Mitsuyasu Nishiwaki FCA FSA EA

Senior International Consulting Actuary, Willis Towers Watson

Contact Information

Willis Towers Watson
800 North Glebe Road
10th Floor
Arlington, VA 22203
Mitsu Nishiwaki is a managing director and senior international consulting actuary in Willis Towers Watson’s Global Services & Solutions practice. Mitsu has over 25 years of experience in the industry, including over twelve years with Willis Towers Watson. Mitsu has a wide variety of experience in the international retirement and benefits area and has worked extensively with retirement programs in North America, Europe and Asia. Mitsu serves as the lead international coordinating actuary for some of the firm’s largest clients including three Fortune 50 companies. Mitsu is the Global Actuarial Leader for the Global Services & Solutions team. In this role, he serves as the chief actuary for the Global Services & Solutions team and oversees the 300+ global coordinated clients managed by the Global Services & Solutions team. Mitsu is one of the firm’s experts on a variety of pension accounting standards, including the ASCs, IFRS, as well as several local GAAP standards. Mitsu received a B.S. in operations research and a B.A. in economics from Cornell University. He is a fellow of the Society of Actuaries and of the Conference of Consulting Actuaries, as well as an enrolled actuary. Mitsu is fluent in English and Japanese.


CCA Member Since 2007

Corporate DB/DC Other Pension Subset Retiree Medical FAS106

U.K. Pension Update and Possible Future Pension Imports From Britain 2019 CCA Annual Meeting (October 30, 2019)

Pension and Benefits Accounting for Foreign Plans 2018 CCA Annual Meeting (October 24, 2018)

Hybrid/Cash Balance Plans in Europe 2018 CCA Annual Meeting (October 22, 2018)

Buyer Beware! Helping Non-US Companies Navigate a Domestic Deal 2017 CCA Annual Meeting (October 23, 2017)

Current Trends Around Executive Pensions Outside of the U.S. 2016 CCA Annual Meeting (October 26, 2016)

Birth, Death and Beyond - Latest UK Derisking Trends 2016 CCA Annual Meeting (October 24, 2016)

Global DB/DC Retirement Governance 2015 CCA Annual Meeting (October 26, 2015)

Cross Border Due Diligence in Mergers and Acquisitions 2014 CCA Annual Meeting (October 22, 2014)

Introduction to Non-U.S. DC Plans 2014 CCA Annual Meeting (October 20, 2014)

Pension Developments in India and China 2013 CCA Annual Meeting (October 21, 2013)

The Sun Has Set in Japan - What's Next? 2012 CCA Annual Meeting (October 24, 2012)

Pension De-risking Strategies- Canada and UK Perspectives 2012 CCA Annual Meeting (October 22, 2012)

An Overview of the German Pension System 2011 CCA Annual Meeting (October 26, 2011)

Wrap-up in Nori: Overview of Pensions in Japan 2009 CCA Annual Meeting (November 02, 2009)


The Conference of Consulting Actuaries (CCA) serves only as a clearinghouse for providing a list of its members and their specific areas of practice. The information appearing with each members name regarding their practice areas was furnished by the member and has not been independently verified in any way by the CCA. Neither the CCA nor its officers, members, or staff make any warranties or representations as to the professional competency of these individuals. Each person who is considering the use of the services of an actuary listed is advised to make an independent judgment regarding their choice of persons whose services they wish to utilize.