This document discusses using co-creation to develop corporate sustainability and responsibility strategies. It defines co-creation as a technique for engaging stakeholders to create and test new concepts and solutions. The benefits of co-creation include tapping into stakeholder knowledge and building consensus to surface great ideas. While some organizations have used co-creation for issues like new product development, its potential for developing sustainability strategies is not fully realized. The document examines Unilever's use of an online forum to engage over 2,000 experts in developing its sustainability plan and targets. It argues that co-creation could help involve more employees in sustainability efforts and overcome cynicism towards traditional employee engagement approaches.