Prime Minister and Labour Party president want to ensure future events are safe.
The review of Labour Party processes could include previously unheard of historic cases of sexual assault within the party.
The review was ordered in light of a boozy party at a camp at Waihi, which resulted in allegations of sexual assault.
The outline for lawyer Maria Berryman's review of LabourParty processes was released today and included an email address for people to bring historic cases to Berryman's attention.
The review would look at whether the party's processes in place at the time of the Waihi camp were lawful, whether they were applied correctly and whether a safe environment was provided for attending young people.
It would also assess the management of events and handling of complaints.
Berryman would have the power to make recommendations to the Labour Party, but won't be looking specifically into the four complaints.
The review was expected to take two to three months and every member of the party would be contacted in relation to it, Labour Party president Nigel Haworth said.
"A statement will be issued when the review has been completed, outlining any recommendations as well as the steps the Labour Party will be taking to implement them," he said.
