ENAn economic downfall, which started at the end of year 2008, had dramatic impact on increase of youth population from 15-24 aged group Not in Employment, Education or Training (NEET) in EU Member States. An identification of success factors driving positive changes in NEETs population by implementing Youth Guarantee (YG) initiatives in EU countries is the scientific problem analysed in this publication. The main purpose of investigation is identification of groups of EU countries according level of youth unemployment and the impact made by implementing the YG initiatives. The cluster analysis techniques is used and three groups of EU Member States revealded according both groups of indicators: a) the share of NEETs at start position of YG implementation and in year 2017; b) the share of NEETs attended YG and positive outcome in 6 month after compleating participation in this programme. Results of investigation show most progress reached those countries that have successfully developed public-private partnerships in process of implementation of YG programme.