Workplace conflict is a specific type of conflict that occurs in workplaces. The conflicts that arise in workplaces may be shaped by the unique aspects of this environment, including the long hours people spend at their workplace, the hierarchical structure of the organization, and the difficulties (e.g. financial consequences) that may be involved in switching to a different workplace. In this respect, workplaces share much in common with schools, especially pre college educational institutions in which students were less autonomous. The study sought to examinethe effects of workplace conflicts on performance of teachers. The main objective of the studywas to establish the effects of the workplace conflict on performance of teachers in public secondary schools. The factors under investigation were work relationship conflicts, task conflicts,structural conflicts and the goal conflicts and how they influence the performance of teachers.A review of literature was conducted so as to find out what other researchers had found out on studiesrelated to the topic. The researcher filled the gap by seeking the views of teachers in Nyeri Central District on the effects of workplace conflict on their performance. The study targeted a population of 292 respondents who are principals and teachers in the 17 public secondary schools. Due to the large number of the respondents, the researcher used the proportionatestratified random sampling whereby according to Mugenda and Mugenda (2005), 30% of the target population will be an ideal sample. This translated to 82 teachers who the researcherthen collected data from using questionnaires.