Body cameras are being rolled out across all Woolworths' New Zealand stores.

It's introducing a suite of new security measures to de-escalate violent customer confrontations.

Physical assaults on staff have risen 75-percent over the past three years - and serious reportable events are up 148-percent.

Head of Safety, Health and Wellbeing Denva Wren says a lot of work's gone into meeting privacy requirements, and footage will only go to Police.

She told Heather du Plessis-Allan Woolworths wants to hold offenders to account and assure they can prosecute to the full extent of the law.

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