The Inžinier Degree Dissertation deals with the description of harvester technology, its subdivision, and the preparation of the workplace from a technological point of view. The main focus is on machine operators, their qualifications and work experience, which closely relates to performance and the costs of the technology used. The work points out the factors that are most relevant for the machine operation efficiency. The suitability of the use of a heavy forestry type harvester is described from the point of view of its performance, economical operation, and its use in forest stands affected bark beetle damage. The objective of the work was to carry out time scaling of the operation of the Neuson 242 HVT type harvester as well as the Valmet 840.2 forwarder used in the forests of the woodland owners’ co-operative society of Rejdová. It was found that the performance achieved in forest unit 297a was 25.95 m3.Eh-1 where the capacity reached the value of 0.76 m3, and in forest unit 299b it was 23.69 m3.Eh-1 where the capacity reached the value of 0.44 m3. The forwarder performance measurement records showed that in forest unit 297a the performance achieved the value of 14.8m3.h-1 within 5 cycles, in forest unit 305 it was 15.3m3.h-1 where 10 cycles were measured, and in forest unit 299b only one forwarder cycle was measured and the performance was 16 m3.h-1. The measured data are statistically further processed and compared with the results found by other researchers. The prices calculated per 1m3 of timber felled with the use of multi-operation machines applying tractor timber collecting technology are also compared in this work.