Available literature describes various concepts of maintenance, from those focused on the reliability- RCM, through Lean Management oriented towards productivity: TPM. Each system of maintenance including underground mining machinery requires human beings who apply them to perform specific tasks. Thus, the scale and extent of participation of the human factor in the different approaches to the maintenance of underground machinery is different. Therefore, the scope of education and the skills and the necessary knowledge and expected competence e.g. maintenance services become a universal model. In some part they become a specific competence model differing significantly from the others, for example a TPM. That may happen due to the character of maintenance strategy adopted by the mining company managers based on a TPM which in a specific and complex way covers the process of maintenance. Differences will also reveal in a TPM in the way how the tasks of the maintenance department are conducted, inter alia, different training sessions (e.g. work safety, a workplace or a device - specific training) in addition to those necessary and universal which are mandatory for the regime of the working environment such as found in the mine. The training system for the occupational safety and ergonomics in modern maintenance concepts translates ultimately to the effectiveness of these systems, that is the competitiveness of the group and the level and condition of specific professional skills of maintenance workers taking indirect or direct participation in the maintenance system.