Ms Siaska SSS Lorenzo > Arias > Panama, Panama > Lawyer Profile

The Towers, Piso 3

Work Department


Managing Partner


Siaska has broad experience in Labor Law, Data Privacy, Competition and Compliance, Telecommunications, Energy and Infrastructure, Concessions, Public Bids and Privatizations, as well as Administrative Law; she has experience in Anticorruption and Corporate matters advising local and multinational companies.

She was Partner for 21 years in a renowned firm in Panama and was in charge of supervising all the governmental procedures and negotiation formalities, collections inside the Litigation department and exercised as adviser of foreign investors in the main processes of privatization in the areas of energy, water, sugar, cements, among others.

 In Telecommunications, she directed the group in charge of drafting the General Law of Telecommunications of Panama and its Regulation Decree in 1995, still binding.

From 2005 to 2009 she was the first female Editor-in-Chief for the national newspaper La Prensa, the one with the largest impact on the Panamanian national and political agenda. After her career in the newspaper, she went back to private practice, opening the Arias Panama office in 2011. She has been the Managing Partner since 2016.


  • Spanish
  • English 
  • Portuguese


  • International Bar Association (IBA)

  • Panamanian Bar Association


  • Bachelors Degree in Law and Political Science (summa cum laude) from Universidad Santa Maria La Antigua (USMA) of Panama, First Honor place.

  • Masters Degree from Harvard University (LL.M)

  • Neutral Arbitrator for the International Centre for Dispute Resolution of the American Arbitration Association (AAA-ICDR), Miami-Florida, USA.

  • Certified Arbitrator for NAM (National Arbitration & Mediation), New York, USA.

  • Certified Arbitrator for the Panamanian Chamber of Commerce.

  • Certified Public Translator English/Spanish.

Lawyer Rankings

Panama > Labour

Arias has a regional presence, making it a strong choice to advise multinational companies, with a diverse client base including high-profile names in the pharmaceutical and media sectors. The team regularly assists with day-to-day labour, immigration and social security matters, as well as joining up with the active corporate department and the firm’s Central American offices to provide support with the labour aspects of multi-jurisdictional M&A. Its recent workload also includes handling sensitive investigations involving fraud and sexual harassment allegations. ‘Very responsive‘ Panama managing partner Siaska SSS Lorenzo heads the practice, bringing extensive regulatory and compliance expertise to the table.