2015-11-27 At GAP, we talk a lot about the value of employee engagement for sustainability. In carbon savings, in contributing to core business objectives, in creating social value. But it can be hard to put a single figure on the value of that engagement. We partnered with O2 Telefonica to find answers. Together, we produced Starting at Square One: Building a Business Case for Engaging Employees in Sustainability. Using O2 Telefonica's groundbreaking Think Big programme as a case study, we gathered all of the available data and put it under one roof. In gathering that data, we are building a framework for bringing diverse measurements together to understand the full p...