Half of Delta's executive leadership team has jumped ship as fallout from the pole scandal continues to rock the company.
Whistleblower Richard Healey said staff had been informed this week that capability and risk general manager Matt Ballard was leaving the Dunedin City Council-owned company.
This followed the resignations of asset management general manager Derek Todd and energy and communication general manager Kewal Bagal.
The confirmation three of Delta's six executive leadership team have resigned comes as it and its sister company Aurora face renewed pressure from WorkSafe over Delta's accelerated programme to replace close to 3000 compromised poles.
A WorkSafe spokesman said it expected Delta to prioritise the replacement of poles in high-risk areas, including near schools.