opinion: EDELMAN v. LYNCHBURG COLLEGE
  No. 00-1072.
  Argued January 8, 2002 —
  Decided March 19,2002
  Eric Schnapper argued the cause for petitioner. With him on the briefs was Elaine Charlson Bredehoft.
  Lisa S. Blatt argued the cause for the United States et al. as amici curiae urging reversal. With her on the brief were Solicitor General Olson, Assistant Attorney General Boyd, Deputy Solicitor General Clement, Paul R. Q. Wolf son, Philip B. Sklover, and Barbara L. Sloan.
  Alexander W. Bell argued the cause for respondent. With him on the brief was Mary V. Barney.
  Ann Elizabeth Reesman and Rae T. Vann filed a brief for the Equal Employment Advisory Council as amicus curiae urging affirmance.
  Paula A Brantner filed a brief for the National Employment Lawyers Association as amicus curiae.
  Justice Souter
  delivered the opinion of the Court.
  The scheme of redress for employment discrimination under Title VII of the Civil Rights Act of 1964, as amended, requires a complainant to file a “charge” with the Equal Employment Opportunity Commission within a certain time after the conduct alleged, 78 Stat. 259, 42 U. S. C. § 2000e-5(e)(1) (1994 ed.), and to affirm or swear that the allegations are true, §2000e-5(b). The issue here is the validity of an EEOC regulation permitting an otherwise timely filer to verify a charge after the time for filing has expired. We sustain the regulation.
  I
  On June 6,1997, respondent Lynchburg College denied academic tenure to petitioner Leonard Edelman, who faxed a letter to an EEOC field office on November 14, 1997, claiming “gender-based employment discrimination, exacerbated by discrimination on the basis of... national origin and religion.” App. 52. Edelman made no oath or affirmation.
  On November 26,1997, Edelman’s lawyer wrote to the field office requesting an interview with an EEOC investigator and stating his “understanding that delay occasioned by the interview will not compromise the filing date, which will remain as November 14, 1997.” Id., at 54. An EEOC employee replied to Edelman and advised him to arrange an interview with a member of the field office. Without referring to the lawyer’s letter, the employee reminded Edelman that “a charge of discrimination must be filed within the time limits imposed by law.” Id., at 57. In Edelman’s case, the filing period was 300 days after the alleged discriminatory practice.
  After the interview, the EEOC sent Edelman a Form 5 Charge of Discrimination for him to review and verify by oath or affirmation. On April 15, 1998, 313 days after the June 6, 1997, denial of tenure, the EEOC received the verified Form 5, which it forwarded to the College for response. After completing an investigation, the EEOC issued Edel-man a notice of right to sue.
  Edelman first sued in a Virginia state court on various state-law claims, but later added a cause of action under Title VII, 42 U. S. C. §2000e~2(a)(l). The College then removed the case to Federal District Court and moved to dismiss, claiming that Edelman’s failure to file the verified Form 5 with the EEOC within the applicable filing period was a bar to subject-matter jurisdiction. Edelman replied that his November 1997 letter was a timely filed charge and that under an EEOC regulation, 29 CFR § 1601.12(b) (1997), the verification on the Form 5 related back to the letter.
  The District Court found, however, that the November letter was not a “charge” within the meaning of Title VII because neither Edelman nor the EEOC treated it as one, App. to Pet. for Cert. 22-24, with the consequence that there was no timely filing to which the verification on Form 5 could relate back. After finding no ground for equitable tolling of the filing requirements, the District Court dismissed the Title VII complaint and remanded the state-law claims. Id., at 24-25.
  A divided panel of the Court of Appeals affirmed. 228 F. 3d 503, 512 (CA4 2000). The majority held that the plain language of the statute foreclosed the EEOC regulation allowing a later oath to relate back to an earlier charge. The majority reasoned that the verification and filing provisions in §706 of Title VII were interdependent in defining “charge”: “Because a charge requires verification . . . , and because a charge must be filed within the limitations period, ... it follows that a charge must be verified within the limitations period.” Id., at 508..
  Judge Luttig concurred only in the judgment. Id., at 512-513. He said that although the majority probably had “the better interpretation” of the statute, id., at 513, its reading of the filing and verification requirements as one was not compelled by the language, and the court was “bound to give deference” to the EEOC’s construction, ibid. He nonetheless joined in the judgment for the District Court’s reasons.
  Because of a conflict among the Courts of Appeals, we granted certiorari, 533 U. S. 928 (2001), and now reverse.
  II
  A
  Section 706 of the Civil Rights Act of 1964, as amended, 42 U. S. C. § 2000e-5, governs the filing of charges of discrimination with the EEOC. Section 706(b) requires “[c]harges” to “be in writing under oath or affirmation . . . containing] such information and ... in such form as the Commission requires.” § 2000e-5(b). Section 706(e)(1) provides that “[a] charge .. . shall be filed within one hundred and eighty [or in some cases, three hundred] days after the alleged unlawful employment practice occurred.” §2000e-5(e)(l).
  Neither provision defines “charge,” which is likewise undefined elsewhere in the statute. Section 706(b) merely requires the verification of a charge, without saying when it must be verified; § 706(e)(1) provides that a charge must be filed within a given period, without indicating whether the charge must be verified when filed. Neither provision incorporates the other so as to give a definition by necessary implication.
  The assumption of the Court of Appeals that the two provisions must be read as one, with “charge” defined as “under oath or affirmation,” was thus a structural and logical leap. Nor is the gap bridged by the rule of common sense that statutes are to be read as a whole, see United States v. Morton, 467 U. S. 822, 828 (1984). Although reading the two provisions together would not be facially inconsistent, doing that would ignore the two quite different objectives of the timing and verification requirements, which stand in the way of reading “charge” to subsume them both by definition. The point of the time limitation is to encourage a potential charging party to raise a discrimination claim before it gets stale, for the sake of a reliable result and a speedy end to any illegal practice that proves out. The verification requirement has the different object of protecting employers from the disruption and expense of responding to a claim unless a complainant is serious enough and sure enough to support it by oath subject to liability for perjury. This object, however, demands an oath only by the time the employer is obliged to respond to the charge, not at the time an employee files it with the EEOC. There is accordingly nothing plain in reading “charge” to require an oath by definition. Questionable would be the better word.
  B
  The statute is thus open to interpretation and the regulation addresses a legitimate question. Before we touch on the merits of the EEOC’s position, however, two threshold matters about the status of the regulation can be given short shrift. The first is whether the agency’s rulemaking exceeded its authority to adopt “suitable procedural regulations,” 42 U. S. C. § 2000e-12(a), and instead addressed a substantive issue over which the EEOC has no rulemaking power, see EEOC v. Arabian American Oil Co., 499 U. S. 244, 257 (1991); General Elec. Co. v. Gilbert, 429 U. S. 125, 141 (1976). Although the College argues that the EEOC’s regulation “alterfs] a substantive requirement included by Congress in the statute,” Brief for Respondent 32-33, this is really nothing more than a recast of the plain language argument; the College is merely restating the position we just rejected, that Congress defined “charge” as a verified accusation.
  The other issue insignificant in this case, however prominent it is in much of the litigation that goes on over agency rulemaking, is the degree of deference owed to the regulation by reviewing courts. We agree with the Government as amicus that deference under Chevron U. S. A. Inc. v. Natural Resources Defense Council, Inc., 467 U. S. 837, 843-844 (1984), does not necessarily require an agency’s exercise of express notice-and-comment rulemaking power, see Brief for United States et al. as Amici Curiae 19, n. 11; we so observed in United States v. Mead Corp., 533 U. S. 218, 230-231 (2001) (“[W]e have sometimes found reasons for Chevron deference even when no such administrative formality was required and none was afforded”). But there is no need to resolve any question of deference here. We find the EEOC rule not only a reasonable one, but the position we would adopt even if there were no formal rule and we were interpreting the statute from scratch. Because we so clearly agree with the EEOC, there is no occasion to defer and no point in asking what kind of deference, or how much.
  c
  A complaint to the EEOC starts the agency down the road to investigation, conciliation, and enforcement, and it is no small thing to be called upon to respond. As we said before, the verification provision is meant to provide some degree of insurance against catchpenny claims of disgruntled, but not necessarily aggrieved, employees. In requiring the oath or affirmation, however, Congress presumably did not mean to affect the nature of Title VII as “a remedial scheme in which laypersons, rather than lawyers, are expected to initiate the process.” EEOC v. Commercial Office Products Co., 486 U. S. 107,124 (1988); Love v. Pullman Co., 404 U. S. 522, 527 (1972). Construing § 706 to permit the relation back of an oath omitted from an original filing ensures that the lay complainant, who may not know enough to verify on filing, will not risk forfeiting his rights inadvertently. At the same time, the EEOC looks out for the employer’s interest by refusing to call for any response to an otherwise sufficient complaint until the verification has been supplied.
  We would be hard pressed to take issue with the EEOC’s position after deciding Becker v. Montgomery, 532 U. S. 757 (2001), last Term. In that case, we considered whether the Federal Rule of Civil Procedure 11 signature requirement entailed the dismissal of a notice of appeal that was timely filed in the district court but was not signed within the filing period. We held that while the timing and content requirements for the notice of appeal were “jurisdictional in nature,” nothing prevented later cure of the signature defect, 532 U. S., at 765. There is no reason to think that relation back of the oath here is any less reasonable than relation back of the signature in Becker. Both are aimed at stemming the urge to litigate irresponsibly, and if relation back is a good rule for courts of law, it would be passing strange to call it bad for an administrative agency. In fact, it would be passing strange to disagree with the EEOC even without Becker, for a long history of practice with oath requirements supports the relation-back cure.
  Where a statute or supplemental rule requires an oath, courts have shown a high degree of consistency in accepting later verification as reaching back to an earlier, unverified filing. This background law not only persuades by its regularity over time but points to tacit congressional approval of the EEOC’s position, Congress being presumed to have known of this settled judicial treatment of oath requirements when it enacted and later amended Title VIL
  This presumption is complemented by the fact that Congress amended Title VII several times without once casting doubt on the EEOC’s construction. During the debates over the Equal Employment Opportunity Act of 1972, amending the Civil Rights Act of 1964, the text of the EEOC procedural regulations, including the predecessor of § 1601.12(b), was placed in the Congressional Record. 118 Cong. Rec. 718 (1972). By then the regulation was six years old, and had been upheld and applied by the federal courts. By amending the law without repudiating the regulation, Congress “suggests its consent to the Commission’s practice.” EEOC v. Associated Dry Goods Corp., 449 U. S. 590, 600, n. 17 (1981); see also EEOC v. Shell Oil Co., 466 U. S. 54, 69 (1984).
  Ill
  We accordingly hold the EEOC’s relation-back regulation to be an unassailable interpretation of §706 and therefore reverse. Our judgment does not, however, reach the conclusion drawn by the District Court, and the single judge ■ on the Court of Appeals, that Edelman’s letter was not a charge under the statute because neither he nor the EEOC treated it as one. It is enough to say here that at the factual level their view has some support. Although § 706(e)(1) of Title VII provides that the “notice of the charge . . . shall be served upon the person against whom such charge is made within ten days” of filing with the EEOC, 42 U. S. C. §§2000e-5(b) and (e)(1), the Government’s lawyer acknowledged at oral argument that the EEOC failed to “comply with its obligation to provide the employer with notice” within 10 days after receiving Edelman’s letter of November 14, 1997. Tr. of Oral Arg. 16. Edelman’s counsel agreed with the Government that the significance of the delayed notice to the College would be open on remand. Id., at 9-10, 17.
  Accordingly, we reverse the judgment of the Court of Appeals and remand the case for further proceedings consistent with this opinion.
  It is so ordered.
  A Title VII complainant generally has 180 days from the time of the alleged unlawful employment practice to file with the EEOC, 42 U. S. C. § 2000e-5(e)(l) (1994 ed.), but a 300-day filing period applies if the charging party “institute^] proceedings with a State or local agency with authority to grant or seek relief” from unlawful employment practices. Ibid.; see also EEOC v. Commercial Office Products Co., 486 U. S. 107, 110 (1988). Virginia has such an agency, operating under a work-sharing agreement with the EEOC. See Tinsley v. First Union Nat. Bank, 155 F. 3d 435, 439-442 (CA4 1998).
  The regulation provides in relevant part that “a charge is sufficient when the Commission receives from the person making the charge a written statement sufficiently precise to identify the parties, and to describe generally the action or practices complained of. A charge may be amended to cure technical defects or omissions, including failure to verify the charge, or to clarify and amplify allegations made therein. Such amendments and amendments alleging additional acts which constitute unlawful employment practices related to or growing out of the subject matter of the original charge will relate back to the date the charge was first received.”
  Section 706(b) reads in relevant part that “[wjhenever a charge is filed by or on behalf of a person claiming to be aggrieved, or by a member of the Commission, alleging that an employer . . . has engaged in an unlawful employment practice, the Commission shall serve a notice of the charge ... on such employer . . . within ten days, and shall make an investigation thereof. Charges shall be in writing under oath or affirmation and shall contain such information and be in such form as the Commission requires.” 42 U. S. C. § 2000e-5(b). As to filing, § 706(e)(1) provides that “[a] charge under this section shall be filed within one hundred and eighty days after the alleged unlawful employment practice occurred and notice of the charge . . . shall be served upon the person against whom such charge is made within ten days thereafter, except that in a case of an unlawful employment practice with respect to which the person aggrieved has initially instituted proceedings with a State or local agency with authority to grant or seek relief from such practice ..., such charge shall be filed . . . within three hundred days after the alleged unlawful employment practice occurred.” § 2000e-5(e)(l).
  Compare, e. g., 228 F. 3d 503, 509 (CA4 2000) (case below); Shempert v. Harwick Chemical Corp., 151 F. 3d 793, 796-797 (CA8 1998), with Philbin v. General Electric Capital Auto Lease, Inc., 929 F. 2d 321, 323-324 (CA7 1991) (per curiam); Peterson v. Wichita, 888 F. 2d 1307, 1308 (CA10 1989), cert. denied, 495 U. S. 932 (1990); Casavantes v. California State Univ., 732 F. 2d 1441,1443 (CA9 1984); Price v. Southwestern Bell Tel. Co., 687 F. 2d 74, 77, and n. 3 (CA5 1982).
  See Delaware State College v. Ricks, 449 U. S. 250, 256-257 (1980) (“Limitations periods, while guaranteeing the protection of the civil rights laws to those who promptly assert their rights, also protect employers from the burden of defending claims arising from employment decisions that are long past”).
  See EEOC v. Shell Oil Co., 466 U. S. 54, 76, n. 32 (1984) (“The function of an oath is to impress upon its taker an awareness of his duty to tell the truth”).
  Title VII does not require the EEOC to utilize notice-and-comment procedures. Section 713(a) of Title VII requires the procedural regulations to “be in conformity with the standards and limitations” of the Administrative Procedure Act, 5 U. S. C. §§551-559. 42 U. S. C. §2000e-12(a) (1994 ed.). And the Administrative Procedure Act, 5 U. S. C. § 553(b), excepts “rules of agency organization, procedure, or practice” from notice-and-comment procedures unless required by statute.
  We, of course, do not mean to say that the EEOC’s position is the “only one permissible.” See Commercial Office Products, 486 U. S., at 125 (O’Connor, J., concurring in part and concurring in judgment). The agency might, for example, have decided that the time to test the complainant’s seriousness is before the agency expends any effort on the case, and so have required a verified complaint prior to interview. JUSTICE O’Connor suggests, see post, at 122 (opinion concurring in judgment), that recognizing this implies that a sphere of deference is appropriate, and so resolves the Chevron question. But not all deference is deference under Chevron, see United States v. Mead Corp., 533 U. S. 218, 234 (2001), and there is no need to resolve deference issues when there is no need for deference.
  The general practice of EEOC staff members is to prepare a formal charge of discrimination for the complainant to review and to verify, once the allegations have been clarified. See Brief for United States et al. as Amici Curiae 24. The complainant must submit a verified charge before the agency will require a response from the employer. See Brief for United States et al. as Amici Curiae on Pet. for Cert. 16.
  Respondent argues that the employer will be prejudiced by these procedures because “there would be no deadline for verifying a charge.” Brief for Respondent 34, n. 26. But this is not our case, which simply challenges relation back per se, and our understanding is that the EEOC’s standard practice is to caution complainants that if they fail to follow up on their initial unverified charge, the EEOC will not proceed further with the complaint. See App. 57; Brief for United States et al. as Amici Curiae on Pet. for Cert. 17.
  We also note that Rule 15(c) of the Federal Rules of Civil Procedure permits the relation back of amendments to pleadings under specified circumstances.
  See, e. g., Rule C(6) of the Supplemental Rules for Certain Admiralty and Maritime Claims (“[A] person who asserts an interest in or right against the property that is the subject of the [civil forfeiture] action must file a verified statement identifying the interest or right”).
  See, e.g., United States v. United States Currency in Amount of $103,387.27, 863 F. 2d 555,561-563 (CA7 1988); Johnston Broadcasting Co. v. FCC, 175 F. 2d 351, 355-356 (CADC 1949); see also 5A C. Wright & A. Miller, Federal Practice and Procedure §1339, p. 150 (2d ed. 1990) (“Even if a federal rule or statute requires verification, a failure to comply does not render the document fatally defective”). In Armstrong v. Fernandez, 208 U. S. 324, 330 (1908), we approved a bankruptcy court’s allowance of nunc pro tunc verification of a petition filed under the Bankruptcy Act of 1898.
  State-court practice before and after Congress enacted the Civil Rights Act of 1964 has been, for the greater part, the same as federal. See, e. g., United Farm Workers of Am. v. Agricultural Labor Relations Bd., 37 Cal. 3d 912, 915, 694 P. 2d 138, 140 (1985) (en banc); Easter Seal Soc. for Disabled Children v. Berry, 627 A. 2d 482, 489 (D. C. 1993); Maliszewski v. Human Rights Comm’n, 269 Ill. App. 3d 472,474-477, 646 N. E. 2d 625, 626-628 (1995); Workman v. Workman, 46 N. E. 2d 718, 724 (Ind. App. 1943) (en banc); Pulliam v. Pulliam, 163 Kan. 497, 499-500, 183 P. 2d 220, 222-223 (1947); Southside Civic Assn. v. Warrington, 93-0890, pp. 3-4 (La. App. 4/1/94), 635 So. 2d 721, 723-724, pet. for writ denied, 94-1219 (La. 7/1/94), 639 So. 2d 1168; Drury Displays, Inc. v. Board of Adjustment, 760 S. W. 2d 112, 114 (Mo. 1998); Chisholm v. Vocational School for Girls, 103 Mont. 503, 506-509, 64 P. 2d 838, 841-842 (1936); In re Estate of Sessions, 217 Ore. 340, 347-349, 341 P. 2d 512, 516-517 (1959); State ex rel. Williams v. Jones, 164 S. W. 2d 823, 826 (Tenn. 1942); Greene v. Union Pac. Stages, Inc., 182 Wash. 143, 145, 45 P. 2d 611, 612 (1935). But see, e. g., Dinwiddie v. Board of County Comm’rs, 103 N. M. 442, 445, 708 P. 2d 1043, 1046 (1985), cert. denied, 476 U. S. 1117 (1986) (denying leave to amend and dismissing unverified complaint contesting election).
  See North Star Steel Co. v. Thomas, 515 U.S. 29, 34 (1995) (‘“[I]t is not only appropriate but also realistic to presume that Congress was thoroughly familiar with [our] precedents ... and that it expect[s] its enactment[s] to be interpreted in conformity with them’” (citation omitted)).
  See, e. g., Pub. L. 102-166,105 Stat. 1075; Pub. L. 92-261,86 Stat. 104.
  Respondent argues that the regulation became inconsistent with Title VII when Congress passed the 1972 amendments to the legislation. Brief for Respondent 20-25, 37. In 1972, during the floor debate over the Senate version (S. 2515) of the Equal Employment Opportunity Act of 1972, Senator Allen noted that the committee amendments omitted the requirement that a charge be made under oath, and proposed an amendment to define a charge to “‘mean an accusation of discrimination supported by oath or affirmation.’ ” 118 Cong. Rec. 4815 (1972). The Senator expressed his view that the amendment preserved what he believed to be an existing requirement under the 1964 Act that “charges are to be filed and made under oath in writing.” Ibid. This understanding was neither confirmed nor denied, but Senator Williams, the bill’s floor manager, suggested that rather than the “one coverall, blanket” definition proposed by Senator Allen, the oath requirement could be included at the beginning of § 706(b). Ibid. So modified, the amendment was adopted by voice vote and enacted into law.
  Besides refining the language of §706 of Title VII, the 1972 amendments extended the basic time period for filing a charge with the EEOC from 90 to 180 days, and from 210 to 300 days in deferral States. Pub. L. 92-261, 86 Stat. 104. Congress also added a requirement that the EEOC notify employers within 10 days of receiving a filed charge. Ibid. In view of the above-described exchange over the phrasing of the verification requirement, and because Congress enacted this requirement while at the same time amending the charge-filing deadline in § 706(e), respondent advocates our reading the 1972 amendments as a “congressional compromise.” Brief for Respondent 24. We are asked, in other words, to conclude that Congress lengthened the time for filing charges only because Congress, at the same time, required that a charge necessarily be verified when first filed. The evidence for such a quid pro quo is, however, equivocal.
  See, e. g., Blue Bell Boots, Inc. v. EEOC, 418 F. 2d 355, 357 (CA6 1969); Georgia Power Co. v. EEOC, 412 F. 2d 462, 466-467 (CA5 1969); Weeks v. Southern Bell Tel. & Tel. Co., 408 F. 2d 228, 230-231 (CA5 1969); Choate v. Caterpillar Tractor Co., 402 F. 2d 357, 359-360 (CA7 1968).