In this study, we aim to explore notions such as team-work and collaboration among teachers, drawing conclusions from Nordic countries. Emphasis is placed on how lack of collaboration can cause work-related stress and whether collaboration, proper induction for new teachers and mentoring are effective methods that can improve working experience for teachers. Not enough research has been conducted on how Greek teachers collaborate and whether they are open to team-building activities and revolutionary for Greek standards notions such as mentoring and peer-teaching. Therefore, after the literature review, the second part of this study describes the situation in Greek schools. The Greek educational system is studied so that conclusions can be drawn as to which factors hinder collaboration and what can be made to facilitate procedures towards joint tasks and collaboration.