The Labour Party says some of the Government's new appointments to the Human Rights Review Tribunal appear to be political favours.
Nine new appointments have been made to the 12-member tribunal, which deals with complaints about human rights violations.
Labour says it is particularly concerned about the inclusion of the former National Party MP Brian Neeson, who voted against banning discrimination on the grounds of sexual orientation in several pieces of legislation.
It says the Justice Minister, Simon Power, should be forced to explain his choices.
Mr Power has declined to comment, and Mr Neeson could not be reached for comment.