This study investigates strategies used by principals for enhancing the productivity of secondary school teachers in selected government secondary schools in Cameroon. Four major strategies were examined. These include motivation, conflict resolution, supervisory and communication strategies and the extent to which they influence teachers' productivity. Four research questions and hypotheses guided the study. Questionnaire was used to collect data from 350 teachers selected from a population of 1400 teachers in government secondary schools in Fako Division of the South West Region of Cameroon. The multi-stage sampling technique was used to select teachers for the study. Results showed that, principals' communication, conflict management, supervisory and motivation strategies influence the productivity of teachers in Government Secondary Schools. Of the four strategies examined, conflict management strategy was found to have more influence on the productivity of teachers. Principals' strategies have a direct relationship with teachers' productivity. Therefore, there is a possible correlation between principals' leadership and management strategies, teachers' productivity and school effectiveness. In addition, effective collaboration amongst teachers is necessary for teachers' effectiveness. It is recommended that principals should put in strategies that will enhance effective communication, conflict management, motivation and supervision to improve on the productivity of teachers.