In this paper, we stud y team cohesion and leadership style of staff and managers working in a retirement home . We used two well - known questionnaires, the Group Environment Questionnaire (GEQ) and the Multifactor Leadership Questionnaire (MLQ), which we translated in French and validated. The GEQ and the MLQ were submitted respectively to the employees and the team leaders of the retirement home. Findings show that there is a significant link between a combin ed transformational - transactional leadership style and task cohesion in a team. On the other hand, there is no correlation between the leadership style and the team social cohesion. This suggests that appropriate leaders can help improving cohesion between members of the team in performing their tasks but are not sufficient to strengthen the friendly ties within the team.