L.E.K. Consulting: the process and its assessments
The stages, the digital screens, and what varies by office, with dated sources.
Firm processes and online tests change from year to year and differ by office. Use this to prepare, and confirm the exact current steps on the firm's own careers page.
Key takeaways
- Application and screen: Online application; some offices add a test (reported).
- First round: Two or three candidate-led cases with fit questions (reported).
- Final round: More cases plus a written case of about 60 minutes: review a slide pack, build a short deck, and present to a partner and a principal (reported).
This lesson was checked against the sources listed at the end, official pages first. Firm processes change between offices, roles, and years, so use it as a guide and confirm the details in your invitation and with your recruiter.
The interview process, stage by stage
- 1Application and screen: Online application; some offices add a test (reported). What it tests: Numeracy and reasoning.
- 2First round: Two or three candidate-led cases with fit questions (reported). What it tests: Speed and accuracy.
- 3Final round: More cases plus a written case of about 60 minutes: review a slide pack, build a short deck, and present to a partner and a principal (reported). What it tests: Finding the key facts in a lot of data and presenting them clearly.
The assessments it uses and where they sit
- Written case in the final round (reported).
- Online or numerical tests in some offices (reported).
What varies by office, region, and role
- The written case length and format differ by office (reported).
- Whether there is an online test (reported).
Points from public candidate accounts and prep sources
- Reported: cases move fast, so practice working cleanly and checking your math as you go.
This platform builds the underlying skills these screens test and gives realistic practice in similar formats. It never provides or reproduces a firm's actual test, and firms do not allow AI tools, notes, or outside help during their assessments unless they say otherwise in writing.
Last reviewed: 2026-09-28. Sources, official pages first. "Reported" means a secondary source, not the firm or government itself.
- Reported: MyConsultingOffer, L.E.K. written case: https://www.myconsultingoffer.org/case-study-interview-prep/lek-written-case/
- Reported: RoadToOffer, L.E.K. case interview guide: https://www.roadtooffer.com/blog/lek-case-interview-guide
- Reported: Management Consulted, L.E.K. case interview: https://managementconsulted.com/lek-case-interview/
Sources for this lesson (3)
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