Oab Executive and Leadership Team

October, 2026

Leadership Overview

Oab has 5 executives leading key functions including condominium law regulation, national organizational strategy, compliance and ESG standards, commission oversight, and environmental legal advocacy.

Committed to the defense of the Federal Constitution, Oab maintains rigorous ethical standards and promotes legal education across the entire Brazilian legal landscape.

Leadership Roles at Oab

  • President, The Compliance & Esg Committee of The Brazilian Bar Association - Roberta Carlini
  • President, Environmental Law Commission, Rio Grande Do Sul Chapter - Alessandra Lehmen
  • Presidente Da Comissão De Direito Condominial OAB Conselho Federal 25 and 28 - Rodrigo Karpat
  • Presidente Nacional - Roberto Busato
  • Presidente De Comissão - Stela Velter
  • Roberta Carlini - President, The Compliance & Esg Committee of The Brazilian Bar Association

    Roberta Carlini, the President, The Compliance & Esg Committee of The Brazilian Bar Association at Oab, directs the integration of environmental, social, and governance standards within the legal profession. Carlini architects frameworks that encourage law firms to adopt sustainable practices and ethical compliance protocols. By overseeing the committee, the President, The Compliance & Esg Committee of The Brazilian Bar Association ensures that legal professionals align with modern global standards of corporate responsibility. This leadership role involves developing educational resources that assist lawyers in navigating complex ESG regulations. Roberta Carlini drives the adoption of these critical standards, enhancing the reputation and operational quality of the legal community. Through strategic partnerships with industry stakeholders, the President, The Compliance & Esg Committee of The Brazilian Bar Association strengthens the commitment of the organization to ethical excellence and long-term professional sustainability.

    Alessandra Lehmen - President, Environmental Law Commission, Rio Grande Do Sul Chapter

    Alessandra Lehmen, the President, Environmental Law Commission, Rio Grande Do Sul Chapter at Oab, directs regional advocacy and regulatory oversight regarding environmental legislation. Lehmen architects legal strategies that address ecological challenges and promote sustainable development within the southern region of Brazil. By leading the commission, the President, Environmental Law Commission, Rio Grande Do Sul Chapter ensures that local legal professionals remain informed about critical environmental statutes and policy shifts. This leadership role involves engaging with regional stakeholders to provide expert guidance on complex environmental litigation and compliance matters. Alessandra Lehmen drives the expansion of environmental legal knowledge, supporting the broader mission of the organization to defend the constitution. Through the coordination of regional initiatives, the President, Environmental Law Commission, Rio Grande Do Sul Chapter strengthens the impact of the legal profession on environmental protection and public policy.
    Alessandra Lehmen

    Rodrigo Karpat - Presidente Da Comissão De Direito Condominial OAB Conselho Federal 25 and 28

    Rodrigo Karpat, the Presidente Da Comissão De Direito Condominial OAB Conselho Federal 25 and 28 at Oab, directs the regulatory framework governing condominium law across the nation. Karpat architects specialized guidelines that standardize legal practices for property management and residential disputes. By collaborating with the Federal Council, the Presidente Da Comissão De Direito Condominial OAB Conselho Federal 25 and 28 ensures that legal professionals receive updated training on evolving property statutes. This leadership role involves analyzing complex legislative changes to protect the rights of property owners and legal practitioners alike. Rodrigo Karpat drives the implementation of ethical standards within the condominium sector, fostering transparency and professional accountability. Through consistent engagement with regional chapters, the Presidente Da Comissão De Direito Condominial OAB Conselho Federal 25 and 28 strengthens the overall integrity of the legal profession in Brazil.

    Roberto Busato - Presidente Nacional

    Roberto Busato, the Presidente Nacional at Oab, executes the overarching strategic vision for the regulatory body representing the legal profession in Brazil. Busato manages the national registry and oversees the provision of digital certification services to ensure operational efficiency for lawyers nationwide. By coordinating with regional leadership, the Presidente Nacional maintains the defense of the Federal Constitution and upholds the rule of law. This position requires constant interaction with the Board to address systemic challenges facing legal practitioners and students. Roberto Busato drives initiatives that promote legal education and professional development, ensuring that the organization remains a pillar of justice. Through the management of national legal publications and advocacy efforts, the Presidente Nacional secures the professional interests of the entire membership base while fostering public trust in the legal system.

    Stela Velter - Presidente De Comissão

    Stela Velter, the Presidente De Comissão at Oab, directs the specialized activities and administrative functions of the assigned commission to support the broader mission of the organization. Velter architects operational workflows that facilitate legal research and professional networking among members. By managing the commission, the Presidente De Comissão ensures that specific legal topics receive the necessary attention and resources to benefit law students and practitioners. This leadership role involves coordinating with other committee heads to align commission outputs with the strategic goals of the national body. Stela Velter drives the development of high-quality legal content and educational initiatives that elevate the standard of practice. Through the effective administration of commission resources, the Presidente De Comissão fosters a collaborative environment that addresses the evolving needs of the legal community and promotes professional growth across the country.

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    Frequently Asked Questions Regarding Oab Top Executives and Leadership Team

    Who leads Oab?
    Oab is led by Roberta Carlini (President, The Compliance & Esg Committee of The Brazilian Bar Association), along with executives such as Alessandra Lehmen (President, Environmental Law Commission, Rio Grande Do Sul Chapter) and Rodrigo Karpat (Presidente Da Comissão De Direito Condominial OAB Conselho Federal 25 and 28).
    Who is part of Oab’s executive team?
    The executive team of Oab includes leaders such as Roberta Carlini (President, The Compliance & Esg Committee of The Brazilian Bar Association), Alessandra Lehmen (President, Environmental Law Commission, Rio Grande Do Sul Chapter), Rodrigo Karpat (Presidente Da Comissão De Direito Condominial OAB Conselho Federal 25 and 28) and other senior executives.
    How many executives does Oab have?
    Oab has 5 executives leading key business areas.
    What roles are included in Oab’s leadership team?
    The leadership team of Oab includes roles such as President, The Compliance & Esg Committee of The Brazilian Bar Association, President, Environmental Law Commission, Rio Grande Do Sul Chapter, Presidente Da Comissão De Direito Condominial OAB Conselho Federal 25 and 28, Presidente Nacional, Presidente De Comissão.