Many developed countries are currently considering a move toward subsidized, widely accessible child care or preschool. However, studies on how large-scale provision of child care affects child development are scarce, and focused on short-run outcomes. We analyze a large-scale expansion of subsidized child care in Norway, addressing the impact on children's long-run outcomes. Our precise and robust difference-in-differences estimates show that subsidized child care had strong positive effects on children's educational attainment and labor market participation, and also reduced welfare dependency. Subsample analyses indicate that girls and children with low-educated mothers benefit the most from child care. (JEL J13, J16)

Does adoption of broadband internet in firms enhance labor productivity and increase wages? And is this technological change skill biased or factor neutral? We exploit rich Norwegian data with firm-level information on value added, factor inputs and broadband adoption to answer these questions. We estimate production functions where firms can change their technology by adopting broadband internet. A public program with limited funding rolled out broadband access points, and provides plausibly exogenous variation of broadband adoption in firms. This enables us to address endogeneity of broadband adoption and examine how it shifts the production technology and changes the productivity and labor outcomes of different types of workers. We find that broadband adoption favors skilled labor by increasing its relative productivity. The increase in productivity of skilled labor is especially large for college graduates in fields such as science, technology, engineering and business. By comparison, broadband internet is a substitute for workers without high school diploma, lowering their marginal productivity. Consistent with the estimated changes in labor productivity, wage regressions show the expansion of broadband internet improves (worsens) the labor outcomes of skilled (unskilled) workers. We explore several possible explanations for the skill bias of broadband internet. We find suggestive evidence that broadband internet complements skilled workers in executing nonroutine abstract tasks, and substitutes for unskilled workers in performing routine tasks. When we use our production function estimates to construct measures of firm level productivity, we find that broadband internet accounts for a few percent of the standard deviation in total factor productivity across firms. Taken together, our findings have important implications for the ongoing policy debate over government investment in broadband infrastructure to encourage productivity and wage growth.

We thank James J. Heckman, three referees, and seminar participants at several universities and conferences for comments and suggestions. We are grateful to Rasmus Landersø for helping us with the analysis of the Danish data. The project received financial support from the Norwegian Research Council. The views expressed herein are those of the authors and do not necessarily reflect the views of the National Bureau of Economic Research. NBER working papers are circulated for discussion and comment purposes. They have not been peer-reviewed or been subject to the review by the NBER Board of Directors that accompanies official NBER publications.