Only one of nine apple pack houses in the Tasman region was found to comply with the law in recent a Government audit.
Enforcement action has been taken against six for breaching employment laws and given improvement notices, while the other two were asked to produce their records because they didn't have them on-hand during the site visit.
The Ministry of Business, Innovation and Employment (MBIE), Immigration NZ and IRD visited the pack houses in March as part of a joint audit.
The breaches included using non-compliant employment agreements, failing to keep accurate employment records and not paying holiday pay correctly.
Labour Inspectorate regional manager Kevin Finnegan says the outcome of the audit is "disappointing", especially around employment agreements and time records.
"These are basic requirements all employers need to fulfil to ensure they are providing staff with their legal entitlements," he says.
Employers who breach employment law could be subject to enforcement action including up to $10,000 for individuals and $20,000 for companies.