This document provides an overview of open access, including definitions, models (green vs gold), policies and mandates, and the situation at the University of Queensland. It defines open access as digital scholarly work that is free of copyright restrictions. The two main models of open access are green, which involves self-archiving work in an institutional repository, and gold, which are open access journals. Major funders like the ARC and NHMRC now mandate open access policies. UQ is piloting an open access program to help comply with mandates and encourage self-archiving in its institutional repository, eSpace.