NEET is an umbrella term for those who struggle with their school-to-work transition. It is a consensus today that NEET is an acutely heterogeneous group, and there are varying ways to classify its members. Some of them deliberately reject or postpone the school-to-work transition, for example, because they choose to fulfill their traditional gender role. In this article, the NEET classification was based on the individuals’ well-being. Moldova suffers from simultaneous socio-economic crises, including high emigration and poverty rates. A standardized survey taken in Moldova thus would allow for greater flexibility when classifying NEET youth. The data were taken from the Gender and Generation Survey (GGS) conducted in 2020. The previous studies use different definitions of NEET; for this research, the 15 – 29 age group was chosen (298 observations comply with the NEET conditions and are complete). To conduct the classification, the author chose the questions on life satisfaction, happiness, and two depression sentiments. The variables are categorical and were analyzed with a Latent Class Analysis. There are substantial correspondences between the NEET well-being classes and the causes of NEET, as well as the SWB determinants. The results supplement the current knowledge on NEET heterogeneity from the side of self-assigned well-being rather than socio-economic inequalities.