An investigation into the owners of 17 Caltex petrol stations in Auckland found they came up more than $125,000 short in correctly paying their employees.
The breaches, found after a Labour Inspectorate investigation earlier this year, meant 232 employees were not correctly paid the minimum wage or holiday pay by owners Sanjai Bagia and Dipak Bagia.
After complying with the inspectorate's findings, the employees were back paid $125,659.
Labour Inspectorate regional manager Loua Ward says it was a "poor look" for any business, and for Caltex in this instance, not to pay employees what they were due.
"These kinds of cases can cast a cloud over a business long after the workers have been paid back, as ultimately it meant employees associated with your brand were left out of pocket," she said.
"It's always surprising and disappointing to find well-established and high profile organisations failing to ensure such basic compliance is occurring."
Forty-three per cent of consumers said that knowing a business treats its workers fairly affects their decision on whether to buy from it, Ms Ward said.