For every workplace, it is important to identify the hazards, harm and effort to which the worker is exposed and to carry out an appropriate risk assessment. One of the major risks in the work of an electrician in electricity distribution is working at a height of more than 3 m. The work of an electrician at height is carried out with personal protective equipment and, if possible, with additional equipment such as a bucket lorry (articulated telescopic platform). Due to the increasing importance of health and safety in the workplace, workload analysis methods have been developed to identify unfavourable working postures. Working postures affect the comfort and productivity of the work. In this study, a posture assessment is carried out using the ergonomic Rapid Entire Body Assessment (REBA) method for the work of electricians at height. In the first case studied, the electrician does not use a bucket lorry for work at height, while in the second case, a bucket lorry is used. The field measurements and the data acquisition of the working postures during the execution of the electrician’s work task at height were carried out using a drone with a video camera. The recorded postures were analysed with the software package ErgoFellow 3.0 using the REBA tool. The REBA values obtained show that the work of an electrician at height without using a bucket lorry is significantly more demanding and risky.