A new class of technologies has joined those available in HR management system platforms, making it easier for organizations to collect data on their employees’ productivity and experiences. Employees are also equipping themselves with wearables and apps to track and improve their productivity. Forrester collectively calls this trend “the quantified workforce” — but how to effectively interpret the data and where to draw the lines for employee privacy are the defining questions in this area. This report explains the quantified workforce as well as the technologies, the limitations, and what companies are learning.