The document presents an OER adoption pyramid with six essential factors for OER adoption: access, permission, awareness, capacity, availability, and volition. These factors are arranged hierarchically from externally determined to internally determined. The pyramid can be used to assess the OER readiness of individuals or institutions as potential OER users or creators by determining which factors may act as obstacles. Readiness tables can then visualize the opportunities and concerns for future OER engagement at an institution based on the analysis.