Outsourcing has been broadly recognized as an important strategic choice made by companies and other organizations to achieve a wide variety of goals. Many studies have focused on the economic and financial impacts and on the relationship between outsourcers and outsourcees. This chapter offers a comprehensive overview of actual outsourcing outcomes found in management research, including impacts on human capital. Analysis of the evidence on outsourcing in the OECD STAN database (OECD 2011: 1970-2009) shows that both the number of transactions (deals) and their scope (activities involved) have increased constantly during the last 20 years. Over time, outsourcing popularity peaks have coincided with certain trends, such as business process...