At the Auckland Food Show, 515 cases of wine were ordered, and again no records kept of how many were used or sold.
When asked for the cash takings for both shows, Ms Fredatovich provided $4,910.
But the company's estimate based on the stock left over indicated a shortfall of $7,865.
Ms Fredatovich was sent a letter inviting her to a formal meeting to discuss the shortfall. She indicated the cash might have been left in a locked cupboard, which was found to be empty.
Later that night she texted her boss to say she had found $3000 at her home, and the following day supplied $3950 for banking.
She disputed the company's estimate of the shortfall, and produced her own spreadsheet reconciling the stock used with the cash banked.
Treasury Wines said the delay in returning the cash was a serious neglect in her duties, the money banked did not cover the discrepancy as estimated by the company, and there had been damage to trust between the parties.
Ms Fredatovich took a case to the Employment Relations Authority, claiming she had been unjustifiably dismissed as the company had failed to carry out a proper investigation.
The authority found her actions were "gross negligence" and could have been considered as serious misconduct, and that Treasury Wines were justified in the dismissal.