The thesis presents a research carried out with substitute teachers of the First Segment Department of the Colégio Pedro II and it has as the main question: What do the reports of the substitute teachers of the CPII s First Segment Department tell us about the meaning of their work, their identity and experience? As theoretical references, Tardif and Lessard (2005) were used for the reflections on the teaching work and theoretical categories (activity, experience and identity); Ball (2001, 2012), for the theoretical reflection on the concept of policy and policy enanctment, and Dubet (2014), for the discussion on inequalities. Goffman s concepts of face and stigma, among others, was used as theoretical-methodological reference, including the socio-linguistic-interactional analysis The research has a qualitative framework. The researcher used as strategies to collect and generate data: a) bibliographical research on laws and regulatory documents of the work of substitute teachers in Colégio Pedro II, b) semistructured interviews with fifteen teachers, c) fourteen interviews with schools managers and Teacher s Association delegates. Content analysis was used to analyze the data collected in documents and generated in interviews. The dialogue between Education and Language, especially Interational Sociolinguistics (GOFFMAN, 2013 [1964], 2013 [1979], b MISHLER, 1986a, 1986b), contributed to analyze the interviews as a social event. The interviewer s interaction with the interviewees and the construction of meaning by the actors were also placed in focus. As a result, the substitute teachers of Colégio Pedro II have more assured rights than colleagues from other networks in Brazil. Regarding the teaching activity, the teachers indicate that they value the school structure, both physical and pedagogical – the last carried out by the Orientation and Coordination teams. Despite the formal precariousness they are more satisfied than the substitute teachers of other networks, public or private. The work experience was perceived as formative, a faculty, renewal, empowerment moment. Some teachers emphasize having learned to teach, to evaluate, and also to teach by adapting the rhythm and content to the needs of the students. The experience of contract is sought as a possible trampoline to the condition of permanent teacher, the majority s desire. Regarding identity, although the work experience has led to a re-signification of being a teacher for some, they criticize the lack of endorsement for the realization of some projects, the lack of voice for the manifestation in some spaces. Some of the substitute teachers feel as a disposable labor even though they realize how much the school needs their work. They demand more egalitarian treatment, both in formal (worked hours, salary) and symbolic aspects, and they suggest that their experience should be valued in permanent teachers’selection. The sociolinguistic analysis shows how teachers manage, during the interviews, to balance the dual hierarchy of power (permanent teacher researcher vs. interviewed substitute teacher) and the stigma of the substitute, through stigma avoidance strategies and the construction of a competent teachers face, or through the reporting the stigma that marks the position of substitute teacher.