The radical economic, social and cultural changes experienced by the labour market within recent decades have helped to highlight the central role played by the learning process in individual career development and organizational success. In such fast-moving working contexts, skills and competencies rapidly become outdated and need to be continuously implemented and empowered as a strategic factor for global competitiveness. Traditional models of learning both inside and outside of the workplace have become unable to explain the complexity of such a process, weaving between and overlapping formal and informal components. Starting with this premise, the aim of the present paper was to analyse the role of knowledge and experience as important learning frames, which allow the acquisition and development of competencies in the workplace. A human resource development perspective was adopted, aimed at reconciling both the organizational and individual stances implied in the process. The methodology of achieving this was to review the most recent literature on workplace learning, with a special focus on its formal and informal dimensions.