Philippa Tolley investigates the scale of migrant labour exploitation in New Zealand amid calls for tougher penalties for employers.
Two of the most serious cases of alleged exploitation of immigrants in recent times are making their way through the courts at present.
But advocates say more needs to be done to protect those who suffer unfair treatment in this country.
They say the victims are the ones who lose all in revealing wrong doing.
Philippa Tolley has been looking into the current situation.
Image: Indonesian fishing crew .From left Entis Sutisna, Anto Fantanto, Supri Yanto
Coming Up on Insight
8:12 am Sunday 29 November: Insight: Obesity Crisis
The obesity crisis is costing the country $1bn a year and threatens to cripple the health system.
Next year, it's predicted to overtake smoking as the country's biggest health issue. One in three adults and one in ten children are obese.
The figure for Maori and Pacific people is much higher.
Sharon Brettkelly explores suggested solutons