📍
Tokyo, Japan

Oliver Wyman - Summer Intern (2026) - Tokyo

Internship
Professional Services
Consulting
Posted:
December 29, 2025

Marsh McLennan

Global risk, strategy and people consultancy
73.8
Palpable Score
Apply >view company >

What You Will Do

As a new joiner at Oliver Wyman, you will have the opportunity to work on interesting problems for large clients worldwide, developing your expertise quickly and making an immediate impact. You'll work alongside senior colleagues and clients, working as one to help to solve complex problems and drive meaningful change.

We believe in providing our consultants with the freedom and support they need to succeed in their own way. We provide an apprenticeship model for learning on the job, supplemented by formal training to help you rapidly develop your communication, presentation, and client management skills.

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Why Join Us

Come aboard if you enjoy solving interesting problems and at ease working across different cultures. You will step out of your comfort zone, finding stretch opportunities along every step of the journey. You will also find genuine colleagues who speak their minds and measure success not by the number of hours worked but by what gets accomplished.  ​

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Immediate impact, continuous challenge

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Chart your course; we support the journey

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We hire you to be you

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Who Can Apply

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How To Apply

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Please combine below required documents into 1 PDF and submit:

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*Your application will be automatically turned down if the document doesn’t meet the requirements.

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Please submit your application to only ONE role/office within Asia-Pacific and refrain from submitting any duplicate applications.

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About the company

Marsh McLennan

Company overview
Marsh McLennan is a professional services group focused on risk, strategy, and people. The company operates through four global businesses: Marsh (insurance broking and risk advisory), Guy Carpenter (reinsurance), Mercer (people consulting and benefits), and Oliver Wyman (management consulting). Marsh McLennan serves large and mid-sized organisations across industries, plus public-sector clients, helping with insurance placement, risk analytics, workforce and retirement solutions, and strategy projects. In the latest annual reporting, Marsh McLennan describes more than 90,000 colleagues advising clients across more than 130 countries.

Locations and presence

Marsh McLennan operates globally with major hubs including New York and London, plus large regional offices across North America, Europe, and Asia-Pacific. Hybrid expectations vary by team, but multiple early-career postings spell out an expectation of being in the local office or on-site with clients at least three days per week, with at least one shared in-office anchor day.

Palpable Score

73.8
/ 100
Marsh McLennan is a strong early-career option because the company offers several entry routes across the group, from Marsh graduate programmes to Guy Carpenter risk analyst tracks and Oliver Wyman internships. The biggest strengths are breadth of roles and structured learning language in multiple programmes, paired with stable benefits. The main limits are uneven public signals on candidate experience and outcomes, because Marsh McLennan does not publish conversion rates, retention, or time-to-promotion data for early-career cohorts.
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