Can you use DISC for hiring in Australia?
It is the question we are asked most often by managers, and the honest answer costs us sales. We are going to give it anyway.
You should not use DISC to decide who gets hired, promoted or let go. No Australian law bans personality testing in recruitment outright, but using a behavioural questionnaire as a selection filter creates genuine exposure under the Fair Work Act, federal and state anti-discrimination law and privacy obligations. The evidence does not support it either: DISC was never designed to predict job performance, and it does not.
The legal exposure, in plain terms
Nothing in Australian law says "you may not give a candidate a DISC test". The problem is what happens when a result shapes a decision.
- Adverse action under the Fair Work Act. Refusing to employ someone is adverse action. If a candidate alleges it was connected to a protected attribute, the employer generally bears the onus of proving the actual reason. A behavioural profile in the decision file makes that harder, not easier.
- Indirect discrimination. A test applied to everyone can still be unlawful if it disadvantages people sharing a protected attribute and is not reasonable in the circumstances. Self-report behavioural instruments can disadvantage candidates whose communication style reflects disability, neurodivergence or cultural background, and "we gave everyone the same test" is not a defence.
- Privacy obligations. Assessment results are personal information. If you collect them you need to be able to say why you needed them, what you did with them, how long you kept them and who else saw them.
- Australian Consumer Law. This one points at vendors. A provider implying an instrument predicts performance, or that it carries an accreditation that does not exist, is making claims that have to be true.
This is general information, not legal advice. If you are designing a selection process, get advice on your own circumstances.
The evidence problem
Set the law aside for a moment, because the practical case is just as strong.
DISC was never built to predict job performance. Marston described behavioural tendencies in 1928; he was not building a selection tool, and nothing in the model claims that one style does a job better than another. A DISC report tells you how someone tends to behave, not how well they will do the work.
There is a second, more technical problem. Most DISC instruments, ours included, use a forced-choice format that produces ipsative scores: the four numbers describe how the dimensions rank within one person and always sum to the same total. That is fine for self-awareness and poor for comparing candidates, because a score that is relative to itself cannot cleanly rank one person against another.
When organisations use DISC in hiring anyway, they usually drift toward a "profile of the ideal candidate", which is where it stops being a questionnaire problem and becomes a discrimination problem. You end up selecting for people who resemble the current team, and calling it fit.
Where DISC genuinely helps in the employment relationship
Once someone has the job, a profile shortcuts weeks of working out how they like to be briefed and how they handle pressure.
A shared language for why one person wants the detail and another wants the decision. This is what the instrument is for.
Often the highest-value use. A manager seeing their own style is a cheaper intervention than most leadership training.
Every one of these is a decision about a person’s livelihood. None should rest on a self-report questionnaire.
What to do instead
- Structured interviews. Same questions, same order, scored against criteria written before you met anyone. Unglamorous and consistently effective.
- Work samples. Ask candidates to do a small, realistic piece of the actual job. Nothing predicts performance like performance.
- Job-related reference checks. Specific questions about specific behaviours, not general impressions.
- Write the criteria down first. Most unfair hiring is not malice, it is criteria invented after the fact to justify a preference.
Use it where it works
Take the test free, or set your team up with reports, and keep it where it belongs: the conversation after the decision.
Common questions
Is it illegal to use DISC in recruitment in Australia?
There is no law that bans personality testing in hiring. The risk is not a specific prohibition, it is general law applied to a specific use: adverse action under the Fair Work Act, indirect discrimination under federal and state anti-discrimination law, privacy obligations when you collect and keep personal information, and Australian Consumer Law if a vendor misrepresented what the instrument can do. This is general information, not legal advice.
What if the test is only one input among many?
That is the most common defence and it is weaker than it sounds. If a result influenced the decision at all, it formed part of the reason, and in a Fair Work general protections claim the employer carries the onus of proving the real reason for its action. A file note recording a candidate’s DISC style is not a document you want to produce in that proceeding.
Can I use DISC after someone is hired?
Yes, and that is where it belongs. Once the decision is made, a profile is a useful onboarding tool: how the new person prefers to communicate, what pace suits them, how they like feedback. Keep it voluntary, keep it away from performance management, and be clear with people that it has no bearing on their standing.
What should I use instead for selection?
Structured interviews, where every candidate gets the same questions scored against the same criteria, and work sample tests where candidates do something close to the actual job. Both consistently outperform personality instruments at predicting performance, and both are far easier to defend if a decision is challenged.
A provider told me their instrument is validated for selection. Are they wrong?
Not necessarily. Some occupational instruments have genuine criterion validity evidence for specific roles, which is a different and more serious thing than a DISC style report, and they are normally administered under professional supervision. Ask for the technical manual and look for the evidence specific to selection. If the answer is a brochure rather than a document, you have your answer.
Does your test allow it?
No. Our terms prohibit using our reports for recruitment, promotion, redundancy, pay or any other employment decision. We have no validation study and no norm sample, which we set out in full in our methodology, and using it as a selection filter would be indefensible.