The breaches also included failure to keep and maintain compliant wages, time, holiday and leave records as well as failure to provide an employment agreement.
"These were some of the most serious conceivable breaches, and that they were intentional," Ward said.
Two employees who used to work for the companies had relied on Singh's support with regards to their immigration status.
"The employers took advantage of their employees' vulnerable position as migrant workers," Ward said.
"They breached legal requirements which are in place to make sure all workers in New Zealand are treated fairly."
The companies also faced a 24-month stand-down period from being able to support any visa application.
ERA confirmed that the companies had settled the $90,000 that they had previously been asked to pay.
Anyone who has concerns about their employment situation or that of someone they know is asked to call 0800 209020.