Classification system

How to declassify information

This section provides guidance to organisations on how to declassify government information. The guidance is for any agency needing information on how to meet the requirements for declassifying government information contained in the New Zealand Government Information Security Classification System (Classification System).

Government information is all information, regardless of form or format, from documents through to data.

The Classification System is mandatory for use within a prescribed list of mandated government departments, the NZ Police, and the NZ Defence Force [CAB (00) M42/4G/4]. This is aligned with the Cabinet decision in 2014 agreeing which agencies are mandated to follow the Protective Security Requirements (PSR) [CAB (14) 39/38].

Other government agencies are encouraged to voluntarily adopt the Classification System as a best practice framework for classifying, handling, and protecting government information.

In this guide:

  • Section 1 provides general guidance to all agencies on declassification.
  • Section 2 provides specific guidance for those agencies considering or delivering a programme to proactively declassify classified historical records.

Section 1
General Guidance

Principle 4

Information declassification

Government information must not remain classified indefinitely without being subject to review for declassification in line with the Public Records Act 2005, Information and Records Management Standard, and the organisation’s declassification policy. This policy should be made available to the public to improve transparency and accountability of declassification decisions.

Policy to support information declassification

Policy Statement: Agency heads must establish an organisational declassification policy and procedures in line with the Classification System and relevant legislation including Official Information Act 1982, Public Records Act 2005, Privacy Act 2020, and requirements contained in relevant international agreements or arrangements. The following requirements should be considered when establishing organisational declassification policies and procedures.

Understanding classified information holdings: to inform the design of their declassification policy and criteria, Agencies must have a clear understanding of their classified information holdings as part of their obligations under the Public Records Act 2005 and the Information and Records Management Standard.

Declassification policy: agencies that hold classified information must have a policy that establishes a systematic approach to declassifying government information. This policy must prohibit the indefinite classification of government information without transparent criteria, review periods, and decisions. This policy should be made available to the public to improve transparency and accountability of declassification decisions.

Declassification criteria: not all information may be suitable for declassification if it is of short-term or low value. Within the classification policy, decision makers need to set up and use criteria to clearly articulate the rules for declassification in the organisation (e.g., information types, review periods, harm test rules, declassification topics and priorities). The criteria should be consistent with information and records management practices and decisions (e.g., appraisal, sentencing, and disposal.) The criteria should be used to prioritise how resources are allocated and to agree the scope and plan for a declassification programme. These criteria should be clear, transparent, and objective and reflect the expected value to New Zealand of the declassification programme.

Declassification governance: agencies must establish an appropriate governance framework for declassification. Governance must ensure that investment in declassification delivers value for the public, set precedents for reviews, arbitrate declassification decisions when conflicting opinions arise, and make final decisions on declassification matters that are referred for consideration.

Declassification programme: agencies must appropriately resource and establish a regular programme for declassifying government information in line with their policy and priorities. Agencies must report transparently on the progress, results, and expected value that the programme delivered.

Impact on agencies

What do I need to do?

For most agencies, the main mechanisms through which information is declassified are official information requests and the proactive release of government information such as OIA responses and Cabinet Papers.

Do I need a declassification programme?

Declassification programmes are relevant only to organisations that hold classified historical archives that contain information of public interest.

Most classified historical information will not be suitable for release. For example, it would never be in the public interest to release an individual’s medical records, which may be held for a long time without any expectation of release. Equally, some classified holdings may be of no obvious utility or interest to the public and are therefore unsuitable for public release.

If an agency holds classified historical information whose release would be of public value, it should have policy and procedure describing its approach to declassifying those archives.

Section 2 provides some guidance to those agencies for whom this may be relevant.

Section 2
Guidance for agencies seeking to implement a declassification programme