The digital transformation (DT) process, which has been experienced intensely recently, can radically change all business processes, models and structures of organizations. Change and transformation, which are focused on efficiency and productivity, also trigger stress from time to time. Public institutions are also adopting DT processes. In this study, the relationship between technostress faced by organization employees in the DT process and employee performance is examined. The mixed method is used in the study. As a sample, 351 central career experts working in primary units of public institutions are selected, and the data are analysed using IBM SPSS 25 and MAXQDA 20 software. As a result of the study, it is seen that the perspective on DT affects employee performance and technostress in a positive way, and that employees' technostress levels negatively affect employee performance. Besides, according to the findings of the qualitative research method, the concepts of hardware and software, technological infrastructure, the attitude of senior management, resistance to transformation, education and ability to use technology, workload, complexity and uncertainty, speed, satisfaction, motivation, continuity, quality and work-life imbalance are listed as influential factors. Implications for Central European audience: The findings reveal that by focusing on DT, technostress can be reduced, and thus employee performance can be increased. Employees can improve their DT skills, which will also positively affect their performance. It has also been stated that in 2021, Turkey would rank 16th in the European Union digital agenda e-government title and has digital government services similar to Central European countries. It shows that the positive and negative aspects of DT can be similar for employees.