Search frictions and labor market participation

Cross-country differences in labor market participation are often larger than differences in unemployment rates. The same holds true across demographic groups within a given economy. We argue that the interaction between labor force participation decisions and labor market frictions can help us understand these patterns. This interaction highlights dynamic aspects of the participation decision, in contrast to standard textbook treatments that emphasize static costs and benefits of participation. We extend the standard labor market search problem to allow for a third state—non-participation—and assumes that stochastic participation costs precipitate flows into and out of non-participation. We fully characterize the worker's decision problem and use numerical simulations to demonstrate how participation patterns vary with individual characteristics and with labor market conditions.     

The Threat Effect of Active Labour Market Programmes*

In this paper, we estimate the threat effect of active labour market programmes (ALMPs) for a sample of unemployed men in Denmark. Threat effects of such programmes capture the impacts of a system of ALMPs prior to actual participation. Rational economic agents make search decisions based on the expected discounted value of unemployment, and the perceived risk of future participation in programmes may affect job‐search behaviour early in the unemployment spell. We find a strong and significant threat effect, which is shown to reduce average unemployment duration by two and a half weeks.     

The role of social capital in the labour market in China1

Social capital is considered to play an economic role in labour markets. It may be particularly pertinent in one that is in transition from an administered to a market‐oriented system. One factor that may determine success in the underdeveloped Chinese labour market is thus guanxi, the Chinese variant of social capital. With individual‐level measures of social capital, we test for the role of guanxi using a dataset designed for this purpose, covering 7,500 urban workers and conducted in early 2000. The evidence is consistent with the basic hypothesis. Both measures of social capital – size of social network and Communist Party membership – have significant and substantial coefficients in the income functions. Social capital can have influence either in an administered system or in one subject to market forces. It appears to do so in both parts of the labour market.     

The price of human capital in a pre-industrial economy: Premiums and apprenticeship contracts in 18th century England

Training through apprenticeship provided the main mechanism for occupational human capital formation in pre-industrial England. This paper demonstrates how training premiums (fees) complemented the formal legal framework surrounding apprenticeship to secure training contracts. Premiums varied in response to scarcity rents, the expected productivity of masters and apprentices, and served as compensation for the anticipated risk of default. In most trades premiums were small enough to allow access to apprenticeship training for youths from modest families.     

The impact of minimum wages on youth employment in Portugal

On January 1, 1987, the legal minimum wage for workers aged 18 and 19 in Portugal was raised by 49.3%. This shock is used as a “natural experiment” to evaluate the impact of the minimum wage change on teenagers’ employment. The method is to compare, based on firm-level microdata, the employment growth of 18-19-year-old workers with employment growth of older workers. The main findings are that the increase in the minimum wage significantly reduced employment of 18 and olds, but increased employment of 20- olds.     

CEO incentive plans and corporate liquidation policy

To investigate CEOs' incentives to liquidate their firms, we examine the effects of insider ownership and compensation in stock options on 30 voluntary liquidation decisions by industrial firms in the period 1975–1986. We find that liquidation decisions are influenced by CEO incentive plans and increase shareholder value. Firms with more outside board members, smaller market-to-book ratios, and attempts by outsiders to gain control are more likely to be liquidated. Although few top executives of liquidating firms subsequently take comparable jobs, at least 41% of CEOs who downsize are made better off by liquidation.     

Processes of normal inverse Gaussian type

With the aim of modelling key stylized features of observational series from finance and turbulence a number of stochastic processes with normal inverse Gaussian marginals and various types of dependence structures are discussed. Ornstein-Uhlenbeck type processes, superpositions of such processes and stochastic volatility models in one and more dimensions are considered in particular, and some discussion is given of the feasibility of making likelihood inference for these models.     

On a property of orthogonal arrays and optimal blocking of fractional factorial plans

It is shown that fractional factorial plans represented by orthogonal arrays of strength three are universally optimal under a model that includes the mean, all main effects and all two-factor interactions between a specified factor and each of the other factors. Thus, such plans exhibit a kind of model robustness in being universally optimal under two different models. Procedures for obtaining universally optimal block designs for fractional factorial plans represented by orthogonal arrays are also discussed. Acknowledgements. The authors wish to thank the referees for making several useful comments on a previous version.     

Censored regression quantiles with endogenous regressors

This paper develops a semiparametric method for estimation of the censored regression model when some of the regressors are endogenous (and continuously distributed) and instrumental variables are available for them. A “distributional exclusion” restriction is imposed on the unobservable errors, whose conditional distribution is assumed to depend on the regressors and instruments only through a lower-dimensional “control variable,” here assumed to be the difference between the endogenous regressors and their conditional expectations given the instruments. This assumption, which implies a similar exclusion restriction for the conditional quantiles of the censored dependent variable, is used to motivate a two-stage estimator of the censored regression coefficients. In the first stage, the conditional quantile of the dependent variable given the instruments and the regressors is nonparametrically estimated, as are the first-stage reduced-form residuals to be used as control variables. The second-stage estimator is a weighted least squares regression of pairwise differences in the estimated quantiles on the corresponding differences in regressors, using only pairs of observations for which both estimated quantiles are positive (i.e., in the uncensored region) and the corresponding difference in estimated control variables is small. The paper gives the form of the asymptotic distribution for the proposed estimator, and discusses how it compares to similar estimators for alternative models.