Starting with a bibliographic review and the former experience from different authors, 47 practices of corporate governance and management were identified which could definitely influence on company unity and harmony. Based on a sample taken of Mexican and Colombian companies, an analysis of logistic regression was applied in which it was found that looking for an advice to manage equity, to have continuing education of leaders, to own a family strategy and to organize shareholders´ meetings are the most influential practices to get a perception of unity and harmony in family- owned companies.
