Contax Holding 20-F 2010 FY Annual report (foreign)

Table of Contents

Exhibit 13.1

CONTAX PARTICIPAÇÕES S.A. CERTIFICATION 18 U.S.C SECTION 1350, AS ADOPTED PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to section 906 of the Sarbanes-Oxley Act of 2002 (subsections (a) and (b) of section 1350, chapter 63 of Title 18, United States Code), each of the undersigned officers of Contax Participações S.A. (the “Company”), does hereby certify, to such officer’s knowledge, that:

The Annual Report on Form 20-F for the year ended December 31, 2010 of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and information contained in the Form 20-F fairly presents, in all material respects, the financial condition and results of operations of the Company.

Date: June 27, 2011

By:/s/ Michel Neves Sarkis

      Name: Michel Neves Sarkis 

      Title: Chief Executive Officer 

Date: June 27, 2011

By:/s/ Marco Norci Schroeder

      Name: Marco Norci Schroeder

      Title: Chief Financial Officer

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