The article substantiates the expediency of applying a functional competent approach to social work specialists training, which combines the requirements both with the content of this training and the ability of the future social worker to apply the acquired knowledge, skills and abilities in the direct execution of professional functions. The correlation of professional functions and competencies (general and special ones) of Masters in social work, determined by the Standard of higher education in specialty 231 «Social work» for the second (Master’s) level of higher education is determined. The possibility of forming separate competencies in the process of studying the discipline «Professional reliability of personnel of the socionomic sphere», provided by the Master’s training of future social workers at the Odessa National Polytechnic University, is analyzed, namely: the ability to think abstractly, analyze and synthesize; ability to conduct research at the appropriate level; the ability to generate new ideas (creativity); ability to understand and use modern theories, methodologies and methods of social and other sciences, including methods of mathematical statistics and quantitative sociological methods, in relation to the tasks of fundamental and applied research in the field of social work; ability to implement methods and technologies of innovative practice and management in the social work system; ability to evaluate the process and result of professional activity and quality of social services; ability for joint activity and group motivation, facilitation of group decision-making processes; ability to bring knowledge and own conclusions to specialists and nonspecialists; ability to effectively manage the organization in the field of social work. The tasks for the competency assessment of the learning outcomes (solve complex problems and problems that require updating and integration of knowledge in the context of incomplete / insufficient information and conflicting requirements; to show indepth knowledge and systematic understanding of theoretical concepts, both in the field of social work and in other branches of socio-humanities; collect and perform quantitative and qualitative analysis of empirical data; independently and autonomously to find information necessary for professional growth, to acquire it, to acquire and produce new knowledge, to develop professional skills and qualities; implement reflective practices in the context of the values of social work, responsibility, including to prevent professional burnout; to organize joint activity of specialists of different industries and non-professionals, to carry out their preparation for social work tasks, to initiate team-building and to coordinate team work; to develop criteria and indicators of the effectiveness of professional activity, to apply them in evaluating the work performed, to offer recommendations for quality assurance of social services and management decisions) within the study of the specified discipline are proposed.