While seizing the historic opportunity to reunify Europe by its enlargement to central and Eastern European countries, the EU neglected the strategic preparations for enlargement. It failed to invest enough into analysing the consequences of accession to 10 members for its internal functioning....

[eng] This paper is intended to discuss and test some of the principal theoretical arguments for profit-sharing. We outline here a rigorous theoretical foundation for microeconomic motivating effects of profit related pay. The empirical results confirm this theory of cooperation and give clear...