Contax Participacoes is a holding company. Through its subsidiary, TNL Contax S.A., Co. operates in the communications and public relations industry, offering call center operations focusing on customer service, technical support, telemarketing, customer retention, and billing services. Additionally, Co.'s operations are distributed throughout 7 Brazilian states including: Bahia, Pernambuco, Ceara, Rio Grande do Sul, Minas Gerais, Rio de Janeiro, Sao Paulo, and the Federal District. Also, Co. offers its services in partnership with Telemar Norte Leste S.A., serving a portfolio of companies which include: ABN Amro Bank, Grupo Unibanco, Grupo Banco do Brasil, Cemig, NET, Correios, Telemar, Oi, and IG.