Unite union supports the Labour Inspectorate’s enforcement action that has seen Burger King (Antares Restaurants) banned from getting new visas for migrant workers for a year.

https://www.employment.govt.nz/resolving-problems/steps-to-resolve/labour-inspectorate/employers-who-have-breached-minimum-employment-standards/ 

The reason for then ban is for paying a salaried manager (and Unite union member) less than the minimum wage: 

https://www.nzherald.co.nz/business/news/article.cfm?c_id=3&objectid=12097042

“This is a large high profile corporation and shows that this is not just a problem for small restaurants and fruit pickers - it goes right across most sectors and company sizes” said National Secretary Gerard Hehir.

(Burger King has 83 Restaurants and employees over 2,600 staff. It first opened in New Zealand in 1993 and is currently owned by one of the largest private equity firms in the world - New York based Blackstone Group. Group CEO Steve Schwarzman was paid US$786 million in 2017). 

"Migrant workers are the most vulnerable to exploitation because their visa conditions often tie them to one employer. They fear speaking out because if they lose their job, they lose their ability to work in New Zealand. Employers who steal from their employees need to be sent a very clear message. Banning them from employing vulnerable migrant workers is a good start. If an employer is not able to guarantee the most basic minimum conditions allowed by law, they should not be able to hire vulnerable workers."