The six former associates who have accused Jones Day of systematically discriminating against women at the firm asked a federal judge Wednesday to conditionally certify the case as a collective action under the Equal Pay Act.

If granted, the certification would allow the plaintiffs to alert all female associates who have worked at Jones Day since April 3, 2016—three years before they initiated the $200 million lawsuit—of their right to opt in.

The six named plaintiffs—Nilab Rahyar Tolton, Andrea Mazingo, Meredith Williams, and  Jaclyn Stahl, who all worked for the firm in California, along with former Atlanta associate Saira Draper and former New York associate Katrina Henderson—have alleged that the black box compensation structure employed by the firm helps enable discriminatory pay.