Team Leader,ChileMario

15 years of experience in labor and employment law. 

Other Areas of Practice:

  • Tax
  • Corporate
  • Mergers & Acquisitions

Professional Experience:

  • Partner for ten years at Prieto & CĂ­a. 2003 - Present
  • Associate, Prieto & CĂ­a, 1994 - 2003
  • Attorney, Banco Osorno


  • LLM. University of Pennsylvania Law School, 1993 – 1994
  • Law School at Catholic University of Chile, Santiago Chile, 1986 – 1990
  • Tabancura High School (Santiago, Chile)

Languages: Spanish and English

Professional Memberships:

  • Chilean Bar
  • International Bar Association member
  • IFA member


  • Professor at Law School of Catholic University of Chile


Founded in 1977 in Santiago, our affiliate firm in Chile enjoys an international reputation for providing outstanding service to an impressive list of domestic and international clients. One of the six largest law firms in Chile, the firm prides itself on being a leading full-service, business-focused law firm in the country.

Committed to upholding the highest standards of service, and recruiting only from top rated law schools and other firms, our team in Chile has extensive experience providing advice and representation on a variety of business law issues throughout Chile and is also regarded as a regional leader.

Labor and Employment Practice:

The Chilean team has an established and committed labor and employment practice, covering all legal issues pertaining to labor law, ranging from corporate reorganizations to issues involved in day-to-day operations. Consistently delivering business-minded and innovative solutions, our team in Chile has encouraged clients to establish incentive programs for executives and employees and has provided critical advice on collective bargaining procedures, in due diligence and the organization of human resources, in addition to the acquisition, restructuring or transformation of companies.

The Plus - Business Law Capacity:

The team has over thirty years of experience in all matters relating to business law across a wide range of industries and in all critical practice areas of corporate commercial and transactional practice law.

Key Facts:

  • Location: Santiago
  • Size: 12 Partners, 50 Associates
  • Business Law Practice Areas: Administrative Law; Antitrust Law and Consumer Protection; Arbitration; Bankruptcy, Insolvency and Reorganizations; Commercial Law; Corporate Law; Customs and International Trade and Commerce; Energy and Natural Resources; Environmental Law; Finance; Foreign Investment; Insurance, Reinsurance and Institutional Investors; Intellectual Property; Litigation; M&A, Mining, Real Estate, Construction and Infrastructure; Tax; Telecommunication.
  • Languages: Spanish, English, French.


  • Chambers & Partners: Recognized as a leading firm across a wide range of practice areas including Energy & Natural Resources, M&A, Mining, Projects, IP, Tax, Banking & Finance, Antitrust, Labor, TMT and Dispute Resolution. 
  • 11 partners were recognized by Chambers & Partners as leaders in their areas. 
  • Latin Lawyer: “Respected, modernized and full service structure. The founding partners have excellent reputations in the marketplace, while the younger generation are also prominent names in their own right.