L’histoire de Mercer commence aux États-Unis en 1937, au moment de la création du service des avantages sociaux de Marsh & McLennan, Inc. La Société prend le nom de William M. Mercer en 1959, au moment de l’acquisition par Marsh & McLennan de William M. Mercer Limited, entreprise canadienne fondée par William Manson Mercer en 1945. En 1975, Mercer devient une filiale en propriété exclusive de Marsh & McLennan Companies, Inc. En 2002, elle choisit la dénomination sociale Mercer, Consultation en ressources humaines. Puis, en 2007, elle adopte le nom de Mercer. Mercer a connu une importante croissance, tant pour ce qui est de sa taille que des services qu’elle offre, grâce à des efforts de recrutement bien ciblés ainsi qu’à un certain nombre de fusions avec d’autres sociétés de premier plan.


  • 2014Mercer Acquires Denarius

    Mercer has acquired Denarius, a leading compensation and benefits survey and information products consulting firm based in Santiago, Chile.

    Mercer Acquires Firm In Chile

  • Private Market Specialist SCM Acquired

    Mercer announced that, subject to regulatory approvals, it has entered into a definitive agreement to acquire SCM Strategic Capital Management AG (SCM), a Swiss-based specialist private markets advisor and delegated solutions provider.

    Mercer Acquires SCM

  • Acquisition Of Jeitosa Completed

    Mercer completed the acquisition of the business of Workday Services Partner Jeitosa Group International, a leading global HR business consultancy and IT systems integration firm.

    Mercer Acquires Jeitosa

  • Mercer Acquires Stake In Alexander Forbes

    Mercer entered into a definitive agreement to acquire a 34% stake in South Africa-based Alexander Forbes Group Holdings Limited (Alexander Forbes).

    Stake In Alexander Forbes

  • Mercer Acquires Transition Assist

    In March 2014, Mercer reached a definitive agreement to purchase Transition Assist, a retiree exchange specializing in helping retirees in employer-sponsored plans select Medicare supplemental health care insurance. The retiree exchange offers solutions through a licensed call center and professionally-trained benefits counselors. Transition Assist will become part of the full suite of solutions offered by Mercer Marketplace.

    Transition Assist Acquired

  • 2013GRS In South Africa Acquired

    Mercer announced in September 2013 that it had acquired Global Remuneration Solutions (Pty) Ltd. (GRS), a leading compensation and benefits survey data and rewards information provider headquartered in South Africa. GRS conducts compensation and benefits surveys in 36 countries across sub-Saharan Africa and provides a wide range of rewards and mobility products and consulting to many local and international organizations operating in Africa.

    Mercer Acquires GRS

  • Mercer Acquires Pension Wind-Up Business

    Mercer announced in August 2013 a definitive agreement to acquire the pension wind-up business of PwC in Canada. Upon the closing of the transaction, the team of PwC professionals joined Mercer’s own specialists in the pension wind-up business.

    Pension Wind-Up Acquisition

  • Canadian Surveys, Consulting Services Join Mercer

    Mercer announced in February 2013 that it had acquired the salary survey database, client relationships and consulting services of Hall Consulting Limited (HCL), a leading provider of expertise and information services for the mining sector in North America. HCL’s CoopersMining Industry Salary Surveys have been the hallmark of salary survey initiatives dedicated to mining industry for many years.

    Mercer Acquires Canadian firm

  • 2012Mercer Joins Forces With Washington Medicaid Firm

    Mercer announced acquired Alicia Smith & Associates, a nationally-known Medicaid policy consulting firm based in Washington, DC, in January 2012. The transaction strengthened Mercer’s government human services consulting capabilities. In a period of cost and compliance challenges related to Medicaid, state governments are under pressure and seek the advice and expertise that Mercer and the firm of Alicia Smith will bring to the situation.

    Mercer Acquires Medicaid firm

  • 2011Mercer Buys Mahoney & Associates Practices

    Mercer announced in July 2011 that it signed a definitive agreement to acquire Ft. Lauderdale- based Mahoney & Associates’ health and welfare and defined contribution advisory practices. The transaction made Mercer the largest health and benefits broker in the Miami/Ft. Lauderdale Florida brokerage market, the ninth largest market in the US.

    Mercer Buys Florida Firm

  • 2010IPA Acquired By Mercer

    Mercer announced in July 2010 that it had acquired Innovative Process Administration, LLC (IPA), a privately owned, health and benefits administration technology provider. This acquisition played a key role in Mercer’s ongoing commitment to become the benefits administration provider of choice for health and benefit plans of all sizes and market segments.

    IPA Acquired By Merce

  • ORC Worldwide Becomes Part Of Mercer

    Mercer announced in June 2010 that it had agreed to acquire ORC Worldwide, to become an unparalleled provider of global human resource intelligence and further strengthen related international consulting, conference and educational services. ORC’s strong market position and reputation in the United States, particularly in the area of international assignment expertise, complements Mercer’s worldwide research capabilities and extensive global network of offices.

    OCR Worldwide Joins Mercer

  • 2008Mercer And Tesi Merge

    In October 2008, Mercer's operations in Italy merged with Tesi, one of Italy’s premier human capital consulting firms. The combined business, known as Mercer Tesi, significantly added to our presence in Milan and Rome and enhanced our capabilities in advising domestic and international companies on human capital issues.

  • 2007New Brand For Mercer

    In September 2007, Mercer launched a new global brand initiative reflecting expanded business and simplified its name to “Mercer”. The company's new branding builds on its leadership in the HR consulting space while expanding the focus on its outsourcing and investments businesses.

  • Mercer Acquires Höfer Vorsorge-Management

    In December 2007, Mercer acquired Höfer Vorsorge-Management, one of Germany’s leading actuarial and retirement consulting firms. The acquisition gave Mercer the top market position in Germany, extending its employee base and adding offices in Berlin, Karlsruhe, Leipzig, Mülheim and Wiesbaden.