The purpose of the study was to establish the best practices through which leaders can influence all members to prevent fraud and corruption in an organization. The survey was descriptive in nature in which 60 managers, currently employed in organizations in Zambia and Lesotho were interviewed. The content qualitative and Microsoft excel pivot tools were used for data analysis. The purposive sampling technique was used to sample out organizations from different industries or sectors in this survey. The majority of the participants’ work stations were located in the countries, Lesotho, 26 (43.3%) and Zambia 26 (43.3%) while a few were posted to work in other countries. 27 (45%), of participants held positions at senior management level, 22 (36.7%) at middle management level and 10 (16.7%) at lower level management. The study found there were high levels of awareness on how leaders can encourage and prevent fraud and corruption. The best practice of leaders in averting fraud and corruption adopted the Five Practices of Exemplary Leadership Model. Practical lessons were drawn from the past experiences of managers, amidst obstacles and challenges, on how to restore a good work culture. It was recommended that managers should: - Encourage and support training of its entire staff in the organization in fraud and corruption risk management to mitigate the effects; identify the indicators that show signs of a good work culture and that fraud and corruption is taking place, monitor and control it; exercise the five practices of exemplary leadership in getting people to commit to preventing internal fraud; and develop psychological hardness in curbing widespread fraud and corruption.