Fortescue Metals Group has been sued by female workers who allege there is widespread sexual harassment and assault at the company’s remote sites.

When women start working at Fortescue, the “first thing” they are allegedly told by other women is “don’t leave your washing out because your underwear will be stolen”.

Andrew "Twiggy" Forrest's mining giant Fortescue has been slapped with a landmark class action alleging systemic sexual harassment, discrimination and toxic work sites.