He had been "frustrated" to hear a minister respond "they're getting the wage subsidy and the (Covid) resurgence support payment and now they want more?"
He declined to name the minister.
The wage subsidy did not support an employer. It went straight to the employee and the business owner had to pay 80 per cent of the wage to qualify, Barnett said.
"Having to explain that to some of them is frustrating. They have no idea of the (Covid) pressure on businesses and communities."
Business owners in lockdown and Covid restrictions still had to pay rent, rates, power and other overheads. They were doing so out of their own pockets, said Barnett.
"We have been asked to pause business so that Government can implement their elimination strategy for the good of New Zealand so a continuation of the resurgence package is not a big ask."
He said he'd been contacted by SME owners as far away as Fiordland "telling me their stories and how destructive lockdowns have been to their sectors".
The petition launched on Monday at 11am. By 3.30pm that day it had gathered more than 7000 signatures.