWBPA provides: “An individual may not waive any right or claim under [the ADEA] unless the waiver is knowing and voluntary.... [A] waiver may not be considered knowing and voluntary unless at a minimum” it satisfies certain enumerated requirements, including the three listed above. 29 U. S. C. § 626(f)(1).
The statutory command is clear: An employee “may not waive” an ADEA claim unless the waiver or release satisfies [427]*427the OWBPA’s requirements. The policy of the OWBPA is likewise clear from its title: It is designed to protect the rights and benefits of older workers. The OWBPA implements Congress’ policy via a strict, unqualified statutory stricture on waivers, and we are bound to take Congress at its word. Congress imposed specific duties on employers who seek releases of certain claims created by statute. Congress delineated these duties with precision and without qualification: An employee "may not waive” an ADEA claim unless the employer complies with the statute. Courts cannot with ease presume ratification of that which Congress forbids.
The OWBPA sets up its own regime for assessing the effect of ADEA waivers, separate and apart from contract law.
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Justice Kennedy
delivered the opinion of the Court.
An employee, as part of a termination agreement, signed a release of all claims against her-employer. In eonsider-[424]*424ation, she received severance pay in installments. The release, however, did not comply with specific federal statutory requirements for a release of claims under the Age Discrimination in Employment Act of 1967 (ADEA), 81 Stat. 602, 29 U. S. C. § 621 et seq. After receiving the last payment, the employee brought suit under the ADEA. The employer claims the employee ratified and validated the nonconforming release by retaining the moneys paid to secure it. The employer also insists the release bars the action unless, as a precondition to filing suit, the employee tenders back the moneys received. We disagree and rule that, as the release did not comply with the statute, it cannot bar the ADEA claim.
I
Petitioner Dolores Oubre worked as a scheduler at a power plant in Killona, Louisiana, run by her employer, respondent Entergy Operations, Inc. In 1994, she received a poor performance rating. Oubre’s supervisor met with her on January 17,1995, and gave her the option of either improving her performance during the coming year or accepting a voluntary arrangement for her severance. She received a packet of information about the severance agreement and had 14 days to consider her options, during which she consulted with attorneys. On January 31, Oubre decided to accept. She signed a release, in which she “agree[d] to waive, settle, release, and discharge any and all claims, demands, damages, actions, or causes of action ... that I may have against En-tergy _” App. 61. In exchange, she received six installment payments over the next four months, totaling $6,258.
The Older Workers poses specific requirements for releases covering ADEA claims. OWBPA, § 201,104 Stat. 983,29 U. S. C. §§ 626(f)(1) (B), (F), (G). In procuring the release, Entergy did not comply with the OWBPA in at least three respects: (1) Entergy did not give Oubre enough time to consider her options. (2) Entergy did not give Oubre seven days after she signed [425]*425the release to change her mind. And (3) the release made no specific reference to claims under the ADEA.
Oubre filed a charge of age discrimination with the Equal Employment Opportunity Commission, which dismissed her charge on the merits but issued a right-to-sue letter. She filed this suit against Entergy in the United States District Court for the Eastern District of Louisiana, alleging constructive discharge on the basis of her age in violation of the ADEA and state law. Oubre has not offered or tried to return the $6,258 to Entergy, nor is it clear she has the means to do so. Entergy moved for summary judgment, claiming Oubre had ratified the defective release by failing to return or offer to return the moneys she had received. The District Court agreed and entered summary judgment for Entergy. The Court of Appeals affirmed, 112 F. 3d 787 (CA5 1996) (per curiam), and we granted certiorari, 520 U. S. 1185 (1997).
II
The employer rests its case upon general principles of state contract jurisprudence. As the employer recites the rule, contracts tainted by mistake, duress, or even fraud are voidable at the option of the innocent party. See 1 Restatement (Second) of Contracts § 7, and Comment b (1979); e. g., Ellerin v. Fairfax Sav. Assn., 78 Md. App. 92, 108-109, 552 A. 2d 918, 926-927 (Md. Spec. App.), cert. denied, 316 Md. 210, 557 A. 2d 1336 (1989). The employer maintains, however, that before the innocent party can elect avoidance, she must first tender back any benefits received under the contract. See, e. g., Dreiling v. Home State Life Ins. Co., 213 Kan. 137, 147-148, 515 P. 2d 757, 766-767 (1973). If she fails to do so within a reasonable time after learning of her rights, the employer contends, she ratifies the contract and so makes it binding. 1 Restatement (Second) of Contracts, supra, § 7, Comments d, e; see, e. g., Jobe v. Texas Util. Elec. Co., No. 05-94-01368-CV, 1995 WL 479645, *3 (Tex. App.-Dallas, Aug. 14, 1995) (unpublished). The employer also invokes the [426]*426doctrine of equitable estoppel. As a rule, equitable estoppel bars a party from shirking the burdens of a voidable transaction for as long as she retains the benefits received under it. See, e. g., Buffum v. Peter Barceloux Co., 289 U. S. 227, 284 (1933) (citing state ease law from Indiana and New York). Applying these principles, the employer claims the employee ratified the ineffective release (or faces estoppel) by retaining all the sums paid in consideration of it. The employer, then, relies not upon the execution of the release but upon a later, distinct ratification of its terms.
These general rules may not be as as asserts. See generally Annot., 76 A. L. R. 344 (1932) (collecting cases supporting and contradicting these rules); Annot., 134 A. L. R. 6 (1941) (same). And in equity, a person suing to rescind a contract, as a rule, is not required to restore the consideration at the very outset of the litigation. See 3 Restatement (Second) of Contracts, supra, § 384, and Comment b; Restatement of Restitution § 65, Comment d (1936); D. Dobbs, Law of Remedies § 4.8, p. 294 (1973). Even if the employer’s statement of the general rule requiring tender back before one files suit were correct, it would be unavailing. The rule cited is based simply on the course of negotiation of the parties and the alleged later ratification. The authorities cited dp not consider the question raised by statutory standards for releases and a statutory declaration making nonconforming releases ineffective. It is the latter question we confront here.
In 1990, Congress amended the ADEA by passing the OWBPA. The OWBPA provides: “An individual may not waive any right or claim under [the ADEA] unless the waiver is knowing and voluntary.... [A] waiver may not be considered knowing and voluntary unless at a minimum” it satisfies certain enumerated requirements, including the three listed above. 29 U. S. C. § 626(f)(1).
The statutory command is clear: An employee “may not waive” an ADEA claim unless the waiver or release satisfies [427]*427the OWBPA’s requirements. The policy of the OWBPA is likewise clear from its title: It is designed to protect the rights and benefits of older workers. The OWBPA implements Congress’ policy via a strict, unqualified statutory stricture on waivers, and we are bound to take Congress at its word. Congress imposed specific duties on employers who seek releases of certain claims created by statute. Congress delineated these duties with precision and without qualification: An employee "may not waive” an ADEA claim unless the employer complies with the statute. Courts cannot with ease presume ratification of that which Congress forbids.
The OWBPA sets up its own regime for assessing the effect of ADEA waivers, separate and apart from contract law. The statute creates a series of prerequisites for knowing and voluntary waivers and imposes affirmative duties of disclosure and waiting periods. The OWBPA governs the effect under federal law of waivers or releases on ADEA claims and incorporates no exceptions or qualifications. The text of the OWBPA forecloses the employer’s defense, notwithstanding how general contract principles would apply to non-ADEA claims.
The rule proposed by the employer would frustrate the statute’s practical operation as well as its formal command. In many instances a discharged employee likely will have spent the moneys received and will lack the means to tender their return. These realities might tempt employers to risk noneomplianee with the OWBPA’s waiver provisions, knowing it will be difficult to repay the moneys and relying on ratification. We ought not to open the door to an evasion of the statute by this device.
Oubre’s cause of action arises under the ADEA, and the release can have no effect on her ADEA claim unless it complies with the OWBPA. In this case, both sides concede the release the employee signed did not comply with the requirements of the OWBPA. Since Oubre’s release did not comply [428]*428with the OWBPA’s stringent safeguards, it is unenforceable against her insofar as it purports to waive or release her ADEA claim. As a statutory matter, the release cannot bar her ADEA suit, irrespective of the validity of the contract as to other claims.
In further proceedings in this or other cases, courts may need to inquire whether the employer has claims for restitution, recoupment, or setoff against the employee, and these questions may be complex where a release is effective as to some claims but not as to ADEA claims. We need not decide those issues here, however. It suffices to hold that the release cannot bar the ADEA claim because it does not conform to the statute. Nor did the employee’s mere retention of moneys amount to a ratification equivalent to a valid release of her ADEA claims, since the retention did not comply with the OWBPA any more than the original release did. The statute governs the effect of the release on ADEA claims, and the employer cannot invoke the employee’s failure to tender back as a way of excusing its own failure to comply.
We reverse the judgment of the Court of Appeals and remand the case for further proceedings consistent with this opinion.
It is so ordered!
APPENDIX TO OPINION OP THE COURT
Older Workers Benefit Protection Act, § 201, 104 Stat. 983, 29 U. S. C. § 626(f):
(f) Waiver
(1) An individual may not waive any right or claim under this Act unless the waiver is knowing and voluntary. Except as provided in paragraph (2), a waiver may not be considered knowing and voluntary unless 'at a minimum—
(A) the waiver is part of an agreement between the individual and the employer that is written in a manner ealcu-[429]*429lated to be understood by such individual, or by the average individual eligible to participate;
(B) the waiver specifically refers to rights or claims arising under this Act;
(C) the individual does not waive rights or claims that may arise after the date the waiver is executed;
(D) the individual waives rights or claims only in exchange for consideration in addition to anything of value to which the individual already is entitled;
(E) the individual is advised in writing to consult with an attorney prior to executing the agreement;
(F)(i) the individual is given a period of at least 21 days within which to consider the agreement; or
(ii) if a waiver is requested in connection with an exit incentive or other employment termination program offered to a group or class of employees, the individual is given a period of at least 45 days within which to consider the agreement;
(G) the agreement provides that for a period of at least 7 days following the execution of such agreement, the individual may revoke the agreement, and the agreement shall not become effective or enforceable until the revocation period has expired;
(H) if a waiver is requested in connection with an exit incentive or other employment termination program offered to a group or class of employees, the employer (at the commencement of the period specified in subparagraph (F)) informs the individual in writing in a manner calculated to be understood by the average individual eligible to participate, as to—
(i) any class, unit, or group of individuals covered by such program, any eligibility factors for such program, and any time limits applicable to such program; and
(ii) the job titles and ages of all individuals eligible or selected for the program, and the ages of all individuals in the same job classification or organizational unit who are not eligible or selected for the program.
[430]*430(2) A waiver in settlement of a charge filed with the Equal Employment Opportunity Commission, or an action filed in court by the individual or the individual’s representative, alleging age discrimination of a kind prohibited under section 4 or 15 may not be considered knowing and voluntary unless at a minimum—
(A) subparagraphs (A) through (E) of paragraph (1) have been met; and
(B) the individual is given a reasonable period of time within which to consider the settlement agreement.
(3) In any dispute that may arise over whether any of the requirements, conditions, and circumstances set forth in sub-paragraph (A), (B), (C), (D), (E), CP), (G), or (H) of paragraph (1), or subparagraph (A) or (B) of paragraph (2), have been met, the party asserting the validity of a waiver shall have the burden of proving in a court of competent jurisdiction that a waiver was knowing and voluntary pursuant to paragraph (1) or (2).
(4) No waiver agreement may affect the Commission’s rights and responsibilities to enforce this Act. No waiver may be used to justify interfering with the protected right of an employee to file a charge or participate in an investigation or proceeding conducted by the Commission.