Search results

We examine the roles of sample initial conditions and unobserved individual effects in consistent estimation of the dynamic binary response panel data model. Different specifications of the model are estimated using female welfare and labor force participation data from the Survey of Income and Program Participation. These include alternative random effects (RE) models, in which the conditional distributions of both the unobserved heterogeneity and the initial conditions are specified, and fixed effects (FE) conditional logit models that make no assumptions on either distribution. There are several findings. First, the hypothesis that the sample initial conditions are exogenous is rejected by both samples. Misspecification of the initial conditions results in drastically overstated estimates of the state dependence and understated estimates of the short- and long-run effects of children on labor force participation. The FE conditional logit estimates are similar to the estimates from the RE model that is flexible with respect to both the initial conditions and the correlation between the unobserved heterogeneity and the covariates. For female labor force participation, there is evidence that fertility choices are correlated with both unobserved heterogeneity and pre-sample participation histories.

Informality is a growing phenomenon in the developing and transition country labor market context. In particular, it is noticeable that working in an informal employment relationship is often not temporary. The degree of persistence of informality in the labor market might be due to different sources: structural state dependence due to past informality experiences and spurious state dependence due to time-invariant unobserved individual effects, which can alter the propensity of being in the informal sector independently from actual informality experiences. The purpose of our paper is to study the dynamics of informality using a genuine panel data set in the Ukrainian labor market. By estimating a dynamic panel data probit model with endogenous initial conditions, we find a highly significant degree of persistence due to previous informality experiences. This result implies that policies attempting to reduce current levels of informality may have a long-lasting effect on the labor market.

The purpose of this paper is to enhance the understanding of labour force participation behaviour of married Australian women, with a focus on identifying the sources of observed inter-temporal labour force participation persistence.

A dynamic Probit model is applied to the Household, Income and Labour Dynamics in Australia (HILDA) Survey, a national representative panel survey of Australian households. The model used accounts for observed and unobserved individual heterogeneity and serially correlated transitory shocks to labour supply.

The results show that both observed and unobserved individual heterogeneity contributes to observed inter-temporal persistence of labour force participation of married Australian women, but the persistence remains even after controlling for these factors. It is also found that failing to control for serially correlated unobserved transitory shocks would lead to underestimation of genuine state dependence of labour force participation; and that state dependence of labour force participation varies with age, education, health, immigration status and the number of children under the school age.

This study adds to the international literature on labour force dynamics of women by providing Australian empirical evidence and through a flexible modelling framework. The result that there exists genuine positive state dependence in married Australian women’s labour force participation suggests that policy intervention that increases married women’s labour supply would have a long-lasting effect.

The purpose of this study is to enhance understanding labour supply dynamics of the UK workers by examining whether and to what extent there is state dependence in the labour supply at both the extensive and intensive margins.

A dynamic two-tiered Tobit model is applied to the first seven waves of Understanding Society: the UK Household Longitudinal Study. The model used accounts for observed and unobserved individual heterogeneity and serially correlated transitory shocks to labour supply to draw inferences on state dependence.

The results show that both observed and unobserved individual heterogeneity contributes to observed inter-temporal persistence of the labour supply of the UK workers, and the persistence remains after these factors are controlled for, suggesting true state dependence at both the extensive and intensive margins of the labour supply. The study also finds that at both the margins, the state dependence of labour supply is larger for females than for males and that for both genders the state dependence is larger for people with low education, mature aged workers and people with long-standing illness or impairment. The results also show that estimates from a conventional Tobit model may produce misleading inferences regarding labour supply at the extensive and intensive margins.

This study adds to the international literature on labour supply dynamics by providing empirical evidence for both the extensive and intensive margins of labour supply, while previous studies tend to focus on the extensive margin of labour force participation only. Also, unlike earlier studies that often focus on females, this study compares labour supply dynamics between males and females. The study also compares the estimates from the more flexible two-tiered Tobit model with that from the conventional Tobit model.

Hausman (1978) represented a tectonic shift in inference related to the specification of econometric models. The seminal insight that one could compare two models which were both consistent under the null spawned a test which was both simple and powerful. The so-called ‘Hausman test’ has been applied and extended theoretically in a variety of econometric domains. This paper discusses the basic Hausman test and its development within econometric panel data settings since its publication. We focus on the construction of the Hausman test in a variety of panel data settings, and in particular, the recent adaptation of the Hausman test to semiparametric and nonparametric panel data models. We present simulation experiments which show the value of the Hausman test in a nonparametric setting, focusing primarily on the consequences of parametric model misspecification for the Hausman test procedure. A formal application of the Hausman test is also given focusing on testing between fixed and random effects within a panel data model of gasoline demand.

Hedonic models are commonly used in housing markets studies to obtain quantitative measures of various implicit prices. The use of panel data in other fields of research has proved to be valuable when accounting for unobserved heterogeneity. Given that houses are extremely heterogeneous, and given that it is impossible to include all relevant attributes in hedonic models, removing unobserved heterogeneity by basic panel data models sounds appealing. This paper seeks to compare results between models that use pooled cross section data and panel data. The main research question is whether the pooled model gives unbiased estimates on some basic implicit prices.

The paper applies the hedonic methodology. It uses regression analysis and estimate basic and parsimonious models that use either pooled time series and cross section data or panel data. The empirical results when using the two different approaches are compared.

The paper illustrates that the results from the pooled timeseries and cross section model could be biased for some basic implicit prices. With some nuances, it is illustrated that in specific situations the use of a basic panel data estimator could be a simple solution to the problem of misspecification due to omitted, time‐invariant explanatory variables.

Most of the included variables do not change over time, however. In these cases potential bias using a basic fixed effects approach could not be checked for. It is also problematic that the variation in some of the time‐varying variables is not reliable and small. Finally, there could be a problem with sample selection bias. This may limit the usefulness of using panel data in disaggregated hedonic house price studies.

Hedonic house price models are frequently used in housing market research. It is therefore important to study in various ways whether the traditional approaches provide unbiased results. In this paper models that use panel data are compared to models that use more traditional time series and cross section data. To the author's knowledge, this approach has not been followed before.

Field experiments have raised important issues of interpretation of bargaining behavior. There is evidence that bargaining behavior appears to vary across groups of populations, such as nationality, ethnicity and sex. Differences have been observed with respect to initial behavior and with respect to the adjustment pattern over time. Often, such behavioral differences are referred to as cultural, although the delineation of the cultural group has been confined to one or other observable characteristic in isolation. We show that this way of characterizing cultural differences is overly simplistic: at best, it leads to unreliable claims; at worst, it leads to erroneous conclusions. We reconsider the evidence provided by previous experiments using ultimatum game rules, and undertake new experiments that expand the controls for demographics. The lesson from our demonstration is that the task of designing experiments for the field offers many challenges if one wants to define and control for cultural impacts, but that field experiments also offer potential for providing new insights into these issues.

Poverty and informal employment are often regarded as correlated phenomena. Many empirical studies have shown that informal employment has a causal impact on household poverty, mainly through low wages. Yet other studies focus on the reverse causality from poverty to informality, arising from a range of constraints that poverty poses to jobholders. Only recently have empirical researchers tried to study the simultaneous two-way relationship between poverty and informality. However, existing studies have relied upon cross-sectional data and static econometric models.

This chapter takes the next step and studies the dynamics of poverty and informality using longitudinal data. Our empirical analysis is based on a bivariate dynamic random-effect probit model and recent panel data from Argentina. The method used provides a means of assessing the persistence over time of poverty and informal employment at the individual level, while controlling for both observed and unobserved determinants of the two processes. The results show that both poverty and informal employment are highly persistent processes. Moreover, positive spillover effects are found from past poverty on current informal employment and from past informality to current poverty status, corroborating the view that the two processes are also shaped by interrelated dynamics in segmented labor markets.

The purpose of this paper is to use longitudinal Canadian data from the National Population Health Survey (1994-2006) to examine the impact of provincial unemployment rate on mental health as measured by the short form depression scale.

To control for the unobserved individual specific factors, the study utilized individual-specific fixed-effects model.

The study found that, for the overall model, provincial unemployment rate has a significant positive impact on depression. The study further examined the impact of unemployment rate on depression for a number of sub-groups based on gender, age, marital status, and education. The results suggest that the impacts of unemployment rate on depression are heterogeneous across different sub-groups.

The results of this study have important policy implications. Previous studies suggest that mental stress may lead to risky health behaviours such excessive drinking, substance use, and smoking. These risky health behaviours may have long term health consequences in terms of chronic conditions such as heart disease, cancer, etc. Thus policy makers may consider taking appropriate steps to provide mental health support during the period of recession. Such support may also be helpful for the unemployed individuals who are too depressed to search for job.

Previous studies on this issue may suffer from potential bias since they omitted unobserved individual specific factors from the estimating equations. This paper has taken the opportunity of utilizing longitudinal Canadian Population Health Survey and adopts an individual specific fixed effects method to estimate the effects of macroeconomic conditions on mental health. All of the studies reviewed here used data from the USA. So far no study has examined the impact of unemployment rate on mental health using Canadian data. It is interesting to conduct a study using Canadian data since there are important differences between Canada and the USA with respect to labour market policies and health care systems.

This study investigates the formal/informal employment earnings gap in Turkey. We focus on the earnings differentials that can be explained by observable characteristics and unobservable time-invariant individual heterogeneity. We first, estimate the standard Mincer earnings equations using ordinary least squares (OLS), controlling for individual, household, and job characteristics. Next we use, panel data and the quantile regression (QR) techniques in order to account for unobserved factors which might affect the earnings and the intrinsic heterogeneity within formal and informal sectors. OLS results confirm the existence of an informal sector penalty almost half of which is explained by observable variables. We find that formal-salaried workers are paid significantly higher than their informal counterparts and of the self-employed confirming the heterogeneity within the informal employment. QR results show that pay differentials are not uniform along the earnings distribution. In contrast to the mainstream literature which views informal self-employment as the upper-tier and wage-employment as the lower-tier, we find that self-employment corresponds to the lower-tier in the Turkish labor market. Finally, fixed effects estimation indicates that unobserved individual characteristics combined with controls for observable characteristics explain the pay differentials between formal and informal employment entirely in the total and the female sample. However, informal sector penalty persists in the male sample.