The study examines Job related stress and teachers‟ performance in some selected Secondary Schools in Abuja – Nigeria. A survey research method was used for the study. The primary data were generated through the instrument of questionnaire while secondary materials were sourced from past studies. Three research questions, objectives and hypotheses were formulated for the study. The population of the study was 500 employees of the selected secondary school in Abuja, out of which 222 respondents were selected and administered copies of questionnaire. The technique for data analysis was simple percentage statistical. The findings from the analysis revealed that job stress generally negatively affects the performance of employees in the selected secondary schools in Abuja. Three sources of job stress were identified: workload stress, working facilities stress and poor working condition. Findings showed that each of the sources has significant impact on teachers‟ performance. The study therefore, recommended among others, that all teachers in the selected secondary schools in Abuja should be given a commensurable work schedule as this will go a long way to reducing stress on the teaching staff of the selected secondary schools in Abuja and subsequently enhance their performance. In addition, the selected secondary schools in Abuja should provide appropriate work facilities and infrastructure to enable learning and a friendly working environment, which may lead to higher job performance among teachers.