Woolworths faces massive fines for worker ripoff as calls grow for criminal sanctions - I speak with Fair Work Ombudsman Sandra Parker

Fair Work Ombudsman Sandra Parker tells AM she is considering enforcement action against Woolworths after the retail giant admitted to underpaying 5,700 workers as much as $300 million over the past decade. 

Ms Parker says the government is currently taking submissions on potential criminal charges for worker ripoffs. 

Ms Parker tells ABC's Peter Ryan that lower union membership could be a factor but not specifically in the case of Woolworths.