Ardern said details of the extension would be finalised over the weekend, but it will be nationwide and will cover the period of time that level 3 restrictions are in place.
According to economic consultancy NZIER, lockdown measures to date have knocked out three years' worth of GDP growth, wiping $21 billion off the size of the economy and bringing it back to 2016 levels.
Earlier today Westpac said a short period of lockdown at alert levels 2 and 3 "would have little lasting economic impact" to the economy.
However, a new level 4 lockdown would have "more severe" economic implications although "international experience shows that losing control of the virus would be much more damaging to the economy" than further lockdowns.
David Searle, National chairman of Baker Tilly Staples Rodway, said leaving Auckland in Level 3 and the rest of the country at Level 2 until 11.59pm on Wednesday 26th August seems an appropriate response.
"If things improve quicker than expected the Government should revisit when they review settings on August 21.
"The extension of the wage subsidy is welcomed especially for badly affected industries," he said.
Sick leave and mortgage deferral scheme
Robertson said Cabinet had also decided to modify the Covid-19 Sick Leave Scheme to make it more accessible.
Details of the "in principal decision" would be finalised over the weekend and announced on Monday.
An extension to the mortgage deferral scheme had also been agreed in-principle as part of the plan to support households, as the existing scheme expires on September 27.
Details, including the length of the extension, would be announced next week.
"The latest Covid-19 outbreak is obviously disappointing, especially for businesses that have just got up and running again," Robertson said.
"We have always said that the best economic response is a strong health response. We have moved quickly to identify cases and contact-trace as part of the resurgence plan announced by the Prime Minister in July."
Open and shut rules for business "unfair"
Auckland Business Chamber CEO Michael Barnett said today that the Government should focus on "crushing the cluster, not businesses who are being denied the opportunity to trade" when they can comply with lockdown and alert level hygiene, safety and security rules.
"The system designating some businesses as "essential" while others have to shut down when they provide the same services and products is an unfair lottery, picking winners and losers," Mr Barnett said in a statement.
"Supermarkets can sell everything, the local dairy is open, but the local butcher or greengrocer has to close. Abattoirs, manufacturers, exporters, hospitality outlets and retail shops all have to shut or their operations restricted. Why? Complying with rules and regulations is what they do every day."
Mr Barnett said that discussions with Treasury over continuation of the wage subsidy and other support mechanisms to help ease cash flow, provide some certainty to employment and business continuity have been constructive, Mr Barnett said.
