This study was conducted to determine the relationship of technostress to the work efficacy and performance of teachers in Lumban District. This study aims to identify the level of technostress in terms of techno-overload, techno-complexity, techno-insecurity, techno-invasion, and techno-uncertainty. It also aims to find the level of work efficacy in terms of job commitment, efficiency, and teaching pedagogy. It also aims to find the level of work performance in terms of quality of work, performance rating, and professional development. This study involves the participation of one hundred (100) teachers as respondents selected using random sampling technique. Data were gathered using descriptive statistics such as weighted mean, standard deviation and pearson r. The researcher used a well-planned 55-item checklist questionnaire to determine the effectiveness of the variables. The following are the significant findings of the study: First, the level of technostress in terms of techno- overload, techno-complexity, techno- insecurity, and techno- uncertainty are all very high, while the level of techno-invasion Is high. This can imply that technostress is existing in working environment of the teacher however they can positively handle it. Second, the level of teachers work efficacy in terms of job commitment, work efficiency, and teaching pedagogy are all very high. Next, the level of teachers work performance in terms of quality of work, performance rating, and professional development appears to be very high which can imply that teachers shows a good performance and efficient with their work and are committed with their job. Lastly the results of the study reveal that technostress have a significant relationship on the teachers work efficacy and work performance which implies that it can various technostress can affect their job. Based on the data gathered, the researcher arrived at the following conclusions: There is a significant relationship between technostress and teachers work efficacy. There is a significant relationship between technostress and teachers work performance. Based on the findings of the study the researcher prepared the following recommendation: 1.) The school heads should continue to support their teachers and give them time to learn new things so that they will not be outdated. Do not force them immediately to change instead let them learn and develop with their own. School heads must  provide programs and/or seminar about the modern technology so that all teachers will be able to learn and adapt with the new educational tools that they can use in teaching without even getting stressed. 2.) It is suggested for the teachers to continue their good performance in school and classroom so that they can also foster better outcomes for their students. It is also suggested that they continue their positiveness in terms of dealing with the never-ending educational trend. 3.) Lastly, for the future researchers, it is highly suggested that they include other variables considering other variables not covered in the present study.