One in four police staff reported they have experienced incidents of abuse, bullying behaviour, or harassment, according to a survey commissioned by the IPCA.
The figure comes from a staff survey commissioned by the Independent Police Conduct Authority.
Last year, RNZ spoke to more than 120 sworn and non-sworn police employees about bullying, which launched two formal investigations.
Over 80 percent of those who took part in the survey said police was a great place to work, but a third of them also felt the organisation tolerated workplace bullying or harassment.
Police leadership said the findings were a cause for concern and must be addressed.
Commissioner Andrew Coster said they were already working to improve the organisation's culture.
RNZ