Immigration New Zealand is looking into nearly 200 employers as it runs a ruler over its problem-plagued Accredited Employer Work Visa scheme.
Hundreds of workers have paid tens of thousands of dollars to come to New Zealand for jobs that don't exist when they land.
Immigration New Zealand has received more than 750 complaints against employers.
So far, seven have had their accreditation revoked and 11 have had theirs suspended. Another 63 are under assessment.
Last week, 115 migrants workers from Bangladesh and India were found living in overcrowded and unsanitary conditions without food in six houses across Auckland.
National's Immigration spokesperson Erica Stanford speaks to Susana Lei'ataua.
