Despite the move to alert level 3 this week, Countdown stores remained busier than normal, general manager of health and safety Kiri Hannifin said.
"Unfortunately, we're still seeing a concerning level of abuse against our team and this hasn't eased off even as we transition to alert level 3," she said.
The abuse and violence were "incredibly disheartening" for the Countdown team who had worked hard to look after Kiwis during the lockdown.
Customer numbers were still being limited in stores at any one time and shoppers were required to maintain physical distancing guidelines.
Before New Zealand entered the lockdown, Prime Minister Jacinda Ardern urged Kiwis to "be kind" to one another.