Three men facing a total of 54 charges of people-trafficking have appeared in the Nelson District Court.
The charges relate to 18 people, believed to be horticultural workers in the Nelson area.
Jaswinder Singh Sangha, 53, and Satnam Singh, 52, have denied all charges.
The elected a trial by jury and will appear again on November 5.
A third man, from Auckland, has name suppression. He faces 36 charges.