The utilization of autonomous assistive robots in an office setting is beneficial as they facilitate efficiency, convenience, and a heightened degree of automation regarding routine tasks. By employing such robots, employees are able to direct their attention toward more creative and strategic endeavors, while the robot assumes responsibility for tasks that are repetitive or time-consuming. Furthermore, the integration of advanced technologies, including voice recognition, autonomous navigation, and the Internet of Things (IoT), endows the Pepper robot with remarkable adaptability in diverse office environments. The reliability block diagram analysis demonstrated that the overall reliability of the Pepper system is contingent upon the performance of its core components, including the motor and sensors. In order to calculate the reliability of the whole system, MTBF and average uptime of each component were analyzed. The analysis identified the motor as the most critical component, exhibiting a higher failure rate in comparison to other components. Consequently, enhancing motor durability and implementing routine maintenance programmers could markedly enhance the operational reliability of the Pepper in an office environment.