This research is supported by the Novaterra Trust, a social Trust which aims to reintegrate populations at risk in society through education for work at different stages: providing training in a specific occupation; supporting the person through guidance services while searching for a job; facilitating a contract in a company of the Trust in order to fulfill the educational process and to assure a successful integration into society; and performing evaluation and research on all of its processes. The context of our research takes place in the companies owned by that Trust; which have as their most important aim to facilitate re-entry into the labour market of vulnerable populations (exiting from drug addictions, from prison, or suffering other forms of stigmatization like immigration or AIDS). Despite the lack of clear regulation, such companies exist in Spain and they use to employ a few workers which have as one of their duties to 'accompany' those other under reintegration processes.We will provide examples and reflections on what are the training and learning principles behind the relations established in these companies, and which usually rely on different forms of work-based training and learning.Our focus is, therefore, on the educational processes which take place in the companies, not in ordinary companies but in those which have an educational or which search an educational and social profit even before the economic profit.The expansion of such companies in Spain is only recent, yet they are organizing themselves and demanding a regulation which recognizes their social role. The theoretical framework underlying these educational processes are those of work- based training and learning, experiental learning, situated learning as well as supervision theories. Citizenship education also plays an important role, related to the process of becoming an employee and reconstructing one's identity in order to overcome stigmatization and to get rid of a record of social failure.We will focus on the role of the worker in charge and how she perceives the process of social and work integration, the assessment of each of the employee's needs and performance and the educational behaviour she carries out at work.Case studies from two different companies will be used to illustrate our reflections: a gardening company as well as a courier company. We will analyse what it implies to develop the role of 'accompanying worker'; we will describe its professional, educational and labour profile; we will give an account of the difficulties they have to face and the rewards they find in their duties. We will provide the features and roles they have to accomplish.The etnography will be our methodological option.Our research provides insight into the educational and social role of certain companies which may well find their place in a knowledge economy.