We investigate whether a worker’s sickness absence is affected by her colleagues’ absences from the workplace. The analysis is based on unique matched employer-employee data for Norwegian schoolteachers for the period 2001 to 2006 with information on different types of absences and multiple...

A dynamic Tobit model is applied to longitudinal data to estimate the hours of work of married women in Sweden during 1992-2001. Hours of work are found to be negatively related to fertility. Other characteristics of married women are also found to have an effect on labor supply. Inter- temporal...

This paper analyzes the inter-temporal labor force participation behavior of married women in Sweden. A dynamic probit model is applied, controlling for endogenous initial condition and unobserved heterogeneity, using longitudinal data to allow for a rich dynamic structure. Significant...

Using registry data on every employed Norwegian woman giving birth to her first child during the period 1995–2008, we describe patterns of certified and paid sick leave before, during and after pregnancy. By following the same women over time, we can explore how observed sick leave patterns...

Stock return predictability is a central issue in empirical finance. Yet no comprehensive study of international data has been performed to test the predictive ability of lagged explanatory variables. In fact, most stylized facts are based on U.S. stock-market data. In this paper, I test for...

This paper analyzes econometric inference in predictive regressions in a panel data setting. In a traditional time-series framework, estimation and testing are often made difficult by the endogeneity and near persistence of many forecasting variables; tests of whether the dividend-price ratio...

In this paper we test for the hysteresis versus the natural rate hypothesis on the unemployment rates of the EU new members using unit root tests that account for the presence of level shifts. As a by product, the analysis proceeds to the estimation of a NAIRU measure from a univariate point of...

This paper tests hysteresis effects in unemployment using panel data for 19 OECD countries covering the period 1956-2001. The tests exploit the cross-section variations of the series, and additionally, allow for a different number of endogenous breakpoints in the unemployment series. The...

An important question for policy makers is how drug users may respond to changes in economic factors. Based on a unique data set of almost 2,500 interviews with people attending a needle exchange service in Oslo, this paper aims at estimating the impact of economic factors on heroin and...

This paper demonstrates that unit root tests can suffer from inflated Type I error rates when data are cointegrated. Results from Monte Carlo simulations show that three commonly used unit root tests – the ADF, Phillips-Perron, and DF-GLS tests – frequently overreject the true null of a unit...