The structure of the civil service is based on a hierarchical organization. This means that there are different levels of authority and responsibility within the civil service, with each level being responsible to the level above it. The hierarchical structure ensures that there is a clear chain of command, and that decisions are made by those who have the necessary authority and expertise. The most senior officials are responsible for setting policy and strategic direction, while lower-level officials are responsible for implementing policies and carrying out day-to-day tasks. The hierarchical structure also ensures that there is accountability within the civil service, with each level being held responsible for its own performance and the performance of those below it.