By Fei Li and Can Tian
http://d.repec.org/n?u=RePEc:pen:papers:12-024&r=dge
We consider the impact of job rotation in a directed search model in which firm sizes are endogenously determined and match quality is initially unknown. A large firm benefits from the opportunity of rotating workers so as to partially overcome loss of mismatch. As a result, in the unique symmetric equilibrium, large firms have higher labor productivity and lower separation rates. In contrast to the standard directed search model with multi-vacancy firms, this model can generate a positive correlation between firm size and wage without introducing any ex ante productivity differences or imposing any non-concave production function assumption.
Interesting contribution in the literature that tries to explain the positive correlation between firm size and wages. Internal reassignments do indeed provide opportunities for correcting mismatches, something small firms cannot enjoy. The latter must go though costly firing and hiring. I wonder whether the correlation is stronger in countries where the latter costs are higher, which would corroborate this theory.