This article examines the relationship among voluntary labour supply and commercial income for Norwegian sport voluntary organizations. Empirical results using cross-sectional data on voluntary sport organizations in Norway and on their members show a decrease in voluntary work from an increase...

In 30% of young American couples the wife is more educated than the husband. Those women are characterized by a substantially higher employment (all else equal), which in turn amplifies income inequality across couples. Using NLSY79, we formulate and structurally estimate a dynamic life-cycle...