In this study, it was aimed to examine the effect of technostress on teachers' teaching motivation and happiness levels. The study was carried out in a province located in the Western Black Sea Region in the 2021-2022 academic year. 389 teachers participated in the research. Three scales were used to collect the data: "Determination of Technostress Levels", "Teaching Motivation Scale" and "Oxford Happiness Scale". The relationship between technostress, teachers' motivation to teach and their happiness levels, and the differences between the variables of gender, professional seniority, school type and technology use disposition were revealed. As a result of the research, teachers' Technostress and Intrinsic-External Motivation levels were found to be "moderate". Happiness levels were found to be "Advanced". It was concluded that female teachers had higher intrinsic and extrinsic motivations than male teachers. Teachers with less than one year of professional seniority have higher technostress levels than teachers with higher professional seniority. It has been observed that the technostress levels of the teachers whose technology use is at "Medium" level are higher than the teachers with "High" level. It was concluded that there is a negative “Low” level relationship between technostress and happiness variable. As a result of the research, it was seen that Technostress has a predictive effect on teachers' happiness levels.