Obviously there are laws about employment, but what if we are all self-employed? If we create an entity that is the co-op, and trade as the co-op, would we be breaking any discrimination laws if we are explicitly only accepting females as members? Presumably it is permissable to have all-female collectives of other sorts but does that change when it is a trading entity? I'm thinking of this kind of thing case.coop/2010/09/07/what-is-a-co-operative-consortium/