Transition collaboration has been discussed as a potential coupler, joining secondary and postsecondary professionals' efforts to improve transition outcomes. Although transition collaboration remains understudied and under discussed, there is growing attention to rehabilitation professionals' participation. Among rehabilitation professionals involved in transition are state vocational rehabilitation counselors, community rehabilitation providers, and centers for independent living personnel, all of which have related but distinctive roles. The purpose of this article is to stimulate discussion and generate knowledge regarding transition collaboration by updating and extending the Oertle and Trach (2007) transition literature review that emphasized rehabilitation professionals' involvement in transition collaboration. Operationally defined practices and a structural and measurement model are proposed. The implications for rehabilitation are discussed and recommendations for improvement are offered.