John C. Ham

Unemployment Insurance and Male Unemployment Duration in Canada

A model of unemployment duration is estimated with weekly micro data on Canadian men. Entitlement provisions in the unemployment insurance program and demand conditions are found to have a significant effect on the probability of leaving unemployment. The probability of a worker leaving unemployment declines with the duration of unemployment, holding unemployment insurance entitlement constant. When entitlement is allowed to vary, the probability of leaving first falls and then generally rises with unemployment duration. These results are robust with respect to allowing for person-specific unobserved heterogeneity and alternative specifications of duration dependence.

Estimation of a Labour Supply Model with Censoring Due to Unemployment and Underemployment

This study proposes and implements a method of labour supply estimation which is appropriate when the sample contains unemployed and underemployed workers. The estimation method consists of excluding unemployed and underemployed workers from the sample and then using (to avoid selection bias) an extension of Heckmans approach to the case where two correlated selection rules generate the sample. Hausmans specification test is then used to determine whether ignoring constrained workers has led to biases in traditional labour supply estimates, and the empirical results suggest that previous estimates of several important parameters are biased. Since the biases go in the direction that would be predicted by the hypothesis that the unemployed and underemployed are constrained, the results support this hypothesis.

Education, Unemployment, and Earnings

Using data on adult male workers, we first investigate the incremental effect of 1 year of schooling on unemployed hours and use this calculation to explain the difference in the proportional effects of schooling on earnings and wages. Schooling apparently reduces unemployed hours by reducing the incidence of unemployment spells, but it does not significantly affect their duration. We next test whether unemployed hours represent real constraints on worker behavior. To do this we develop and estimate life-cycle models of labor supply for workers with and without spells of unemployment, using longitudinal data. The results imply that perhaps three-quarters of the unemployed hours of male workers are part of the offer to sell labor.

Unemployment and the Social Safety Net During Transitions to a Market Economy: Evidence from the Czech and Slovak Republics

The authors investigate the remarkably short unemployment spells in the Czech Republic compared to Slovakia and other Central and East European economies. They estimate hazard functions and find that 40 to 5O percent of the difference in unemployment durations between the two republics is accounted for by differences in demographics and demand conditions. The remainder is explained by differences in coefficients, proxying the behavior of firms, individuals, and institutions. In both republics, the unemployment compensation system has a moderately negative effect on the exit rate from unemployment. Policymakers, hence, have latitude in providing adequate social safety nets without jeopardizing efficiency. Copyright 1998 by American Economic Association.

The Impact of Being Offered and Receiving Classroom Training on the Employment Histories of Disadvantaged Women: Evidence from Experimental Data

We address two questions using experimental data on disadvantaged women. First, what is the impact of being offered JTPA classroom training on the duration of unemployment and employment? Second, what is the effect of actually participating in this training on the length of such spells? Belonging to the treatment group shortens unemployment spells but has no effect on employment spells. Actually participating in training has a larger positive effect on the exit rate from unemployment than the effect of simply being a member of the treatment group. Ignoring the endogeneity of actual training in estimation substantially underestimates its effect.

Priorities and Sequencing in Privatization: Theory and Evidence from the Czech Republic

While privatization of state-owned enterprises has been one of the most important aspects of economic transition from a centrally planned to a market system, no transition economy has privatized all its firms simultaneously. This raises the issue of whether governments strategically privatize firms. In this paper we examine theoretically and empirically the determinants of the sequencing of privatization. First, we develop new and adapt existing theoretical models in order to obtain testable predictions about factors that may affect the sequencing of privatization. In doing so, we characterize potentially competing government objectives as (i) maximizing sales revenue from privatization or public goodwill from transferring shares of firms to voters, (ii) increasing economic efficiency, and (iii) reducing political costs due to layoffs. Next, we use an enterprise-level data set from the Czech Republic to test the competing theoretical predictions about which firm characteristics affect the sequencing of privatization. We find strong evidence that more profitable firms were sold first. This suggests that the government sequenced the sale of firms in a way that is consistent with our theories of sale revenue maximization and/or maximizing public goodwill from subsidized share transfers to citizens. Our results are also consistent with Shleifer and Vishnys (1994) prescription for increasing efficiency when there are political costs to employment losses caused by privatization. We also find that the Glaeser-Scheinkman (1996) recommendations for increasing efficiency by privatizing first firms subject to large informational shocks are consistent with our results. Finally, our findings are inconsistent with the government pursuing a static Pareto efficiency objective. In addition to enhancing the general understanding of privatization, our evidence suggests that many empirical studies of the effects of privatization on firm performance may suffer from selection bias since privatized firms are likely to have observable and unobservable characteristics that make them more profitable than firms that remain under state ownership.

Testing whether Unemployment Represents Intertemporal Labour Supply Behaviour

In the Lucas-Rapping (1969) model of the labour market, fluctuations in unemployment represent individuals optimally adjusting their labour supply behaviour in response to fluctuations in wage rates over the business cycle. In this paper I propose and implement a misspecification test of the Lucas-Rapping treatment of unemployment as labour supply behaviour using panel data. This test extends previous such work with micro data by simultaneously allowing for intertemporal substitution, uncertainty and endogenous unemployment. Using the standard specification of intertemporal labour supply behaviour, I find strong evidence against this interpretation of unemployment. There are two possible interpretations of the test results. The first is that it is necessary to turn to alternative models of the labour market in which unemployed workers are off a supply function. The second is that the test results indicate the necessity of moving to more complex models of intertemporal substitution. However, given current econometric techniques and data sets, these alternative models of intertemporal substitution will be extremely difficult to test.

Testing Intertemporal Substitution, Implicit Contracts, and Hours Restriction Models of the Labor Market Using Micro Data

We present new tests of three theories of the labor market: intertemporal substitution, hours restrictions, and implicit contracts. The intertemporal substitution test we implement is an exclusion test robust to many specification errors and we consistently reject this model. We model hours restrictions as part of an endogenous switching model. We compare the implicit probit equation to an unrestricted probit equation for unemployment and reject the hours restriction model. For the implicit contracts model, we estimate nonseparable within-period labor-supply and consumption equations. We test a cross-equation restriction of the model and cannot reject the implicit contracts model. (JEL E30, J22, J60)

Variation in Employment Growth in Canada: The Role of External, National, Regional, and Industrial Factors

This article investigates the effect of external, national, and sectoral shocks on Canadian employment fluctuations at the national, industrial, and provincial levels. We assume that employment growth in each industry-province pair depends on U.S. growth, lagged Canadian growth at the national, industrial, and provincial levels, an aggregate shock, and shocks specific to each industry, province, and industry-province pair. We estimate that the U.s. and Canadian shocks account for two-thirds and a quarter, respectively, of aggregate variation. Sectoral shocks account for only one-tenth of aggregate variation but represent 30% of the variation from Canadian sources.

Women's Unemployment During Transition: Evidence from Czech and Slovak Micro-Data

We analyse womens weekly probabilities of leaving unemployment in the Czech and Slovak Republics (CR and SR) in order to investigate three questions: 1) Why are unemployment rates much lower in the CR than the SR?; 2) Does the unemployment compensation scheme (UCS) substantially lengthen unemploment spells?; and 3) Why are womens unemployment rates higher than mens? We find that differences in the behaviour of the individuals, employers and institutions in the SR and CR (as measured by differences in coefficients) play a larger role in determining the CRs shorter female unemployment spells than do differences in measured demand and demographic variables. The UCS has only a moderate effect on duration and its impact is greater in the CR. The differences between mens and womens spells (in each republic) are explained more by differences in coefficients than by differences in observed characteristics.