This paper discusses how international integration affects the need and scope for welfare state activities. The first part reviews the main mechanisms, which have been considered in the literature, namely, tax base mobility, risk and race to the bottom effects in welfare policies. The second...

Acemoglu, Johnson, Robinson, and Yared (2008) demonstrate that estimation of the standard adjustment model with country-fixed and time-fixed effects removes the statistical significance of income as a causal factor of democracy. We argue that their empirical approach must produce insignificant...

When treatment effects of active labour market programmes are heterogeneous in an observable way across the population, the allocation of the unemployed into different programmes becomes a particularly important issue. In this paper, we present a statistical model designed to improve the present...

Using a simple model with two levels of skill, we assume that high-skill workers who fail to get high-skill jobs may accept low-skill positions; low-skill workers do not have the analogous option of filling high-skill positions. This asymmetry implies that a slowdown in Hicks-neutral technical...

In this paper, we perform an extensive Monte Carlo study of the finite sample properties of different estimators for panel data sample selection models. The estimators investigated are various two-step estimators and maximum likelihood estimators with simultaneous equations for the...

In static single equation cointegration regression models the OLS estimator will have a non-standard distribution unless regressors are strictly exogenous. In the literature a number of estimators have been suggested to deal with this problem, especially by the use of semi-nonparametric...

In this paper we analyze investments in human capital assets in a way which is standard for financial assets, but not (yet) for human capital assets. We study mean-variance plots of human capital assets. We compare the properties of human capital returns using a performance measure and by sing...

The choice of exchange rate regime is considered for a small open economy. Assuming that different forms of fixed exchange rate regimes involve different costs of reneging, it is shown that one potential beneficial aspect of joining a monetary union with a common currency is that it is less...

We consider the empirical relevance of two opposing hypotheses on the causality between income and democracy: The Democratic Transition claims that rising incomes cause a transi¬ tion to democracy, whereas the Critical Junctures hypothesis denies this causal relation. Our empirical strategy is...

The paper considers a two-sector economy with a constant population: The public sector, with stable productivity, and a private sector, with productivity growth. Baumol’s law says that such an economy has no steady state. It is demonstrated what this means. Two attempts to uphold a policy that...