Purpose: The purpose of this paper is to examine how online discussion can be used in work-integrated learning as a vehicle for students to demonstrate their learning in the workplace and to facilitate collaborative learning where face-to-face classes are not feasible. Design/methodology/approach: The paper evaluates the use of assessable online discussion in facilitating collaborative learning and scaffolding reflection in work placement subjects. It reviews the literature regarding the use of online discussion, particularly for work placement subjects, and evaluates the use of an online discussion forum in a case study subject in the Queensland University of Technology (QUT) undergraduate law course. Findings: The paper suggests that assessable online discussion forums are appropriate to facilitate student collaboration and collaborative learning in work placement subjects. Originality/value: The paper is original in its examination of the assessment of online discussion in a work-integrated learning context. (Contains 3 tables.)