This document outlines the agenda and rules for a workshop on open data and potential business models. The workshop instructs participants to form groups to discuss what data their organizations have that could be opened, the benefits of sharing that data and who would benefit, any blockages to opening the data and who might oppose it, and business strategies for making the data available despite potential blockages. The groups will then present their preferred business model to the full workshop. The goal is for participants to explore how opening up an estimated 140 billion euros worth of government data could create business opportunities.