Corruption in international business is a problem that has attracted increased interest from academicians. Fighting the great corruption is a challenge to be taken up by governments and institutions. This thesis uses as units of analysis Brazilian multinational companies from the construction industry, investigated in the Federal Police s Lava Jato Operation. The study adopts an integrative theoretical perspective of institutional theory and agency theory. Regarding institutional theory, it was expected that multinationals would react to public exposure to maintain their legitimacy and recover their reputation. From the perspective of agency theory, the literature review pointed out that companies seek to control their agents to avoid the practice of corruption. Thus, this research sought to identify changes in the content of institutional documents relative to preventing and combating the great corruption, before and during the Lava Jato operation, using content analysis. The software Atlas.ti was adopted as a tool for searching terms and quotes in the documents obtained in the firms websites. The time interval analyzed was from 2012 to 2019. There was a significant change in the prevalence of terms after 2014, the year of publication of the Anticorruption Law and the outbreak of Operation Lava Jato.