DOC staff have had stones thrown at them, faced death threats and been the victim of other abuse 69 times in less than two years.
The Department of Conservation said its workers were facing intense, increased and deeply personal attacks.
Documents released under the Official Information Act showed workers had copped abuse of a threatening nature on 69 occasions between October 2017 and May this year.
The majority of threats related to DOC's use of 1080 poison.
Threats had been made to burn down DOC offices, shoot down aircraft flying 1080 operations and kill or maim workers.