A McDonald's employee who was caught up in armed robberies four times between 1993 and 1998 has won the right to sue the US burger behemoth for breaching its duty of care. McDonald's deny that it fails to provide adequate staff training or security but 22-year-old Elizabeth Ranieri is seeking up to A$750,000 damages for post-traumatic stress syndrome. She was threatened with knives and guns on four separate occasions during her time as a McDonald's employee and received just one session of counselling.