Purpose - This study explores the role of previous occupational identity in the formation of the (new) teacher identity of vocational teachers. The focus is on how vocational teachers discover their teaching identity, how they describe the connection between their previous occupation and teacher identity and how they describe a competent member of the teaching community.

Design/methodology/approach - The theoretical approach is inspired by Communities of Practice (CoP) theory. More specifically, the realignment between socially demanded competence in the profession and personal experience as well as identification with the teaching community are discussed. The research material comes from 14 interviews with vocational teachers in different disciplines.

Findings - Findings indicate first that the process of professional identity (trans)formation was initiated by finding one's teaching self when the individuals became aware of their interest in teaching by discovering that they had already achieved some sort of teaching-related competence. Second, individuals had been connecting their professional identities – finding common competence between their previous occupation and the teaching role. Third, vocational teachers experienced legitimising their competence and their new identity with reference to what their new CoP instructed as important competence (regime of competence).

Originality/value - While teachers' vocational competence is not scrutinised, their teaching competence needs to be constantly proved. This imbalance often leads to teachers returning to an aspect of their identity that is well established – their vocational competence. Looking back to their occupational competences constitutes a realignment backwards, when teachers attempt to serve their new professional goal by drawing on old competence.