The quality of an expert report is set long before the expert starts writing. It is set by the brief. A vague instruction produces a vague opinion, an incomplete brief produces a report built on the wrong facts, and a bloated brief burns fees on reading that was never needed.
Briefing well is a repeatable skill. The structure below works across disciplines, from medical and psychiatric assessments to engineering, construction and quantum.
Start with the question, not the CV
Before approaching anyone, write down the precise questions you need answered and the issue in the proceeding each one goes to. The questions determine the discipline, the seniority and the kind of expert you need. Choosing a name first and working out the questions later is how matters end up with an impressive expert answering the wrong question.
The letter of instruction
- Identify the proceeding, the parties and the expert's role in it
- State the questions clearly, numbered, and confined to the expert's field
- Set out the assumptions the expert is asked to adopt, and identify them as assumptions
- List and index every document provided, so the record of what the opinion rests on is exact
- Attach the expert witness Code of Conduct and require confirmation of compliance
- Confirm the timetable, the report format required by the rules, and the agreed fee basis
What to include, and what to hold back
Give the expert everything material to the question, including documents that cut against your case. An opinion that ignored unhelpful material will not survive cross examination, and the gap will be discovered.
At the same time, be deliberate about what goes in the brief. Instructions and materials an expert relies on are generally not protected once the report is served, so assume everything you provide may be seen by the other side. Keep strategic commentary out of the brief entirely.
Independence: the line you must not cross
You may test an expert's reasoning, point out factual errors, and ask them to address matters they have overlooked. You must not tell them what to conclude, draft their opinion, or pressure them to soften findings. The opinion has to be genuinely theirs. An expert who simply adopts the retaining party's position is worthless at trial, and the process that produced the report is a legitimate target for cross examination.
Timelines and logistics
- Engage early: the best experts are booked months ahead, and late engagement compounds every other problem
- Build in time for a draft review confined to accuracy and completeness, then for compliance checks
- Confirm availability for joint conferences, mediation dates and the trial window at engagement, not after
- Agree in writing how supplementary questions and updated materials will be handled
Before the joint conference
If the experts will confer, prepare your expert properly: make sure they hold the complete picture, understand the areas of genuine disagreement, and go in ready to concede points that should be conceded. Credibility conceded early is authority banked for the points that matter.
How Experts Edge helps
Experts Edge matches Queensland litigation teams with conflict checked experts by discipline and litigation fit, and every expert is screened for report writing and courtroom experience before introduction. You start the brief with an expert who already knows what a compliant engagement looks like.
This article is general information, not legal advice.