Sissy Spacek and Woody Harrelson will join Charlize Theron, Frances McDormand, and Sean Bean in an untitled drama to be directed by Niki Caro ("Whale Rider"), Variety reports. The movie stars Theron as a single mother who rallies her fellow female co-workers to stand up against the sex discrimination they face at their mining company. Spacek will play Theron’s mom, and Harrelson, her lawyer. Production is set to begin mid-February.