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Marsh & Mclennan Consultant Interview Questions

The questions to prepare for a Marsh & Mclennan Consultant interview. Questions from real interview reports rank first. Updated weekly.

50questions
~7htotal time
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1
ExecutionStart here. 5 questions · ~40 min
Change Management for a MergerHard

Tests change management planning, stakeholder alignment, and execution for complex transformations.

Stakeholder ManagementChange ManagementRoadmappingMarsh & Mclennan
Board Presentation for Executive PayMedium

Tests executive communication, logic structuring, and persuasion for compensation strategy decisions.

Stakeholder ManagementpresentationMarsh & Mclennan
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2
Strategy5 questions · ~40 min
Market Sizing for Corporate WellnessHard

Tests structured market sizing and assumptions for a consulting growth or product opportunity.

EstimationTAM/SAM/SOMMarket SizingMarsh & Mclennan
Insured vs Self-Insured Health PlansHard

Tests benefits strategy, risk tradeoffs, and decision support for health plan selection.

Strategic PlanningCost-Benefit AnalysisBusiness AcumenMarsh & Mclennan
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3
Finance & Accounting3 questions · ~24 min
Compa Ratios and Job EvaluationMedium

Assesses practical knowledge of compensation frameworks used in HR consulting work.

compensationMarsh & Mclennan
Market Outlook for InvestmentsMedium

Evaluates investment thinking and ability to connect market outlook to client guidance.

market analysisMarsh & Mclennan
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4
Behavioral & Leadership34 questions · ~272 min
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5
More topics3 questions · ~24 min
Employee Turnover and Rewards StrategyHard

Tests analytical problem solving and design of employee benefits and rewards solutions for client retention.

User NeedsRetentionValue PropositionMarsh & Mclennan
Workday Integration ExperienceHard

Assesses integration engineering skills across Workday capabilities and secure data flows.

technical skillsintegrationMarsh & Mclennan
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Hands-on SQL practiceWrite and run real queries in the editor. 3 drills · ~30 min
Top Users by Recent Transaction VolumeMedium
Practice
Practice drill

Find the top 3 users by completed transaction volume in the last 30 days using joins and aggregation.

Data Analysisquery optimizationsqlTTier 1 BankRevolutChime
Monthly Retention Cohort AnalysisHard
Practice
Practice drill

Build monthly signup cohorts with CTEs and joins to calculate month 0-2 retention for a self-serve product.

Data Analysisuser retentionCohort AnalysisRed VenturesBILLOpenAI
Flag Suspicious Driver Signup ClustersHard
Practice
Practice drill

Use CTEs, joins, aggregations, and CASE logic to flag Lyft driver accounts with suspicious early activity patterns.

fraud detectionData AnalysisRisk ManagementLyft
The finish line: interview-readyComplete all 50 questions plus 3 hands-on drills to finish this plan.