More lawyers and human rights activists have added their voice to the chorus of concerns over secret courts.
The Law Society this week warned about last minute changes to health and safety legislation. New amendments allow for "closed court proceedings" where top-secret evidence is concerned.
Now the Human Rights Lawyers Association and the Human Rights Foundation have weighed in, both writing to Workplace Relations and Safety Minister Michael Woodhouse.
Lawyers Andrew Britton and David Tong, of the HRLA, criticised how changes to the contentious legislation were made - by a Supplementary Order Paper - circumventing the need for public consultation.
"The HRLA believes that such fundamentals of our model of democracy should not be eroded without due process and robust public discussion," they wrote.
The Bill of Rights Act set standards for Parliament, and to dismiss them "makes a mockery of our legislative system and, indeed our model of democracy."