Görzig, Bernd; Stephan, Andreas - DIW Berlin (Deutsches Institut für Wirtschaftsforschung) - 2002
shows that firms that increased material inputs relative to internal labor costs performed better in terms of gross … operating surplus than other firms. However, firms that increased external services relative to internal labor costs, thus … outsourcing service functions previously provided within the firm, performed worse. In sum, our findings support the view that …