Chairman at APG (Associação Portuguesa de Gestão das Pessoas) and invited lecturer in many universities, bachelor's degrees, master's degrees, post-graduate courses in Human Resource Management and Social and Organizational Psychology. Mário has also been a team coordinator in the Human Resource Management bachelor's degree. He's the author and co-author of various books and essays published in magazines and papers. Has been working as an associate director in the consultancy area, having a large experience as a trainer in companies, organizations and Public Administration.