In the current search for tools that encourage and assess learning and development, personal development plans (pdps) are being used ever more frequently by organizations. A pdp is an assessment tool used by the employee to reflect on, to document the competencies s/he has been working on and to present his/her plans for further development. This study conducted among employees working in a governmental organization in the netherlands (n = 287) focused on the pdp practice as conceptualized by three supporting conditions: learning and reflection, information and feedback and the motivating supervisor. It examined which of these features enhance the undertaking of learning activities, expertise-growth, flexibility towards changing circumstanc...