This workshop is for academics, learning designers and academic leaders who work with developing assessment tasks across the spectrum of work integrated learning initiatives. Participants are asked to come with an assessment task that they have used, or plan to use, for students preparing for, or reflecting on, a work placement, practicum or simulated work experience. The workshop will explore how these types of assessment tasks create a dialogue at the boundary between academic discipline knowledge and the reflexive knowledge of a skilled practitioner. Peter and Lina will draw on their recent work on epistemic fluency to introduce the workshop. They have analysed a range of assessment task designs in a variety of professional education contexts to try to identify the multiple forms of knowledge and ways of knowing with which students have to become fluent in preparing for professional practice. Many aspects of professional work involve the creation of new understandings – such as in inter-professional dialogues or client consultations. Often this epistemic work goes unnoticed, though sometimes it involves conscious problem-solving and innovation. The workshop will be a hands-on investigation of how these ideas about epistemic fluency, knowledge work and actionable knowledge can be applied in designing better assessment tasks.