Postmates Inc. and its Gibson, Dunn & Crutcher counsel have sued more than 10,000 of the delivery company’s couriers who are represented by Chicago plaintiffs firm Keller Lenkner claiming they’re filing arbitration demands en masse to “extract a ransom-style settlement.”

In the complaint, filed Wednesday in the U.S. District Court for the Central District of California, Postmates said it does not intend to seek damages or evade the costs of arbitration fees.