Clinical workplaces offer postgraduate trainees a wealth of opportunities to learn from experience. To promote deliberate and meaningful learning self-regulated learning skills are foundational. We explored trainees' learning activities related to patient encounters to better understand what aspects of self-regulated learning contribute to trainees' development, and to explore supervisor's role herein. We conducted a qualitative non-participant observational study in seven general practices. During two days we observed trainee's patient encounters, daily debriefing sessions and educational meetings between trainee and supervisor and interviewed them separately afterwards. Data collection and analysis were iterative and inspired by a phenome...