This article examines the intersection of technical and professional communication (TPC) and open educational resources (OER) through a social justice lens, critiquing TPC's slow adoption of OER despite its transformative potential. The article highlights how OER addresses accessibility, affordability, and representation challenges in education, showcases successful OER implementations, and outlines strategies for transformative change. It argues that OER empowers educators to tackle inequities directly and calls for greater scholarly focus and adoption of OER to advance equity and inclusion within TPC.