“…In recent decades, the economic theory of contracts has developed rapidly. It has received contributions from several areas, of which TCE and agency theory are the most important (Bogetoft and Olesen, 2004). In TCE, a contract between a buyer and a supplier means specific transactions, agreements and promises, and the terms of the exchange are defined by price, asset specificity and safeguards, on the assumption that quantity, quality and duration are all specified (Williamson, 1996).…”