The organisational structure of a company defines how tasks are formally distributed, coordinated and harmonised. In today's world of constant change and technological advancements it is increasingly important to be flexible. Companies are therefore becoming less centralised and more organic, with cross-hierarchical teams participating in the decision-making process and coordinating work activites.Workers, therefore, have more autonomy, and authority is more evenly distributed, allowing them the freedom to carry out their jobs without supervison. In today's modern decentralised structures, work space is also being redesigned. Colleagues can work together virtually, using the latest technological tools. When they do meet physically, it is in new environments rather than in the traditional office. Often they hot desk rather than have a designated personal office. This new organisational model presents leaders with demanding challenges for the 21st century.