The Government will reinstate the Wage Subsidy Scheme (WSS) from this week.  Businesses can apply for the subsidy from this Friday 20th August (via the Work & Income website:
https://www.workandincome.govt.nz/covid-19/ ) if your business expects a 40% drop in revenue due to being in alert level 4. It will be paid as a two week lump sum. The first payments are usually available after three days.

WSS Rates have been increased to the following:
$600.00 gross per week per full-time equivalent employee and
$359.00 gross per week per part-time employee

The Resurgence Support Payment (RSP) is also available if firms incur a loss of 30 per cent of revenue as a result of the alert level increase. The RSP is worth up to $1500 plus $400 per full-time equivalent employee, up to a maximum of 50 full-time employees (so up to a total of $21,500). The Resurgence Support payment covers other costs apart from wages, that businesses may incur. Resurgence applications will be on the Inland Revenue site from early next week.
https://www.ird.govt.nz/covid-19/business-and-organisations/resurgence-support-payment

Businesses can apply for both payments.

Other relief businesses could apply for is the Leave Support Scheme (LSS) which provides a two-week lump sum payment of either $585.80 per week for full-time workers, or $350 per week for part-time workers, who must self-isolate and cannot work from home.

Also, the Short-Term Absence Payment (STAP) provides a one-off (once per 30 days) $350 payment for workers who must miss work due to a COVID-19 test and cannot work from home.