OPINION
I. INTRODUCTION
Plaintiffs/Appellants Dana Derungs, Jennifer Gore and Angie Baird appeal the district court’s grant of summary judgment in favor of Defendant/Appellee Wal-Mart Stores, Inc. (“Wal-Mart”), on their claim that Wal-Mart discriminated against them on the basis of their sex in violation of the Ohio Public Accommodation statute, Ohio Revised Code § 4112.02(G), by requiring them to breast-feed their children in a restroom or to leave the store to do so. Because we find that under the specific provisions and legislative history of the Ohio Public Accommodation statute, restrictions on breast-feeding do not amount to discrimination based on sex, we affirm the district court’s judgment.
II. PERTINENT FACTS
On April 7,1997, Plaintiff Dana Derungs was shopping at the Wal-Mart store located in Lebanon, Ohio. She attempted to nurse her son, Devin Derungs, on a bench next to a dressing room. She was prohibited from doing so by a Wal-Mart employee and told that she had the option of breast-feeding her son either in the restroom or outside the store. In response, Ms. Derungs left the store with her son.
Plaintiff Jennifer Gore had a similar experience in another Wal-Mart store. On November 8, 1997, Ms. Gore was waiting in a lay-a-way line at a Wal-Mart store in Trotwood, Ohio with her son, Austin Gore. She started to breast-feed Austin but was interrupted by a Wal-Mart employee who told her she was not permitted to breastfeed her son in the store. The employee informed Ms. Gore that she could breastfeed her son in the restroom, or she could leave the store. She voluntarily left the store with her son.
Plaintiff Angie Baird also attempted to breast-feed her child in the Trotwood, Ohio Wal-Mart store. On February 18, 1999, Ms. Baird attempted to breast-feed her daughter, Kassidee Baird, on a bench near the portrait studio in the Trotwood Wal-Mart store. Like her co-plaintiffs, Ms. Baird was interrupted by a store employee and informed that she could either breastfeed in the restroom or had to leave the store. She, too, elected to leave the store with her child.
On March 31, 1999, Dana Derungs, Devin Derungs, Jennifer Gore and Austin Gore filed a complaint in Ohio state court alleging that in refusing to permit Ms. Derungs and Ms. Gore to breast-feed their children, Wal-Mart discriminated against them on the basis of sex and age under Ohio Revised Code § 4112.02(G). Plaintiffs also alleged three common-law claims in their complaint: tortious infliction of emotional distress, tortious interference with parental rights, and loss of consortium. On April 19, 1999, the complaint was amended to add Angie Baird and her infant daughter, Kassidee Baird, as party-plaintiffs. Wal-Mart timely removed the action to the United States District Court for the Southern District of Ohio on May 3, 1999 on diversity of citizenship grounds.
*431
On September 26, 2000, the district court granted Wal-Mart’s Motion for Partial Summary Judgment and dismissed Plaintiffs’ statutory claims.
See Derungs v. Wal-Mart Stores, Inc.,
III. DISCUSSION
A. STANDARD OF REVIEW
The standard of review applicable to the district court’s decision to grant Defendant’s Motion for Summary Judgment is
de novo. Darrah v. City of Oak Park,
B. THE DISTRICT COURT’S RULING
The district court determined that the thrust of the Ohio Public Accommodation statute is the comparability of treatment. Finding no federal or Ohio state court decisions addressing the issue of whether a prohibition against breast-feeding in a place of public accommodation constitutes sex discrimination under Ohio Revised Code § 4112.02(G), the court looked to federal cases involving the issue of breast-feeding which addressed this issue in the context of the sex discrimination prohibition in Title VII. The court discerned from these cases that
Title VII forbids gender discrimination in employment, but gender discrimination by definition consists of favoring men while disadvantaging women or vice versa. The drawing of distinctions among persons of one gender on the basis of criteria that are immaterial to the other, while in given cases perhaps deplorable, is not the sort of behavior covered by Title VII.
The lower court also determined that even if analyzed as a “sex-plus” case, Plaintiffs failed to make out a prima facie claim of sex discrimination. Id. The court *432 explained the Title VII approach to “sex-plus” claims:
“[S]ex-plus” discrimination ... exists when a person is subjected to disparate treatment based not only on her sex, but on her sex considered in conjunction with a second characteristic....
... [I]n a “sex-plus” or “gender-plus” case, the protected class need not include all women [but] the plaintiff must still prove that the subclass of women was unfavorably treated as compared to the corresponding subclass of men. Absent such a subclass, a plaintiff cannot establish sex discrimination.
After reviewing the language of Section 4112.02(G) and the pertinent federal precedents, and finding no principled basis for distinguishing Ohio’s prohibition on the basis of sex by places of public accommodation from the Title VII analysis set forth above, the court concluded:
[D]rawing distinctions among women ... on the basis of their participation in breast-feeding activity, simply is not the same as drawing distinctions between men and women.... A prohibition against breast-feeding merely divides people into two groups: (1) women who breast-feed ...; and (2) individuals who do not breast-feed.... As noted above, although the first group includes exclusively women ... the second group includes members of both sexes.... If anything, such classifications establish “breast-feeding discrimination,” which ... is not discrimination on the basis of sex under the law.
Id. at 893.
Plaintiffs argue that the district court erred in applying a Title VII analysis and argue here, as they did before the lower court, that the Public Accommodation statute is broader than those provisions of the Ohio Civil Rights law prohibiting employment discrimination, which they concede, are analogous to Title VII. They claim that Section 4112.02(G) does not require a showing that Wal-Mart discriminates against all women. It is enough, they argue, to show that Wal-Mart denies some women (i.e., women who wish to engage in breast-feeding) the full use and enjoyment of its facilities.
C. OHIO’S TEST FOR SEX DISCRIMINATION UNDER § 4112.02(G)
As an initial matter, we note, as did the district court, that this case presents an issue of first impression, i.e., does a prohibition against breast-feeding in a place of public accommodation constitute unlawful discrimination under Ohio law. Plaintiffs here argue that the prohibition against sex discrimination in the Ohio Public Accommodation statute, Ohio Rev.Code § 4112.02(G), should be construed so as to render breast-feeding by a woman a protected activity under the statute.
§ 4112.02(G) of the Ohio Revised Code prohibits discrimination in places of public accommodation:
It shall be an unlawful discriminatory practice:
For any proprietor or any employee, keeper, or manager of a place of public accommodation to deny to any person, except for reasons applicable alike to all persons regardless of race, color, religion, sex, national origin, disability, age or ancestry, the full enjoyment of the accommodations, advantages, facilities, or privileges of the place of public accommodation.
Ohio Rev.Code § 4112.02(G).
“Place of public accommodation” is defined in § 4112.01(9) as
any inn, restaurant, eating house, barbershop, public conveyance by air, land, *433 or water, theater, store, other place for the sale of merchandise, or any other place of public accommodation or amusement of which the accommodations, advantages, facilities, or privileges are available to the public.
Ohio Rev.Code § 4112.01(9) (emphasis added).
When a federal court interprets state law, the substantive law of the state in which the district court sits must be applied.
Erie R.R. v. Tompkins,
Both the Ohio State Legislature and the Ohio Supreme Court have stated that the Ohio civil rights statutes should be liberally construed. Ohio Rev.Code § 4112.08;
Ohio Civil Rights Commission v. Lysyj,
When determining whether there has been unlawful discrimination under R.C. 4112.02(G), the test is simply whether the proprietor, keeper, manager, or employee of a place of public accommodation has denied to any person the full enjoyment of such place for reasons not applicable alike to all persons irrespective of race, color, religion, national origin or ancestry. 2
Id.
at 221,
Lower Ohio courts have also weighed in on the meaning of Ohio’s Public Accommodation statute. The first such case,
Gegner v. Graham,
We believe “full enjoyment” of the accommodations, facilities, advantages, or privileges of a place of public accommodation means the right to purchase all services or products of a place of public accommodation, the right to be admitted to any place of public accommodation, and the right to have access to the services and products of such a place in the same manner as all other customers.
Meyers,
D. TITLE VII AND THE OHIO PUBLIC ACCOMMODATION STATUTE
The Ohio Supreme Court has adopted the federal courts’ Title VII
4
analysis when deciding employment discrimination claims under the Ohio Civil Rights statute.
See Plumbers & Steamfitters Joint Apprenticeship Comm. v. Ohio Civil Rights Comm’n,
Our task is complicated by the fact that the Ohio legislature used different language in constructing Section 4112.02(G) than it used in constructing the other parts of Section 4112.02. That is, the other parts of the Section are phrased in the language of Title VII in that they prohibit discrimination “on the basis of....” Section 4112.02(G), on the other hand, prohibits any place of public accommodation from denying to any person the full enjoyment of the accommodations, advantages, facilities, or privileges of the place of public accommodation, “except for reasons applicable alike to all persons regardless of race, color, religion, sex, national origin, disability, age or ancestry.” Ohio Rev. Code § 4112.02(G). Ohio courts have not considered whether federal courts’ Title VII analysis is equally applicable to Section 4112.02(G). Nevertheless, a close analysis of the statute and its history reveals the likely legislative intent with respect to this aspect of the statute.
1. The Supreme Court’s Gilbert Decision, the Federal Pregnancy Discrimination Act, and the 1980 Amendments to the Ohio Civil Rights Statute
In dismissing the Plaintiffs’ claims in this case, the district court relied on the Supreme Court’s decision in the employment discrimination case of
General Electric Co. v. Gilbert,
In
Gilbert,
the Court held that discrimination based on pregnancy was not discrimination within the meaning of Title
*435
VIL The specific issue in
Gilbert
was whether Title VII prohibits excluding pregnancy-related disabilities from an employer’s disability benefit plan. Upon review, the Supreme Court concluded that such an exclusion did not constitute unlawful discrimination on the basis of sex. In reaching this conclusion, the
Gilbert
Court stated that “we have here no question of excluding a disease or disability comparable in all other respects to covered diseases or disabilities and yet confined to the members of one race or sex.”
Gilbert,
The Plan, in effect (and for all that appears), is nothing more than an insurance package, which covers some risks but excludes others.... The “package” going to relevant identifiable groups we are presently concerned with — General Electric’s male and female employees— covers exactly the same categories of risk, and is facially nondiscriminatory in the sense that there is no risk from which men are protected and women are not. Likewise, there is no risk from which women are protected and men are not. As there is no proof that the package is in fact worth more to men than to women, it is impossible to find any gender-based discriminatory effect in this scheme simply because women disabled as a result of pregnancy do not receive benefits....
Id.
at 138,
Plaintiffs here claim that the district court’s reliance on the rationale of this case was specifically erroneous because Gilbert has been overruled by statute and subsequent Supreme Court decisions. While the Plaintiffs are correct that the Court’s holding in Gilbert has been overruled, they are mistaken that the comparability analysis used by the Supreme Court has been completely obliterated in all factual contexts.
In 1978, in response to the Supreme Court’s decision in Gilbert, Congress passed the Pregnancy Discrimination Act (the “PDA”), 42 U.S.C. § 2000e(k), which effectively overruled the holding in Gilbert. The PDA provides that, for purposes of employment discrimination under Title VII, the phrases “because of sex” and “on the basis of sex” specifically include pregnancy, childbirth, and related medical conditions. 5
The first Supreme Court case that subsequently interpreted the PDA was
Newport News Shipbuilding & Dry Dock Co. v. EEOC,
The timing of this sequence of development of law concerning the inclusion of pregnancy discrimination within the scope of federal employment discrimination law is important in determining the Ohio Legislature’s intent regarding Section 4112.02(G). Ohio adopted § 4112.02 prior to the passage of the Civil Rights Act of 1964. After the Supreme Court’s 1976 decision in Gilbert and Congressional passage of the PDA in 1978, the Ohio legislature adopted § 4112.01(B) in 1980. This amendment to the definitions section of Chapter 4112 redefined the terms “because of sex” and “on the basis of sex” to incorporate the language of the PDA, yet in doing so made the new definition applicable only to § 4112.02(A) — (F), and thus not to the public accommodation section, § 4112.02(G). 6 However, when the Ohio Legislature amended the “because of sex” and “on the basis of sex” definition, Gilbert had not been expressly overruled by the Supreme Court. Newport News came three years later. But after Newport News, the Legislature again declined the opportunity to extend the amended “because of sex” and “on the basis of sex” definition to places of public accommodation. 7
Having incorporated the PDA’s language almost verbatim into the definitional provisions of § 4112, it is clear to us that the Ohio Legislature was aware of the meaning and rationale of Gilbert, as well as being aware of the PDA. The Legislature made a conscious choice to extend the definition of discrimination to include pregnancy even though there cannot be a class of similarly situated males. In making this choice, however, the Legislature extended the definition of discrimination in the employment context only. Because of the timing and language of § 4112.01(B), it appears that the Ohio Legislature purposely chose to limit the scope of protec *437 tion of “pregnancy, childbirth and related medical conditions” to the employment context and not to extend that protection to places of public accommodation. It would be particularly inappropriate for this federal court to legislate additional protection in an area where the state legislature has chosen not to extend protection. Therefore, to the extent that breast-feeding may be deemed to be a pregnancy-related activity, there is no protection for such an activity under Ohio Revised Code § 4112.02(G).
E. THE DISTRICT COURT DID NOT ERR IN USING A TITLE VII COMPARABILITY ANALYSIS IN RULING ON DEFENDANT’S MOTION FOR SUMMARY JUDGMENT
1. Ohio Courts Apply a Comparability Analysis in Deciding Cases Brought Under Ohio Revised Code § 1112.02(G).
The district court used a traditional Title VII disparate treatment comparability analysis in deciding that Plaintiffs had not made out any legally cognizable claim of sex discrimination. Plaintiffs claim that this was erroneous and argue here, as they did in the lower court, that the disparate treatment analysis should play no role in deciding claims under Ohio Revised Code § 4112.02(G). They argue that the statute is unique and that because it precludes discrimination “except for reasons alike to all persons” the statute is intended to be more expansive than its employment discrimination and like counterparts in subsections (A)-(F) of the Civil Rights Act, and, therefore, no comparability analysis is required. We cannot credit this argument.
First, contrary to the Plaintiffs’ reading, the statutory language plainly requires a comparable class of people for comparison to demonstrate discrimination. For a prohibition to be permissible if it is “applicable alike to all persons,” there is a linguistic necessity for a comparison. Therefore, for there to be impermissible sex discrimination, there must be one gender that is treated differently than another. Feeding infants is not something that only one parent may accomplish, and even the feeding of breast milk may be done by either parent from a bottle. Because the only restriction Wal-Mart placed on their business invitees was a prohibition on the place and manner of feeding that has no comparable class for comparison, Wal-Mart’s prohibition does not violate the plain language of § 4112.02(G).
The second reason that the Plaintiffs expansive reading fails is that in the few Ohio cases that have dealt with this statutory language, the courts have consistently relied on a comparison analysis to demonstrate or deny discrimination. For example, in the leading case of
Ohio Civil Rights Commission v. Lysyj, supra,
2. Other “Breast-feeding Discrimination” Cases Apply a Comparability Analysis
The necessity of a comparability analysis has been universally accepted in other breast-feeding cases in the employment context. In the leading case within the Sixth Circuit,
Wallace v. Pyro Mining Co.,
We see no significant difference between the situation in Gilbert and the case here. Pyro’s decision does not deny anyone personal leave on the basis of sex — it merely removes one situation, breast-feeding, from those for which personal leave will be granted. While breast-feeding, like pregnancy, is a uniquely female attribute, excluding breast-feeding from those circumstances for which Pyro will grant personal leave is not impermissible gender discrimination, under the principles set forth in Gilbert.
We specifically used a comparability analysis in our unpublished decision affirming the district court’s judgment in
Wallace
(“[BJecause Wallace fails to cite evidence showing that [her employer] treated women less favorably than men with respect to requests for leaves of absence, she does not meet her burden.”
Furthermore, when breast-feeding has come up in employment contexts outside of the Sixth Circuit, it has also been deemed outside the bounds of sex discrimination. In
Martinez v. N.B.C., Inc.,
All of the above-cited cases arose pursuant to Title VII and the expansive “because of sex” and “on the basis of sex” definition PDA, which, as shown, has not been incorporated into Section 4112.02(G). Yet it is worth noting that, despite the application of the expansive PDA language, none of the district or appellate courts found that breast-feeding fell within the scope of gender discrimination because of the absence of a comparable class. Indeed, both Wallace and Martinez directly cite to Gilbert as controlling authority for their decisions even though they deal with employment cases after the passage of the PDA.
It is clear from the foregoing, that no judicial body thus far has been willing to take the expansive interpretive leap to include rules concerning breast-feeding within the scope of sex discrimination.
Finally, it is instructive to observe that in other cases involving discretionary leaves of absence for breast-feeding purposes, courts have uniformly held that rules relating to regulation of breast-feeding do not violate the PDA or Title VII. For example, in
Barrash v. Bowen,
The significance of these decisions lies in the fact that the PDA is meant to be more expansive in scope than the language in Ohio Revised Code § 4112.02(G), as explained above. Nevertheless, breast-feeding was still consistently found to be outside its broad coverage. If breast-feeding is not covered by the PDA, which specifically overturned Gilbert and widened the protective umbrella of Title VII, we find it extremely unlikely that in the context of public accommodation, which appears to still be governed by Gilbert under Ohio law, an Ohio court would find regulation of breast-feeding to be prohibited as sex discrimination.
*440 IV. CONCLUSION
For all of the foregoing reasons, we conclude that the district court did not err in determining that Wal-Mart’s prohibition against breast-feeding in a place of public accommodation did not violate Ohio Revised Code § 4112.02(G). Accordingly, the district court’s grant of summary judgment in favor of Defendant is AFFIRMED.
Notes
. Plaintiffs did not brief their claims of tor-tious infliction of emotional distress, tortious interference with parental rights, or loss of consortium. Therefore, these claims are considered waived.
See
Fed. R.App. P. 28(a)(3) and (b);
see also Ahlers v. Schebil,
. § 4112.02(G) was later amended to include sex and age. It is undisputed that the test announced in Lysyj is still applicable after this amendment.
. One other unpublished appellate case,
Love v. Ohio Civil Rights Comm'n,
. Title VII of the Civil Rights Act of 1964, as amended, 42 U.S.C. § 2000e.
. 42 U.S.C. § 2000e(k) provides, in pertinent part, as follows:
For purposes of this subchapter [i.e., Sub-chapter VI of Title VII, "Equal Employment Opportunities"]—
The terms "because of sex” or "on the basis of sex” include, but are not limited to, because of or on the basis of pregnancy, childbirth or related medical conditions; and women affected by pregnancy, childbirth or related medical conditions shall be treated the same for all employment-related purposes, including receipt of benefits under fringe benefit programs, as other persons not so affected but similar in their ability or inability to work, and nothing in section 20002-2(h) of this title shall be interpreted to permit otherwise....
. § 4112.01(B) provides, in pertinent part:
For the purposes of divisions (A) to (F) of Section 4112.02 of the Revised Code, the terms “because of sex” or "on the basis of sex” include, but are not limited to, because of or on the basis of pregnancy, any illness arising out of and occurring during the course of a pregnancy, childbirth, or related medical conditions. Women affected by pregnancy, childbirth, or related medical conditions shall be treated the same for all employment-related purposes....
. It is not as if the Ohio Legislature has ignored the Civil Rights statute. The Ohio Legislature, in fact, has thrice amended the Civil Rights statute since adding the PDA language to the definitional section of the statute. See 1990 H 314 (amending provisions of the civil rights statute's provisions regarding age discrimination); see also 1999 H 264, eff. 3-17-00 (changing the statutory term "handicap” to "disability”); 1992 H 321, eff. 6-30-92 (adding provisions prohibiting discrimination in housing accommodations on the basis of familial status, and provisions prohibiting additional forms of housing discrimination against handicapped persons).
. "Sex-plus” discrimination exists when a person is subjected to disparate treatment based not only on her sex, but on her sex considered in conjunction with a second characteristic.
See e.g., Phillips v. Martin Marietta Corp.,
.
McDonnell Douglas Corp. v. Green,
