Frances McDormand and Charlize Theron can't get enough of each other. McDormand is in negotiations to join Theron in the Warner Bros. Pictures drama "Class Action." The Oscar winners are currently teamed up on "Aeon Flux" for MTV/Paramount Pictures. Written by Michael Seitzman, "Class Action" is a fictionalized account of the first successful sexual harassment prosecution in the United States, Jensen v. Eveleth Mines. "Whale Rider" helmer Niki Caro is on board to direct. Pending a deal, McDormand would play the role of Glory, a tough but tender iron miner who befriends and mentors Theron's character, Josie, a harassed mine worker who becomes the key plaintiff in the case. Industry Entertainment's Nick Wechsler is producing, with Nana Greenwald, Helen Bartlett and Doug Claybourne serving as executive producers. Courtenay Valenti is overseeing for the studio. McDormand's recent credits include "Catwoman," "City by the Sea" and "Something's Gotta Give." She is repped by Endeavor and Frank Frattaroli at Artists Independent Network.