One witness said when customers left Halliday lost focus and would "stare into space".
Halliday says he was was disadvantaged in his employment because he continued to be rostered on to make sandwiches after he was verbally abused.
He argued the breaches resulted in stress and two periods of sick leave and that Lane Group commenced a course of action that he says was designed to cause him to resign.
The sandwich trainer at the store acknowledged saying "F*** this I'm going home" after becoming fed-up with training Halliday, but denies swearing directly at him.
She said Halliday would not take instruction and would not make the sandwiches the way she asked him to.
When told to follow instructions Halliday would sulk.
Sometimes, she said, he would sit on the floor, which she found quite unusual and sometimes he would cry.
Halliday did not disagree that there were occasions he sat on the floor.
Lane Group argued it was unaware that working in the food room was causing Halliday distress until about June 2016, by which stage he had ceased working in the sandwich room.
The ERA ruled Lane Group did not follow its policy over performance issues.
"Some of the reasons for dismissal had not been put to Halliday or put inadequately.
"A decision to dismiss as a result was not one accordingly that a fair and reasonable employer could have reached in all the circumstances."
However, the ERA was not satisfied that Halliday was targeted by his employer.
