[2] Shorn to their essentials, the critically important facts, emerging from the evidence accepted by the learned primary Judge, are these. The respondent injured her back early in the morning one day in August 1999. Delivering bread in her vehicle to the appellant's Stanthorpe store, in her capacity as an independent contractor, she found her access to the loading dock blocked by two large industrial bins which had some time earlier been emptied by the local authority. Each weighed more than 350 kilograms: they were approximately 1800mm long, 1350mm wide and 1250mm deep. The respondent is five feet one inch tall and weighed approximately eight stone. She had injured her back in a lifting manoeuvre only a week or two previously. On 22 May 1999, she noted in her diary, referring to such bins: "too heavy for manual moving ... too heavy for me to move by myself". She could have buzzed for assistance from an employee of the appellant. That may have involved a wait (on the Judge's findings, up to 10-15 minutes), but she was not subject to any urgent demand. She could also have waited for assistance from her husband, who would be passing by. But having moved one of the bins about 20 feet and then encountering resistance, she persisted and was consequently injured.