The relevance of the research is that scientific analysis and reasoning of proposals regarding improvement of regulation of social security system public management in Kazakhstan under conditions of progressive establishing of socially organized nationhood are being in demand. The purpose of the research is reasoning of major parameters of the national social security system development based on the modern conditions of political, economic and social development of Kazakhstan, the need for conformance to international and regional social standards, experience of making arrangements for population social support in the world. The specific nature and complicacy of the research subject are attributed to the usage of the broad range of general scientific and particular scientific methods of cognition, including analysis, synthesis, comparison, analogy, deduction, induction, abstraction, as well as comparative legal, formal legal, legal simulation method. The paper describes both political and social economic aspects of establishing and developing of the national system of social security based on the principle of complexity. Proposals on improving regulation of the procedure for implementing social measures for population support were framed following the results of the research. The areas of using results: recommendations and conclusions drawn in the paper could be used in the course of defining and implementing the further domestic policy of Kazakhstan in the area of social safety net development; in the law making process with a view to improve the quality of legal regulation of social security relations. The significance is that its findings could be used in a few aspects: law-making, scientific, educational, practical, social ones; the last-mentioned area includes such effects as reduction of social tension in the society, growth in human wellbeing

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