Several undocumented workers spoke on the condition of anonymity.
One man from Malaysia said he was told he could earn more than $300 a day picking fruit in Australia.
But when he arrived five years ago, he was only earning around $30 a day doing back-breaking work.

"The first week, I wanted to cry," he said.

At one farm, he paid $40 a week to live in a shipping container with eight others.
A young woman brought hand-written payslips from a labour hire contractor showing she was paid just $28.50 for a day's work plucking leaves from grapevines.
The workers have no access to Medicare or health insurance, and most are afraid to go to the hospital if they're unwell or injured.

A woman who lives in the Sunraysia region, Esita, said some of her friends had lived in Australia without valid visas for more than 20 years, during which time many had married and had children.
She said undocumented workers were routinely bullied and verbally abused, while many women were sexually harassed and inappropriately touched while climbing ladders to pick fruit.

"They can't answer back because they're so scared," she said.
"I have so many friends that have been trapped in this situation and they really need help."