Cabinet Minister Kiri Allan has flatly denied ever treating staff poorly after revelations several public services bosses have previously flagged concerns.

A Department of Conservation staffer seconded to Ms Allan's office left more than a year ago due to problems with work relationships. 

The chief executive of the National Emergency Management Agency also says he was aware of concerns about relationships in the Minister's office.

Deputy Political Editor Craig McCulloch spoke to Perlina Lau.