The member of the authority Helen Doyle found that the employees should be paid the sum of the minimum wage and holiday pay arrears calculated by the Inspector of $309.60 and $584.59 and interest.
The ERA also issued Verney Construction with a penalty of $2,000 for breaching orders of compliance.
Labour Inspectorate Southern Regional Manager Stuart Lumsden says employment records are required to be kept by law and failure to comply with a labour inspector's request for them is a breach of the Employment Relations Act 2000.
"This is a disappointing trend that we are starting to see nationally - employers treating employees as contractors to avoid keeping records, making payments to IRD and paying the minimum wage and holiday entitlements," Mr Lumsden said.
"The Labour Inspectorate takes any breaches of minimum employment rights seriously. We are pleased the Authority has issued a penalty, sending a clear message to employers that failure to comply with the minimum labour standards will result in enforcement action."
The ministry encourages anyone in this situation, or who knows of anyone in this situation, to call its contact centre on 0800 20 90 20 where their concerns will be handled in a safe environment.