The worldwide increase of foreign direct investment (FDI) in the past decades has given rise to numerous studies investigating the economic effects of FDI on the host economies. One frequently analyzed issue is that of technology transfer via foreign subsidiaries. Apart from the direct transfer of modem equipment and know-how from the parent company to the foreign subsidiary, especially the trickle down or spillover effects from foreign subsidiaries in favor of domestic firms caught researchers' attention. These spillover effects are expected to positively contribute to domestic firm's productivity. Consequently, spillover effects are of interest particularly for countries or regions in the process of catching up economically. Existing empirical studies on technology spillovers usually apply an econometric approach in which labor (or total factor) productivity is regressed on a number of independent variables. To measure spillovers, single variables are included in order to serve as proxy for the presence of foreign firms, usually the share of employment or sales in foreign subsidiaries in total industry employment or sales. A large number of econometric spillover studies exists for developing countries, the results of which, however, differ considerably. Recently, econometric spillover research has also been carried out for developed countries, especially EU member countries with structurally weak regions, not very surprisingly also with different outcomes. Blomstrom/ Kokko (1998), in their summarizing study about multinational enterprises and spillovers, conclude that the occurrence of spillovers depends largely on the country and sector observed. In particular, the positive effects of foreign investment are likely to increase with the level of local capability and competition. With the political changes in Eastern Europe and the beginning of transition, FDI for the first time grew strongly in these economies, as well. Especially the Econometric research of that type was pioneered by Caves (1974) and Globerman (1979) using cross sectional industry level data for Australia and Canada respectively. They found a positive impact of foreign investors on local firms. Prominent examples for spillover studies on developing countries are works by Blomstrom (1986), Blomstrom/ Wolff (1994), Kokko (1994), and Kokko (1996), who found a positive impact on productivity in the Mexican industry for the early 1970s. Aitken/ Harrison (1999) in contrast found a negative impact of foreign investors on productivity in Venezuela for 1976-1989. For the Indonesian manufacturing industry, Blomstrom/ Sjoholm (1999), Sjoholm (1999a), and Sjoholm (1999b) in turn found a positive impact on local companies (for various time periods between 1980 and 1991). For the Uruguayan manufacturing industry, Kokko et al. (1996) and Kokko et al. (2001) could not find a statistically significant impact of foreign subsidiaries on productivity. Kathuria (2000) and Kugler (2001) did not find statistically significant evidence for spillovers in India and Columbia, either. See for example: Girma (2003) and Driffield/Love (2002) for the UK, Ruane/Ugur (2001) for Ireland, Barrios/Strobl (2002) for Spain, etc. The Absence of Technology Spillovers from FDI in Transition Economies 151 candidate countries for EU enlargement - the most advanced and stable transition economies - received considerable amounts of FDI (see Figure 1). Fig. 1. FDI stock per head in CEEC 2002 (US $) Data source: WIIW (The Vienna Institute for International Economic Studies)AVIFO (Austrian Institute for Economic Research): WIIW-WIFO Database on FDI. 1994 instead of 1993 From the outset, foreign direct investment has been regarded as an important source of technology transfer in transition economies. As a consequence, the question of technology spillovers also caught the attention of researchers for this group of countries (e.g. Konigs, 2001; Bosco, 2001; Kinoshita, 2000; Smarzynska, 2002; Zukowska-Gagelmann, 2001). Thus far, however, econometric spillover studies on transition economies have hardly provided evidence for positive spillover effects on domestic firms. Some investigations even point out a negative impact on domestic enterprises. Explanations for the current lack of spillovers are provided only sparingly. Furthermore, there seems to be no consistent theoretical framework about technology spillover mechanisms. Empirical studies - be it on developing, developed, or transition economies - either take for granted that foreign subsidiaries somehow generate trickle down effects or they mention more or less exemplarily different channels for spillovers. Therefore, this paper will first develop a consistent and comprehensive theoretical framework explaining how technology spills over from foreign subsidiaries to domestic firms. This is followed by a presentation of the results of existing econometric spillover studies for transition economies. Finally, possible explanations for the obvious lack of technology spillovers will be deduced from an empirical qualitative study that takes an enterprise perspective.