This report delves into the detrimental impacts of corruption on decision-making processes within businesses, using the Canadian context and the SNC Lavalin case as a primary example. It explores how corruption, including bribery and financial fraud, undermines ethical standards, distorts managerial judgment, and complicates monetary decisions. The report highlights the challenges managers face in corrupt environments, such as slow decision-making, difficulty in handling subordinates involved in suspicious activities, and reduced returns on assets. It also examines the cultural shifts that occur within corrupt organizations. Furthermore, the report suggests strategies for combating corruption, including strengthening business ethics, enforcing stringent laws, promoting transparency, and fostering good governance practices to protect the organization's image and ensure long-term success. This report provides valuable insights for students studying business development.