Case Study & Presentation
Structure under time pressure — frameworks, recommendations, and Q&A.
What it is
Case study exercises give candidates 30–60 minutes to analyse a business scenario with supporting materials, then present a structured recommendation for 10–15 minutes followed by 5–10 minutes of Q&A. Consulting firms use the case study as the entire interview; investment banks and strategy teams use it as part of broader assessment centres. Some employers also run role-play or client scenario exercises alongside the case study.
Who uses it
- Strategy consulting firms: McKinsey, BCG, Bain, Oliver Wyman, Roland Berger (case interview format)
- Investment banking and corporate finance graduate schemes at assessment centres
- Big 4 consulting and advisory divisions
- Strategy and operations teams at major FMCG and technology companies
- Civil Service Fast Stream (analytical exercise variant)
What it tests
- Structuring an ambiguous problem quickly using frameworks (MECE, Issue Tree, 2×2 matrix)
- Identifying the most important issue in a data-heavy pack rather than addressing everything
- Making a clear, defensible recommendation — not a balanced 'on the one hand, on the other hand' non-answer
- Presentation delivery: intro-body-close structure, confident signposting, and Q&A handling
- Composure: explaining your logic clearly under challenge without losing confidence in your recommendation
Common mistakes
Diving into detail before framing the problem
Spend the first five minutes sketching the problem structure before opening the data pack. Skim the brief, outline your structure, and quantify the impact you'll focus on — state this framework aloud at the start of your presentation.
Reading from slides verbatim
Assessors score confidence lower immediately when candidates read verbatim. Use an intro-body-close structure, signpost each transition aloud ('Moving to the second point...'), and rehearse timings so you never need to read.
Ignoring data in the pack
Every exhibit in the case pack is fair game in Q&A. Skim all materials in the first ten minutes — even items that seem irrelevant often contain the number that resolves an apparent contradiction.
Not making a recommendation
A hedged conclusion ('it depends') fails. State your recommendation clearly — 'I recommend Option B because it delivers the highest margin improvement within the stated constraints' — and hold it under challenge.
Overrunning
Finish ten seconds early and pre-empt two likely questions in your closing slide. This demonstrates confidence and invites the Q&A on your terms rather than being cut off mid-point.
Getting flustered in role-play or client scenarios
If the exercise includes a role-play element, use the 'feel-felt-found' pattern to handle difficult stakeholders: 'I understand how you feel — others have felt the same — what we found was...' Acknowledge emotions before proposing solutions.
How to prepare
- 1Practice structuring answers to open business questions using MECE thinking (Mutually Exclusive, Collectively Exhaustive) — any standard case interview guide covers this in detail.
- 2Time yourself strictly: first practice with 60 minutes, then reduce to 40, then 30. Real case exercises often give less time than you expect.
- 3State assumptions out loud during your presentation and explain the trade-offs — assessors reward intellectual honesty over false certainty.
- 4Rehearse delivery without slides: if you can explain your recommendation clearly with no slides, the slides become a support tool rather than a crutch. Aim for 70% eye contact with the panel.
- 5Prepare for aggressive Q&A by having a colleague challenge your recommendation. Responding calmly to pushback is a scored skill — practice saying 'That's a fair challenge; my reasoning was...' without abandoning your position.
- 6After the assessment, send a thank-you email within 24 hours and request feedback on specific areas. Complete a short reflection on what landed well and what to sharpen — then feed both into your next application.
