A cafe at Crown Casino has been fined more than a quarter of a million dollars for underpaying 54 workers.

The Federal Circuit Court penalised Ital One Holdings Pty Ltd $217,000 and its director, Len Di Pietro, $40,000 for underpayments at Cafe Baci at Southbank in 2015 and 2016.

The underpaid staff worked as waiters, kitchen hands, chefs and in other roles. Credit:Rob Homer

Judge Heather Riley said the company's conduct was "particularly egregious" given the court had previously found it broke workplace laws on three similar occasions.

"The respondents have shown no remorse but sought to minimise their behaviour with complaints of being busy," she said.