This paper studies a two-sector model of learning-by-doing that is partially transferable between sectors. There is a potential efficiency gain from intersectoral turnover when the sectors have different complementary production costs or learning curves of different steepness. If workers are...

This paper studies the role of transfer fees in professional sports, where players can commit to binding long-term contracts. They cannot switch clubs before their contract expires unless the old club agrees to let them go; transfer fee is the price of that agreement. Transfer fees have been...

Workers have different abilities in research, development and innovation (R&D&I) activities. Firms have different “prospects for innovation”. Innovation is facilitated by matching innovators, i.e. workers that are specialized in R&D&I to firms with good prospects for innovation. Aggregate...