We investigate how differences in regulation regarding banking-commerce integration and banking sector concentration influence loan spreads across 29 countries. Theoretical research posits conflicting effects based on agency costs, information asymmetry costs, and market power. Increased integration is associated with lower loan spreads in countries with low concentration, but moving to high levels of integration increases spreads in countries with high concentration. Starting from lower levels, an increase in integration is associated with an increase in informational efficiency that disappears at higher levels of integration. We also show that market concentration affects loan spreads differently under high-, medium-, and low-integration regimes

I study the relation between corporate diversification and labor productivity in a sample of over 500,000 firms from 46 countries. Across the entire sample, greater diversification is associated with significantly lower labor productivity. The negative relation between diversification and labor productivity is not stronger in countries with more burdensome employment regulation, but it is significantly stronger in countries with better financial development. In addition, the negative relation is stronger in industries with high capital/labor ratios. Overall, the results suggest that the lower productivity in diversified firms is due more to the misallocation of capital than to the inefficient use of labor