The main objective of this study is to test the mediating effect of perceived internal employability on the relationship between organizational practices of competence development, namely training, individualized support and functional rotation, and affective commitment, and to test the moderating effect of different generations in this mediation. The sample has 302 participants consisting of employees in several organizations based in the Portuguese territory. The results showed a mediation effect of employability in the relationship between two practices (individualized support and functional rotation) and affective commitment. Generation had a moderating influence on the relationship between individualized support and affective commitment. Additionally, this effect was also found between the three organizational practices of competence development and perceived internal employability and in the relation between perceived internal employability and affective commitment.
Key words: Organizational Practices of Competences Development, Employability and Affective Commitment.