If you no longer meet the criteria for the subsidy (where you have estimated your turnover will be down by 30% but this has not occurred), and or no longer using the subsidy to retain and pay your employees then you will need to repay the unused portion of the wage subsidy. This would be a change in circumstance impacting on the eligibility for the subsidy and therefore need to repay.
If reducing your trade hours means the employees will not be working for the full 12 weeks period at the time of approving the declaration, then employers should make their best estimate of the period the wage subsidy is actually required for.
You can email COVID19subsidy_overpayment@msd.govt.nz to disclose any mistake or overpayment.
You will need to include the following information in your email:
New Zealand Business Number (NZBN), if you have one
And advise the amount overpaid and the reason