A woman has alleged her former boss hired the Black Power gang to intimidate her into not giving evidence in an employment dispute.

A former clothing store worker has claimed a Black Power member threatened her family on the orders of her boss.

At an Employment Relations Authority hearing in Auckland on Friday, Kalpana Nandni said the man knocked on the door of their home late at night, brandishing pictures of her family including her young son.

He had white skin and multiple tattoos, including the words "Black Power" across his face, she said.

He told her and her husband Nitesh Prasad that they should not attend an upcoming employment case and proceed with their complaint about wages owed.

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"He did mention, 'look, you people are really in danger, some people are after you and if you do go to attend the case something bad could happen to you and it's better if you don't attend'."

The man then walked down the driveway and returned with two pictures of the family, which he said he had been given by the people who had hired the gang.

Despite the threat Nandni said the man was reasonably friendly and appeared to soften at one point when her young son walked into view.

"He said, 'I've got a family too and I've gone through that process when people are hassling us so I know what it feels like"."

The man told her to call her former employer and inform them that the gang had visited and done its job, describing the person who had hired them.

Nandni worked for three years at a clothing store owned by Neelam Ahuja, Chirag Ahuja and Rhythm Ahuja.

In a previous authority decision, Nandni and three other staff were awarded $68,782 after a ruling that the Ahujas had not paid the minimum wage. The decision is being appealed.

The three chose not to give evidence at the hearing on Friday, which was to determine if there had been an attempt to obstruct proceedings, but deny they organised for the gang to visit.

Nandni said that after the alleged visit the family contacted a labour inspector who was handling their case, who told them to call police immediately.

The labour inspector also offered emergency accommodation for Nandni's family and another former employee who also claimed she had been threatened by the gang over the phone.

The pair gave statements to police, but no charges were laid and the case has been closed.

During the hearing defence lawyer Greg Bennett scrutinised the pair's claims and asked Nandni if she was making the story up.

"Why would I make something up? What do I gain making something like this up?"

Authority member Eleanor Robinson reserved her decision.

A police spokeswoman confirmed a number of leads in relation to the complaints but that the case was closed due to a lack of evidence.

A very limited description of the man had been provided and no other details, such as a description of his car or the registration number, had been provided, she said.