Ergonomic forestry issues are extremely complex and multifaceted. The central questions in the ergonomics of forestry machines must also be applied in their development, design and construction processes. As such, it is essential to devote thorough attention to this issue and to carry out detailed analyses of all factors in order to determine the criteria and parameters of the optimal solution of the working conditions to create the relevant standards and regulations. This book is focused on the work of chainsaws and harvester technologies, as well as the suitable choice of work conditions regarding the ergonomic aspects of the whole cutting process by these machines. It deals with technical descriptions and provides an analysis of the technological techniques of the production process. The book also outlines the possibilities of field deployment of such machinery and investigates the workload of harvester and forwarder operators.