The statement said Kerr-Newell regally took time-in-lieu which he was not entitled to, which he used to travel to New Zealand on wind farm business.
This cost ratepayers in the Shire approximately $78,000.
He also used his position to hire Bronwyn Little, who he had an intimate relationship with, to the role of Strategic Planning Manager at the Shire.
"In doing so, he corrupted the recruitment process by affording Ms Little the opportunity to write the job description and even appointed her before the application closing date."
"Kerr-Newell also failed to accurately disclose the true nature of their relationship or his conflict of interest, and increased her salary by $24,000 (in total)."
A spokesperson for CHB District Council said Kerr-Newell left to pursue other opportunities in local government.
Earlier reports said Kerr-Newell was also Chief Executive at Hutt City Council, New Plymouth City Council and Rodney City Council.
It was through his role at Hutt City Council that he met Bronwyn Little.