In-work poverty reflects situations of income below the poverty threshold among employed people, involving a deterioration of wellbeing. The International Labour Organization prioritises this situation, which in countries such as Spain, Germany or Italy reaches rates of 11.8%, 10.6% and 11.8%, respectively. Within a context of flexibility, the occupational situation tends to be understood as an individual responsibility, which is why this study analyses the increase in self-criticism in these situations, and the role of social support in this relationship. The mediation of social support in the manifestation of self-criticism among people experiencing in-work poverty is analysed. The participants were 1430 employed people, grouped into those in a situation of poverty and those who are not. The results show that people in a situation of in-work poverty present a higher score in self-criticism and lower in social support. Social support is a mediating variable that prevents the manifestation of self-criticism. Lastly, a gender analysis shows that women experience this relationship more intensely. These findings enable a critical assessment of the activation policies that only take an individual approach. As an alternative, we propose strengthening interventions that foster social support, particularly among women.