Mariana Costa

mariblack3Practice Areas

International Employment Law

Global Human Resources

Cross-border Transference of Workforce

Global Mobility and Expatriates

Multinational companies expanding business globally need to ensure observance of domestic and international labor and employment Law.  Mariana has more than 10 years of experience working with international employment law and global mobility while assisting companies in developing compliant and effective global business plans to address offshore employment matters.

Mariana provides strategic advice and counseling to clients on all challenges related to the cross-border transference of workforce and the hiring and handling of employees overseas.  She assists companies in how to implement their expatriation processes, structure transferences of employees globally, prepare international assignment policies, draft international employment contracts and administer overseas tax and payroll matters.

Mariana has helped Fortune 500 companies to develop their compensation and international assignment fringe benefits packages while assuring that the foreign employment packages and agreements were competitive and compliant with labor and employment law, tax law, immigration law, social security law; both domestically and internationally.

Prior to joining Littler Mendelson, Mariana worked in the International Employment practice of “Big Four” accounting firms and served as a law clerk on the Brazilian Judicial Courts.


  • Specialization in Human Resources Management, University of Central Florida, 2009
  • Specialization in Global Human Resources Management, Duke University, 2009
  • Master of Laws in International Law and Human Rights (LL.M.), Northwestern University School of Law, with honors, (Chicago), 2008
  • Post Graduate, International Law. Fundação Getúlio Vargas, (São Paulo, Brazil), 2007
  • Bachelor of Laws (LL.B.),Pontifícia Universidade Católica (PUC-SP), (São Paulo, Brazil), 1999

Lectures & Presentations

Mariana has lectured at various courses and seminars internationally (Brazil, U.S.A, Argentina and Chile) on a wide range of topics related to global mobility such as:  international law, international employment and labor law, international treaties, exchange rules, immigration, stock options plans, conflicts of law and comparative law.


  • Global Professional in Human Resources (GPHR) from the HR Certification Institute (HRCI)
  • Brazilian State Bar (Brazil)
  • Florida Foreign License Consultant
  • Member of the International Bar Association – Human Rights and International Law Sections
  • Member of the Employee Compensation and Benefits Group of the Ius Laboris Alliance
  • Member of the Brazilian-American Chamber of Commerce of Florida
  • Member of the Hispanic National Bar Association

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