This paper aims to examine the informal mechanisms and factors of corporate crime in Brazil that contribute to the persistence of political corruption. For this analysis, official records, e.g. closed criminal trials produced by Operation Carwash, one of the biggest cases of white-collar crime and political corruption in Brazil's history, will be used. The focus of the analysis is on the criminal trials, generated in the early phases of the investigation, which revealed the illegal activities of large Brazilian construction companies as well as its cartel-building to defraud the Petrobras' contracts. The analysis on the modus operandi of this cartel served to reconstruct the unwritten rules inside organizations that are involved in the bribery-scheme. The analysis showed that Brazilian private enterprises, represented by its senior executives and top managers, used the lack of regulation and informal rules, rooted in the political system, to achieve illegal profits.

本文旨在研究导致公司政治腐败持续存在的巴西公司犯罪的非正式机制和因素。为了进行分析，将使用官方记录，例如“洗车行动”（Operation Carwash）进行的封闭式刑事审判，这是巴西历史上最大的白领犯罪和政治腐败案件之一。分析的重点是在调查的早期阶段进行的刑事审判，该审判揭示了巴西大型建筑公司的非法活动以及其卡特尔建筑公司的欺诈行为，以欺诈巴西石油公司的合同。对这个卡特尔的作案手法进行分析有助于重建参与贿赂计划的组织内部的不成文规则。分析表明，巴西的私营企业，