Annual reports

GCSB Annual Report 2025

This is the annual report of the Government Communications Security Bureau (GCSB) for the year ended 30 June 2025.

Organisational health and capability

Our people

The GCSB continues to prioritise initiatives to attract and retain a diverse workforce, including competitive remuneration, closing gender and ethnic pay gaps, enabling more flexible working, investing in employee development and fostering an inclusive culture. The GCSB shares corporate service functions with the NZSIS.

Workforce changes

The GCSB and the NZSIS undertook a joint work programme in late 2023 to ensure our two agencies are financially sustainability in the longer term, and in the context of the current fiscal environment. This included a joint review of our workforces in 2024. This was separate from the efficiency savings sought through the Budget 2024 Initial Baseline Exercise. The change process also focused on maintaining core business, maximising alignment between the agencies and reducing unnecessary duplication.

The change process addressed these cost pressures in the near term. It involved the reallocation of vacancies and certain roles, including disestablishing some roles, and redeploying some of our shared staff in joint enabling functions between the NZSIS and the GCSB. A small number of people from across the GCSB and NZSIS were made redundant through this change process. This change process also led to the creation of roles within new organisational structures. The changes were implemented in early March 2025, with recruitment underway.

The overview of the change process provides an account of the agencies evolving role structure, highlighting both current vacancies and filled positions in the context of recent workforce changes, including role reallocations, disestablishments, and redeployments.  In contrast, the table below outlines data related to our current workforce, reporting solely on roles that are currently filled.  Vacant positions are not reflected in the table.

Workforce profile as at 30 June 2025
  2020/21 2021/22 2022/23 2023/24 2024/25
Headcount 551 535 546 605 601
Full-time equivalents (FTEs) 543.9 527.6 539.8 596.7 589.3
Average age (years) 43.1 42.7 42.2 41.7 42.4
Unplanned turnover (percent) 8.1% 19.3% 15.6% 11.2% 10.9%
Average length of service (years) 6.4 6.5 6.3 5.9 6.3

Promoting diversity and inclusion

Like New Zealand, our workforce and work environment is diverse, and our collective diversity is celebrated and embraced. Our mission of keeping New Zealand and New Zealanders safe from significant national security threats is strengthened through the different ideas, perspectives, skills, and experiences of staff.

What we did to promote diversity and inclusion in 2024/25

We focused on maintaining work underway, for example, our Kia Toipoto Pay Gap Action Plan. A key highlight of this was the finalisation of our Behavioural Competency Framework, and work to embed this into relevant people policies, processes and practices.

In addition, we developed and implemented our People Leader programme. This is a compulsory programme for all new managers, which embeds our essential Diversity and Inclusion training. We also continued to work on improving our data collection to better measure the impact of activities undertaken to embed diversity and inclusion within our people policies, processes and practices.

Demographic profiles of our workforce as at 30 June 20253

Demographic profiles of our workforce as at 30 June 2025 - gender.
 Gender 2020/21 2021/22 2022/23 2023/24 2024/25
Male 64.5% 61.1% 63.2% 64.0% 64.2%
Female 34.9% 37.9% 35.5% 35.2% 34.9%
Another gender 0.2% 0.2% 0.6% 0.8% 0.7%
Undisclosed 0.4% 0.8% 0.7% 0.0% 0.2%

 

Demographic profiles of our workforce as at 30 June 2025 - ethnicity.
 Ethnicity 2020/21 2021/22 2022/23 2023/24 2024/25
European 76.0% 74.6% 77.5% 77.7% 76.9%
New Zealander 22.8% 18.5% - - -
New Zealand Māori 7.2% 9.1% 9.8% 9.5% 9.7%
Asian 7.2% 7.3% 7.3% 9.0% 8.8%
Pacific Peoples 2.6% 3.2% 3.1% 3.3% 3.6%
Middle Eastern, Latin American, and African (MELAA) 1.2% 1.6% 0.8% 1.1% 1.1%
Other 0.2% 0.2% 15.7% 13.0% 14.4%

3 Staff can choose whether or not to disclose their ethnicity. The ethnicity metrics are calculated by taking the number of people who identify themselves as being in the ethnic group divided by the number of people who have provided an ethnicity. A person may identify with multiple ethnicities. This means the total of all percentages can add up to over 100 percent.

Demographic profile of our senior management as at 30 June 2025

Demographic profile of our senior management as at 30 June 2025 - Gender.
 Gender 2020/21 2021/22 2022/23 2023/24 2024/25
Male 47.8% 36.8% 40.0% 46.9% 48.5%
Female 52.2% 63.2% 60.0% 53.1% 51.5%
Undisclosed - - - - -

 

Demographic profile of our senior management (Tier 2 and 3) as at 30 June 2025 - Ethnicity.
European New Zealand Māori Asian Pacific Peoples MELAA Other
77.4 22.6 6.5 - - 16.1

 

Gender Pay Gap

The gender pay gap is a high-level indicator of the difference between female and male earnings. It is a comparison of the annual fulltime salary earned by male and female staff, including permanent, fixed-term and seconded out staff in accordance with Te Kawa Mataaho guidance on calculating the gap.

Addressing our gender pay gap was a key feature of our 2021-2025 Diversity and Inclusion Strategy. As at 30 June 2025 our average gender pay gap was 1.4 percent. This is an increase of 0.3 percentage points since last year.

Ethnic Pay Gaps

Each category requires 20 or more staff to identify as part of this group to enable this reporting. This is the first year that Pacific Peoples has been included as a category in our agency’s data as there are now 20 or more staff that identify within this group.

 

 

Bar chart showing ethnic pay gaps from June 2022 to June 2025: European employees have a consistent negative gap (around -5%), while Māori and Asian gaps are positive but generally decreasing. In June 2025, Pacific Peoples show a markedly higher positive pay gap of 15.7%, the largest among all groups.

Ethnic Pay Gaps 2022-2025

 

 

Progress against Te Kawa Mataaho Papa Pounamu Commitments

Te Urupae i te Mariu | Addressing bias
  • 72.2 percent of GCSB people leaders and 87.5 percent of our senior management completed our Understanding & Managing Unconscious Bias learning module.
Te āheinga ā-ahurea | Cultural competence
  • We have further refined our Pasifika Matters Workshop, which explores the diversity of the Pacific Island region and the relationship with, and experience of, Pasifika people in Aotearoa New Zealand.
  • We continued to deliver workshops which develop our people’s capability to engage effectively with Iwi and Māori in undertaking our national security functions. These are key to ensuring we can attract and retain the talent required to achieve our national security outcomes.
Hautūtanga Ngākau Tuwhere | Inclusive leadership
  • We launched our new People Leaders programme, designed to provide a clear understanding of how to manage, and also manage within the context of our workforce. The programme follows best practice inclusive leadership practices, as well as other internal frameworks, such as our recently completed Behavioural Competency Framework – which is being implemented in 2025/26. All current People Leaders are expected to complete the programme. Following this, all new People Leaders will complete the programme within three months of beginning their Leadership position.
  • We finalised our new People Leader Pathway. The pathway is designed to support our People Leaders accessibility to essential learning, as well as recommended learning, all of which covers content from Management, Leadership, and Coaching practices. This will be launched to all People Leaders in 2025/26.
Ngā tūhohonga e kōkiritia ana e ngā kaimahi | Employee-led networks
  • We formally launched our newest employee-led network, Te Kāhui Māori, which is open to all staff who identify as Māori and/or have a strong interest in, or connection to, Te Ao Māori.
  • Together, our Te Kāhui Māori employee-led network and Te Ao Māori team developed tikanga and kawa guidance for the NZIC, aimed at ensuring our people are able to lead and support mihi whakatau and pōwhiri.
Hautūtanga Kākano Rau | Fostering diverse leadership
  • We will be exploring this further in the next iteration of our Diversity and Inclusion Strategy, and new Workforce Capability Strategy, which are due to be delivered in 2025/26 and 2026/27 respectively.

Providing a safe and healthy workplace

The health, safety and wellbeing function exists to protect our people and support our People Leaders to meet their responsibilities under the Health and Safety at Work Act 2015. This includes providing clear advice, building capability and enabling leaders to exercise due diligence. By fostering safe, healthy and supportive environments, we support the mission by helping everyone succeed in their roles and thrive at work.

Governance and leadership

As part of the transition programme, a new vision for future-state governance was developed. This included the finalisation of new terms of reference for our joint GCSB and NZSIS Health and Safety Governance Groups. These groups include all senior leaders from each agency. Together, they exercise due diligence and ensure health, safety and wellbeing are strategically prioritised.

We continue to strengthen engagement through our Health and Safety Representatives. Investment in Health and Safety Representative training and support was highlighted by our 2025 Health and Safety Representative Conference. Leaders also joined Health and Safety Representatives on frontline work area walks to better understand the realities of “work as done”.

This year, we reviewed our Health, Safety and Wellbeing Policy to reinforce our commitment to continual improvement and practical risk management. Our Wellbeing Psychology Services Policy, including psychosocial and psychological support services, was also reviewed to better reflect the needs of our people.

Capability and capacity

Senior leaders are active participants in the Business Leaders’ Health and Safety Forum. We are also members of the Government Health and Safety Lead, where we delivered a Positive Workplace Cultures programme in July 2024, to support safer, more respectful workplaces.

In delivering Mātai, our all-of-government data centre, we demonstrated how overlapping duties can be managed in practice. A dedicated Senior Health and Safety Advisor supported the coordination of contractors and partners. The project was completed with one notifiable (non-injury) incident reported, and no notifiable events in the 2024/25 year.

Risk management

We continue to build a deeper understanding of our critical risks by engaging directly with workers through targeted surveys and structured analysis. These insights help us explore how our people interact with high-consequence risks in practice and ensure our risk management strategies reflect real-world work.

At the same time, we are strengthening our approach to more frequent, lower-impact risks by embedding hazard and risk management frameworks that build frontline capability and ownership. This includes equipping workers and teams with the tools and confidence to proactively identify, assess and respond to risk in diverse working environments.

Building our Māori Cultural Capability

Like other enabling functions in our agencies, the GCSB and the NZSIS have a shared Te Ao Māori team, whose insights helped reset our respective organisational strategies. Our Māori Cultural Capability is key to both organisational strategies, which signal the shared ambition to be an honourable and capable Treaty partner. Building our Māori cultural capability therefore continues to be a critical factor in enabling our people, systems and processes to give effect to the Treaty of Waitangi. 

The Māori Outcomes Strategy – He Waka Haumaru continues to provide a roadmap in lifting organisational Māori cultural capability. The strategy is supported by three strategic pou outlined below, which are each underpinned with objectives and initiatives.

Kia Hono - Trusted partnerships

We continued to engage with Iwi Chairs and strengthen relationships with mana whenua this year. Work remains underway to enhance our service delivery to improve national security outcomes for Māori. 

Kia Maia – Culturally Capable

We continue to provide various learning and development opportunities for staff to build their competency in te reo Māori. During the reporting period, we released new online courses focussed on increasing knowledge in Te Ao Māori and the Treaty of Waitangi. Tikanga Māori continues to be an integral part of workplace culture, extending through to the formal welcomes for new staff, international guests and delegations. Our Māori staff network, Te Kāhui Māori, plays a leading role in uplift activities and events. 

Kia Manawanui – Building Resilience

We initiated the formation of a Protective Security Māori Stakeholder Reference Group. The purpose of establishing this group was to seek expert advice on shaping protective security guidance to increase the accessibility, resonance and impact for Māori. The Reference Group meets on a bi-monthly basis and is assisting in the design and delivery of a new product for Māori audiences, and is identifying effective engagement channels and opportunities to partner for impact.

Delivery of Mātai, our All-of-Government Data Centre

In addition to providing customers with signals intelligence and improving cyber resilience, we work to support New Zealand’s national security sector to securely store sensitive information. We partnered with the NZDF to construct an all-of-Government data centre at Royal New Zealand Air Force Base Auckland (Whenuapai) to house New Zealand’s most sensitive official information. This was an important build that will significantly strengthen the resilience of the Government’s digital infrastructure.

The Minister Responsible for the GCSB, Hon Judith Collins KC officially opened the Data Centre on 27 June 2025. The Data Centre is an investment that had been years in the planning, with earthworks commencing in 2021, and construction beginning in September 2022.

Carbon Neutral Government Programme

We continue to work through the requirements and challenges of the Carbon Neutral Government Programme (CNGP) and operating in an emissions and energy friendly manner.

Independent Verification

The GCSB has completed independent emission verification with Toitū against ISO14064-1:2018 for 2018/19 (our baseline year), as well as 2021/22, 2022/23, and 2023/24. The emissions reported here have not been independently verified for 2024/25 at the time of reporting.

The greenhouse gas emissions measurement (emissions data and calculations) reported in this annual report have been calculated in a variety of ways. These are based on solid supplier data, where it is available and practical, internal records, and an extrapolation of a sample of underlying financial records for certain emission sources. 

 In 2024/25 we estimate we emitted 2,645 Tonnes CO2-e, based on our sampled data and extrapolation. This compares to our verified figure of 2,350 Tonnes CO2-e in 2023/24. Most of our emissions came from passenger transport, as well as electricity and motor vehicles. 

Our all-of-government data centre is not included in the inventory for 2024/25, as it was officially opened on 27 June 2025. It will be included in the inventory for the next financial year.

Our Reduction Targets and Results to 1.5 Degree Pathway Reduction

The Government set the following emission reduction targets for government departments, as required by the CNGP.

  • 2025 target: Gross emissions (all Categories) to be no more than 1,930 Tonnes CO2-e, or a 21 percent reduction in gross emissions (all Categories) compared to the base year, and
  • 2030 target: Gross emissions (all Categories) to be no more than 1,376 Tonnes CO2-e, or a 42 percent reduction in gross emissions (all Categories) compared to base year
Bar and line chart comparing actual GCSB emissions with a 1.5 degree Celsius reduction pathway from 2018/19 to 2029/30. Actual emissions fluctuate and generally exceed the steadily declining target pathway over time.

GCSB Actuals VS 1.5 Degree Pathway Reduction