The report notes that cabinet approval would be required and also blacks out of the timing of the decision using the same clause in the Official Information Act.
Labour Finance Minister Grant Roberson told the Herald prior to the election that the party wanted to gradually increase the minimum contribution rate for KiwiSaver from 3 per cent to 4.5 per cent.
More than 2.7 million people are signed up to the KiwiSaver scheme but about 500,000 adults still remain outside of the scheme.
Robertson said Labour wanted to make KiwiSaver universal but it recognised those who were not in the scheme were largely on low incomes.
"We are still committed to a universal KiwiSaver.
"The reality is that with 2.8 million people in the scheme now, the majority who are not are low-income New Zealanders."
Robertson said the Government wanted to work with unions and business to bring low-income workers into the scheme.
"We want to develop a scheme, on a tripartite basis with business and unions that brings them into the scheme in a sustainable way and as wages rise."
Exactly how and when this would happen had not been worked out before the party came into power.
Robertson said it would still exclude students, beneficiaries and self-employed people from having to join KiwiSaver.