Immigration New Zealand is turning away migrants who have visas tied to employers under investigation.
Ten people have been stopped at the border in the last two weeks, while almost 193 others have been told not to leave home.
It comes as the government investigates more than 170 complaints against accredited employers.
Mandeep Singh Bela is the president of Union Network of Migrants NZ.
He spoke to Ingrid Hipkiss.
