Labour MP Trevor Mallard has accused Education Minister Hekia Parata of hitting a former staff member on the head with her hand - an allegation she vehemently denies.
Mr Mallard made the claim at the education select committee at Parliament this morning and repeated the claim outside the hearing.
"I can tell you categorically that I have never hit a staff member in my current employ or in my previous employ," Ms Parata told reporters afterwards
She said she was "aware there has been a rumour but there is no substance to it."
"I think it is really inappropriate, offensive and inaccurate."