The Glenn inquiry into child abuse and domestic violence will deliver its first report next Monday.
The inquiry, funded by millionaire businessman Owen Glenn, has faced a series of delays and setbacks, pushing its planned reports back by nearly a year.
But it said today that it would deliver The People's Report, a study of the experiences of about 500 people involved in the sector, particularly abuse survivors.
The report is a precursor to a final report expected this year. It is understood it will call for major government-led change in the sector.
The report will be released in Wellington, with the inquiry's chairman, former Supreme Court judge Bill Wilson, and chief executive Kirsten Rei fronting the media. Glenn is not expected to attend.
The inquiry was launched by Glenn to great fanfare.
But it hit several hurdles, including the resignation of original chief executive Ruth Herbert and key staff after a breakdown in relations with Glenn, concerns over the safety of information, sparking a review, and revelations in the Sunday Star-Times that Glenn had not disclosed that he had once faced domestic abuse charges in Hawaii.
That precipitated the exodus of most of an advisory panel of experts convened to assist the inquiry.