This article considers how professional writing courses can prepare students in various disciplines for the workforce. Specifically, I argue for Writing in the Disciplines (WID) internships where students learn to write documents relevant for their careers while participating in practical work experiences. In the WID internships I describe, instructors collaborate with coordinators across campus to establish writing-intensive internships that focus on the needs of students and the community partner. This article illustrates the collaborative endeavors of three internships, highlighting the challenges and lessons learned from WID internships.