Reviewing Clarke's Sex Discrimination Formalism

Leah Litman, Toggle Boggle, JOTWELL, reviewing Jessica A. Clarke, Sex Discrimination Formalism, __ Va. L. Rev. __ (forthcoming 2023), available on SSRN (Aug. 13, 2023).

What is sex discrimination? Or, more generally, what is discrimination?

This question has often centered around a few recurring divisions in constitutional and antidiscrimination law. One division is between intentional discrimination and disparate impact theories of liability; another break is between formal equality and substantive equality; another, related divide is between anti-classification theories of equality and anti-subordination theories.

In her timely new article, Sex Discrimination Formalism, Professor Jessica Clarke smartly unpacks the category of “formal equality” and shows that, at different points, it encompasses a family of different theories that sometimes travel together, but not always. Clarke argues that courts applying “formal” approaches to equality are sometimes using “but for” causation, asking whether some protected trait or characteristic is the but-for cause of differential treatment. But courts adopting a “formal” approach to equality sometimes use “anti-classification” theories of equality, asking if a protected trait or characteristic has been used to categorize or sort individuals. Finally, courts might use a “similarly situated” test that examines whether someone has been treated differently than someone who is “similarly situated” to them (but who does not have a particular trait or characteristic).

Clarke points out that Bostock v. Clayton County blended all of these different approaches as it engaged in a formal approach to Title VII. (In Bostock, the Court held that Title VII’s prohibition on discrimination because of sex entailed discrimination on the basis of sexual orientation and gender identity.) That is, Bostock could plausibly maintain that all of the three theories pointed toward the same conclusion. But there are times when the different approaches might yield different results. For pregnancy discrimination, some courts have concluded that sex is a but-for cause of the discrimination. But courts applying a “similarly situated” or “anti-classification” test have rejected arguments that pregnancy discrimination is a kind of sex discrimination.

These differences are not just academic. They help clarify some of what is happening in recent decisions