Can NDIS auditors interview any staff member, or only managers?

Approved quality auditors can interview any worker who delivers NDIS supports, including frontline support workers, team leaders, coordinators, and managers. They may also conduct confidential interviews with participants and, where appropriate, their families or informal supports.

What happens if a support worker gives a wrong answer during an auditor interview?

A single incorrect answer is unlikely to result in a non-conformance on its own. Auditors assess patterns across interviews. However, if multiple workers demonstrate the same knowledge gap — for example, all are unable to identify reportable incidents — that will likely be recorded as a systemic non-conformance against the relevant Practice Standard.

Are participant interviews kept confidential from the provider?

Yes. Auditors conduct participant interviews independently and do not share the specific content of what a participant said with the provider. Providers should never coach or instruct participants on how to respond; doing so would itself be a serious concern for the auditor.

How long does the interview stage of a SIL audit typically take?

The duration varies depending on the size of your service and the audit type (certification versus verification). A certification audit for a SIL service will generally include several hours across multiple interview sessions with workers and participants over the course of one or more site visit days.

What is the difference between a certification audit and a verification audit for SIL providers?

Certification audits assess compliance across all applicable Practice Standards modules and involve on-site visits, document review, and interviews. Verification audits are narrower, typically assessing a specific subset of standards or following up on previous non-conformances. Both can include worker and participant interviews.

Do workers need to memorise the NDIS Practice Standards to pass their interview?

No. Auditors do not expect workers to recite standards verbatim. They assess whether workers understand the practical meaning of their obligations — for example, knowing what to do when a participant is harmed, not knowing the exact rule number. Scenario-based preparation is far more effective than rote memorisation.

NDIS Auditor Interview Questions: A Worked Example

Why Auditor Interviews Matter for SIL Providers

When an approved quality auditor arrives at your service, document review accounts for only part of the assessment. A significant portion of every NDIS audit involves structured interviews with workers, team leaders, and participants. The auditor is trying to answer one central question: does the way your team actually works reflect what your policies say on paper?

For SIL providers operating under the strengthened NDIS Practice Standards — which have been progressively reinforced ahead of the 2026 mandatory registration deadline — this gap between policy and practice is the single most common source of non-conformances. Understanding the types of questions auditors ask, and rehearsing credible, evidence-anchored answers, gives your team a material advantage.

What Auditors Are Authorised to Ask

Approved quality auditors are registered with the NDIS Quality and Safeguards Commission and operate under the National Disability Insurance Scheme Act 2013 and associated rules. Their mandate extends to interviewing any staff member or participant connected to the registered provider. They are looking for:

Demonstrated knowledge of participant rights and the NDIS Code of Conduct
Consistent application of incident management and reportable incident obligations
Evidence that restrictive practices are authorised, monitored, and being reduced
Functioning complaints mechanisms that participants genuinely know about and can access
Worker screening compliance across all roles with risk of harm
Quality and continuous improvement processes that are embedded rather than performative

Interviews are not designed to catch workers off guard. Auditors expect reasonable variation in how individual workers express knowledge, but they do expect every team member to demonstrate a working understanding of the core obligations relevant to their role.

Common Auditor Interview Questions by Theme

1. Incident Reporting and Reportable Incidents

The NDIS Commission's incident management requirements sit at the heart of most SIL audits. Auditors will probe whether workers know the difference between an internal incident and a reportable incident, and whether they understand the timeframes for notification.

Question	What the auditor is checking
"If a participant had an unexplained injury this morning, what would you do?"	Worker awareness of the obligation to report and initiate internal review
"Can you tell me the difference between an incident you report internally and one that goes to the Commission?"	Knowledge of the reportable incidents categories under the NDIS (Incident Management and Reportable Incidents) Rules 2018
"Have you ever submitted or contributed to an incident report? Walk me through it."	Practical experience and whether the process is genuinely followed

2. Restrictive Practices

Auditors scrutinise restrictive practices closely, especially in SIL settings where environmental or chemical restraints may be in use. Every authorised restrictive practice must have an approved behaviour support plan, state authorisation where required, and a documented reduction plan.

Question	What the auditor is checking
"What restrictive practices are in place for any of your current participants?"	Awareness of which practices are active and whether workers can name them accurately
"Where would you find the behaviour support plan for a participant, and who wrote it?"	Whether plans are accessible and authored by a registered behaviour support practitioner
"How do you record when a restrictive practice is used?"	Whether data collection for reporting to the Commission is happening in practice

3. Participant Rights and the Code of Conduct

All workers delivering NDIS supports must comply with the NDIS Code of Conduct. Auditors test this by asking scenario-based questions rather than inviting workers to recite the Code from memory.

Question	What the auditor is checking
"If a participant told you they wanted to make a complaint about their support, what would you do?"	Worker ability to facilitate, not obstruct, access to the complaints process
"How would you support a participant to make a decision you personally disagreed with?"	Understanding of supported decision-making and the right to self-determination
"What would you do if you witnessed a colleague behaving inappropriately with a participant?"	Awareness of reportable conduct obligations and willingness to act

A Worked Example: Answering an Incident Question

Below is a worked example of how a support worker might respond to the unexplained injury question in a way that satisfies auditor expectations. This is illustrative only — your answer should reflect your organisation's actual procedures.

Auditor: "If you arrived for your shift and noticed a participant had a bruise on their arm that wasn't there yesterday and no one had reported anything, what would you do?"

Worker response (worked example): "First, I'd make sure the participant is comfortable and safe, and I'd ask them if they're okay and whether they know what happened — while being careful not to lead them. Then I'd document the injury immediately with a description and, if the participant consents, a photograph. I'd notify my supervisor straightaway, because unexplained injuries are on our internal incident list and could also be a reportable incident to the NDIS Commission depending on what we find out. Our house has an incident register and I'd complete the form before the end of my shift. If my supervisor assessed it as a reportable incident, our compliance lead would notify the Commission within the required timeframe through the provider portal."

This answer demonstrates: immediate safeguarding action, contemporaneous documentation, escalation to management, knowledge of the internal incident register, and awareness that the matter may require Commission notification. An auditor hearing this response has confidence the worker understands their obligations without needing to quote rule numbers.

How Team Leaders and Managers Are Interviewed Differently

Frontline workers are asked scenario and process questions. Team leaders and managers face a different tier of scrutiny, focused on governance, oversight, and continuous improvement. Expect questions such as:

"How do you monitor whether incidents are being reported consistently across the house?"
"Can you show me how complaints received in the past six months have been analysed for patterns?"
"How do you ensure a new support worker understands their obligations under the NDIS Code of Conduct before they commence shifts?"
"What has changed in your practice in the past year as a result of an incident or a quality improvement review?"
"How does your organisation verify that all workers have a current NDIS Worker Screening clearance?"

The last question is particularly important under 2026 registration requirements. The Commission expects providers to maintain a real-time register of screening outcomes and to be able to produce evidence of pre-commencement checks on request.

Preparing Your Team: A Practical Step Plan

Map questions to Practice Standards modules. Identify which questions probe which module (e.g., Module 1 for rights and responsibilities, the Specialist SIL module for overnight support and transitions).
Run scenario workshops, not rote rehearsal. Auditors detect rehearsed scripts. Use real incidents (de-identified) to practise responding naturally.
Ensure every worker knows where documents live. Auditors often ask workers to retrieve a behaviour support plan or complaints register on the spot. Test this before audit day.
Conduct a mock interview. Have your compliance lead or an external consultant ask questions as an auditor would, then debrief on gaps.
Brief participants separately. Participant interviews are confidential. Ensure participants know their rights, how to raise a concern, and that they can speak freely. Do not coach participants on what to say.
Document your preparation. Auditors view pre-audit preparation as evidence of a functioning quality system. Keep records of team briefings, mock interviews, and any policy updates made in response.

Common Non-Conformances Found During Worker Interviews

Based on the Commission's published guidance and the categories of findings disclosed through its regulatory actions, the most frequent interview-related non-conformances in SIL settings include:

Workers unable to identify which incidents are reportable to the Commission versus internal-only
Frontline staff unaware of active restrictive practices for participants they regularly support
No consistent process for informing participants of their right to complain
Managers unable to demonstrate how complaints data informs service improvement
Worker screening registers that are outdated or inaccessible during the audit

If your pre-audit preparation surfaces any of these gaps, address the underlying policy or training deficiency — not just the knowledge gap — before your audit date.

Providers building out their documentation ahead of the 2026 registration window may find the 74-document audit-ready SIL compliance kit available at ndiscompliant.com.au a useful foundation — it includes interview preparation guides, scenario training templates, and pre-formatted incident and restrictive practice registers aligned to current Commission requirements.

Important: This article provides general guidance about NDIS compliance requirements. It is not legal or professional advice. Requirements may change as the NDIS Commission updates its policies and Practice Standards. Always verify current requirements with the NDIS Quality and Safeguards Commission or a registered NDIS consultant before making compliance decisions.