L’entrepreneuriat en équipe constitue une réalité, diversement mesurée, de la conduite des entreprises. La recherche s’est intéressée à cette dimension du phénomène entrepreneurial. Dans ce travail, nous nous appuyons sur l’attente de l’individu entrepreneur afin de qualifier l’effectivité de l’équipe au sens de la satisfaction de ses membres, dans une perspective de pérennisation de l’acte entrepreneurial. Le secteur de l’agriculture offre un terrain qui intéresse la recherche. Le renouvellement des chefs d’entreprises, l’évolution du métier, l’agrandissement des structures productives, plaident pour un développement de formes sociétaires impliquant plusieurs exploitants propriétaires. La psychologie comportementale et la socio-psychologie nous aident à percevoir les attentes de l’entrepreneur dans le cadre d’un entrepreneuriat à plusieurs. L’installation dans un cadre d’équipe entrepreneuriale est largement mise en avant lors d’une étude par les modèles d’intention, auprès d’étudiants. Nous interrogeons, par la suite, des agriculteurs sur leur vécu, au regard de leurs aspirations initiales. Les analyses des organisations professionnelles portent ces sujets et viennent conforter notre problématique. Nous proposons un éclairage nouveau sur l’équipe entrepreneuriale et des pistes de réflexion pour l’accompagnement dans ce contexte. / Team entrepreneurship is a reality for many businesses. Research works aim to study this side of management phenomenon. For this contribution we examine the individual expectation for self-employment and describe the effectiveness of the team, in the sense of satisfaction of the members, as an element for the survival of the business. The farm sector gives the opportunity for our discipline to examine this form of entrepreneurship. Farms succession, the size of the enterprises, justifies the development of multi owner organisations. Behavioural psychology and social psychology, help us to analyse the entrepreneur believes. Entrepreneurial initiative in a team context is widely mentioned by students, in a study based on entrepreneurial intention models. Then we ask farmers about the reality of their situation in regards of initial expectations. We challenge the professional organisations analysis to confirm our research.We offer to have a new approach of team entrepreneurship, helping entrepreneurs and consultants toward durability of the project. (JEL: L26, D23, D91, Q12)

New ventures are rather often founded by more than one person. Still, we do not know much about how these venture teams are formed, develop and finally dissolve. The manner in which the venture team roles develop when there is more than one owner is also a neglected area in the entrepreneurship research. It is argued in this thesis that the most prolific way of studying the venture team process and the venture team roles process is in relation to the innovation process. The over-all aim of this thesis is to explore what kinds of theoretical, conceptual, empirical and methodological insights are achieved by studying innovation processes in new ventures in a transformative institutional context, from the team-level of analysis. The empirical materials are a pilot-case (Tetra Pak) and an in-depth extended case-study from the publishing sector in Poland (Proszynski i S-ka, from 1985 to 2003). The method used in the thesis is a retrospective process approach with a phasic analysis of the polyphonical narratives of the experiences of key persons as well as data from archives. In the final analysis, a number of propositions are presented that relate to how the venture team process and the venture team roles process develop over extended time periods and in relation to the innovation process. The conclusions are that the team as a level of analysis helps us to theoretically understand and explain phenomena such as periods of divergence in the innovation process; the process of social commitments in the venture team; and how a venture team develops over time to a balanced and experienced expert leadership team. Methodologically, it is claimed that the polyphonical data collection gives more comprehensive, valid and reliable measurements of the innovation process. Finally, this thesis contributes with a story of the transformation of the Polish society and economy described in an unusual way via employing the team as a level of analysis.