New Police Commissioner Peter Marshall has started work today, after taking over from Howard Broad.
Marshall has been a police officer for 38 years and has held top posts in Washington DC and the Solomon Islands.
Staff at Police National Headquarters in Wellington planned a low-key welcome, police media liaison Jon Neilson said.
"Apart from a welcome morning tea, it'll be down to work."
Broad and his deputy, Rob Pope, finished their roles last week.
Pope was replaced by Superintendent Mike Bush, a former district commander for the Counties-Manukau.
Marshall has been appointed for a three-year term, and Mr Bush a five-year term.