This paper takes a welfare-view on eastern enlargement of the EU, focusing on incumbent countries. Enlargement is decomposed into three elements: Single-market integration on commodity markets, budgetary costs from EU-expenditure policies, and single-market-induced migration from new to present...

Ausgangspunkt dieser Arbeit ist die Behauptung, dass der migrationspolitische Diskurs zu wenig auf die internationale Integration von Gütermärkten Bedacht nimmt. Die Debatte wird weitgehend arbeitsmarktökonomisch geführt, wobei der sogenannte immigration surplus für das Zuwanderungsland und...

An eastern Enlargement of the EU, from an incumbent country point of view, involves a fiscal burden from extending Union agricultural and cohesion plicies to new members, coupled with potential gains as well as adjustment problems deriving from an extended customs union and a larger single...

I develop a generalized factor price frontier which incorporates endogenous adjustment of international fragmentation in multistage production, allowing for a continuum of stages. This allows us to address fragmentation, not only as an exogenous event, but also as an integral part of endogenous...

We explore the role of trade in differentiated final goods as well ollshoring of tasks for inequality both within and between countries. We emphasize the distinction between managerial and production labor. Managerial labor is a fixed input while production labor is a variable input. Following...

The policy debate views offshoring as job destruction. Theoretical models of offshoring mostly assume full employment. We develop a model of task trade that allows for equilibrium unemployment. In this model, there are two margins of adjustment. At the extensive margin, moving tasks offshore...

This paper investigates the role of firm productivity in drawing firm boundaries in global sourcing. Our analysis focuses on how productivity affects the allocation of ownership rights between the headquarter of a firm and its intermediate input supplier (vertical integration vs. outsourcing),...

Zwischen der ökonomischen Theorie und der praktizierten Handelspolitik besteht ein gespanntes Verhältnis. Häufig wird der Theorie unterstellt, sie predige einseitig und unverantwortlich Freihandel, andererseits scheint die Politik diesem Rat ohnehin massiv zu widersprechen. Praktiziert wird...

We argue that the narrative of variety-induced gains from trade in differentiated goods needs revision. If producing differentiated varieties of a good requires differentiated skills and if the work force is heterogeneous in these skills, then firms are likely to have monopsony power. We show...

Which firms find it optimal to integrate their input suppliers into the firm boundaries of control (vertical integration)? Which firms choose to expand their sourcing activities across the national border (offshoring)? This letter provides novel evidence on these questions based on a Spanish...