Abstract: The subject of this research is the assessment of the skill level of workers in the intellectual professions using integrated assessment technologies, the distinguishing feature of which can be defined as the possibility of aggregating an unlimited number of heterogeneous factors significant for the employer. The main problem is described by the absence of a unified system for assessing the level of qualification with an "exit" to a complex coefficient, used for further normalization of labor and the definition of norms. The urgency of this issue is primarily defined by the problem that has arisen in practice – lack of the possibility of an adequate comparison of the level of complexity of the work performed by the specialists. The authors consider in detail the possibilities of applying modern mathematical tools for the purpose of forming a single coefficient that reflects the level of qualifications of employees. A lot of attention is paid to the issues of system flexibility and the possibilities of its adaptation for the activity of enterprises in various economic spheres. The proposed system is based on modern technology of integrated assessment, based on tree criteria and folding matrices. Advantages of the application of this system can determine the ability to take into account the inorganic number of factors in assessing the level of qualifications, as well as the formation of a single assessment, which allows comparing and ranking the staffing. An undeniable and significant advantage is the addition of the system with the "Active Expertise" tool, which allows the implementation of expert assessments while reducing the degree of manipulation with the result of individual experts. The novelty of the work is determined by the use of the specified tools, technologies and algorithms in the sphere, where previously it was not found. At the same time, the management of the staff of intellectual workers has a separate significance, since it is very problematic to normalize the number of employees in this category. The use of the aggregate assessment integrated into the work-time evaluation systems, in conjunction with the system for assessing the complexity of the work, makes it possible to compare the available volumes with the assessment of the level of labor and the required employment. This material is a logical continuation of methodological developments related to the assessment of the complexity of work and the definition of labor for their implementation. It is noteworthy that for the purposes of correlating the models of assessing the complexity of work and the skills of specialists, similar methods and tools are used, which makes it possible to further emphasize the justification of the technologies used.