Jaroslawa Zelinsky Johnson, a former managing partner of Chadbourne & Parke’s defunct Kiev office, filed papers Thursday with a federal court in New York seeking to join a putative class action against her former firm filed in late August by current litigation partner Kerrie Campbell.

Campbell’s $100 million bias suit said it was filed on behalf of 26 current and former female partners at Chadbourne. Johnson is the first woman to publicly identify herself as one of the plaintiffs seeking to join Campbell, who alleges that the firm routinely paid female partners less than their male counterparts and excluded them from positions of authority. Chadbourne has vigorously denied Campbell’s claims.