On selecting a measure of labour activity: evidence from registered nurses, 1981 and 1989

The purpose of this paper is to demonstrate the effects of the selection of measures of labour activity on the conclusions that are derived from the analysis of individual labour supply. The results of the analysis using three commonly specified single measures (Annual Hours Worked, Hours Worked per Week, and Weeks Worked per Year) as the dependent variable in TOBIT equations are compared with those obtained using a PROBIT-2SLS in which the individual labour supply is measured by Hours Worked per Week and Weeks Worked per Year. The RHS variables are those that are used in earlier individual labour supply studies and are the same in all of the models analysed. Among the findings are (1) wage rate effects that are quite strong in single equation models and disappear when a multi-equation approach is used, (2) the effects of children on labour supply is more complex than in indicated in single equation results and (3) duration dependence is much stronger than indicated results using a single measure of individual labour supply. These results suggest that using a single measure of labour supply will lead to inappropriate conclusions as to the effects of such variables as wage rates, number and ages of children, spouse's employment state, and income from other sources on individual labour supply.     

Testing for separability between commodity demand and labour supply in West Germany

In this paper we use a methodology for testing for separability of commodity demands from male and female labour supply on a single cross section. In the empirical section of our paper we apply the methodology to a representative micro data base for West Germany. We estimate the corresponding demand systems for nine goods, analyse their economic properties and test the hypothesis that male and female leisure are separable from commodity demand. We reject the hypothesis that goods are separable from male and female time. Moreover, we show the implications of our results for optimal taxation of goods and labour supply.     

Labour-supply impacts of effective welfare programme parameters: a reanalysis

We quantify the impact of effective welfare programme parameters on the labour supply of single female household heads – the primary group of welfare recipients in the USA. Our panel of data is derived from the US Census Bureau's Current Population Survey for the years 1979 to 1990 inclusive. Behavioural impacts from a range of economic variables are consistent in sign with predictions made by economic theory. We find that effective welfare gurantee levels and the effective tax rate on earned income both significantly decrease labour supply. The marginal effects of these welfare programme parameters are economically small: a US$1000 increase in the expected welfare guarantee level reduces annual labour supply by about 36 hours; a 10 percentage point increase in the effective tax rate on earned income reduces annual labour supply by about 7.5 hours.     

In-school labour supply,parental transfers,and wages

In many industrialised countries, teenagers have a significant spending power, and they are important customers for specialised industries. The income of teenagers still in full time education comes from two major sources: parental pocket money and earnings from part-time jobs. Little is known about the way these sources interact, and how they depend on parental, school and family characteristics. In this paper, we analyse labour supply of 16 year old British teenagers together with the cash transfers made to them by their parents. We first develop a theoretical model, where labour supply and transfers are jointly determined. We then estimate labour supply and transfers jointly, using unique data on labour supply of teenagers, the wages they receive, and the transfers from their parents. We show how these two processes depend on each other, and how transfers and labour supply react to changes in wages. We are grateful to the Leverhulme Trust for financial support for this research, which has also benefited from support to the IFS as a Designated Research Centre of the ESRC. We thank Murali Agastya, Richard Blundell, Ian Preston, Frank Windmeijer, and two anonymous referees and the editor Bernd Fitzenberger for useful comments.     

Taxes,female labour supply and household income: differences between the Netherlands and the Federal Republic of Germany

The article investigates the effect of taxes and social premiums on female labour supply and household income. A comparison is made between labour supply and household income between the Netherlands and the Federal Republic of Germany in 1992. A discrete choice model for labour supply is used in which taxes and social premiums are implicitly incorporated. As male labour supply is highly inelastic an individual, male chauvinist model is used. The estimated models are used to simulate the effect of the differences in the tax and social premium system on the differences in labour supply and income between both countries. The results indicate that labour force participation is higher the more individualized the system. The German system leads to a lower tax burden compared to the Dutch system. It is concluded that differences in the tax and social premium system between both countries have hardly any influence on the differences in the inequality of net household labour income. There is evidence that the German system leads to a slightly more unequal distribution of household income. It is also concluded that although the tax and social premium system does influence labour supply and income, it can be doubted whether these effects are substantial.     

Taxation and labour supply: Evidence from a representative population survey

We study how taxation influences labour supply using a specifically designed representative survey of the German population. First, we investigate whether taxes generally matter for the labour supply decisions of our respondents. Around 41 per cent report taking taxes into consideration, implying that the majority of the German population is unresponsive to taxation. Second, we look at self-reported labour supply adjustments following a recently enacted payroll tax change. Only around 12 per cent of our respondents report an actual labour supply response, but we find evidence of an income, as well as a substitution, effect of the tax change. Our conclusion is that the effects of taxes on labour supply in Germany are likely small. We analyse the correlation with economic and socio-demographic variables and find that the self-employed are relatively more sensitive to taxation and that low interest rates reduce incentives for expanding the labour supply.     

The Cost of Public Funds in Australia*

A model of labour supply is used to calculate Australia's marginal cost of public funds, which is the appropriate cut-off benefit/ cost ratio for an additional public project. The labour supply model incorporates effective average and marginal tax rates faced by the representative household in each gross income decile. These rates are estimated from the ABS 1988–89 Household Expenditure Survey. A simulation analysis is performed to calculate the effect on labour supply of a 1 per cent increase in marginal tax rates. The estimated changes in tax revenues and deadweight loss in each decile are used to estimate the marginal cost of public funds.     

Family labour supply: some empirical results from agriculture

The family is often taken as the decision-making unit in utility maximizing theories of labour supply. At a simple level, the family is composed of two elements, dependents and workers. This paper seeks to quantify the influence of these two elements on family labour supply in agriculture. Family farms are particularly suited to such analysis since institutional rigidities, like the fixed working week, are absent. Econometric methods are used on data from farms in the north-west of england for the year 1976/7. The cross-sectional study uses single equation methods. The results show that only family composition determines the labour supply of the farm family: they can then be used to quantify the effects of individual groups of dependents and workers on family labour supply.     

Dynamic Optimal Taxation with Private Information

We study dynamic optimal taxation in a class of economies with private information. Optimal allocations in these environments are complicated and history-dependent. Yet, we show that they can be implemented as competitive equilibria in market economies supplemented with simple tax systems. The market structure in these economies is similar to that in Bewley (1986) ; agents supply labour and trade risk-free claims to future consumption, subject to a budget constraint and a debt limit. Optimal taxes are conditioned only on two observable characteristics—an agent's accumulated stock of claims, or wealth, and her current labour income. We show that optimal taxes are generally non-linear and non-separable in these variables and relate the structure of marginal wealth and income taxation to the properties of agent preferences.     

Canadian regional labour market evolutions: a long-run restrictions SVAR analysis

Canada's high reliance on commodities can work against its constitutionally mandated goal of regional equity in economic development, while also inhibiting macroeconomic performance and limiting monetary policy effectiveness. Yet, flexible and integrated regional labour markets can help achieve both equity and macroeconomic goals. Therefore, this study examines the dynamics of Canadian provincial labour markets using a long-run restrictions structural vector autoregression (SVAR) model. Labour market fluctuations are decomposed into the parts arising from shocks to labour demand (new jobs), labour supply through migration (new people) and internal labour supply (original residents). The results suggest that demand innovations primarily underlie provincial labour market fluctuations. Despite significant geographic and language barriers that could impede their performance, there also is little overall evidence to suggest that provincial labour markets are more sluggish or less flexible than US state labour markets. Finally, original residents benefit slightly more from increased provincial labour demand compared to findings for US states.     

Population density,urbanisation and agricultural mechanisation in modern Ghana

Farmers' technological choices take place within farming systems that are shaped by population pressure, connectivity to urban markets and agro-ecological conditions. The relationship between these drivers and agricultural technology use is ambiguous. On the one hand, population growth can increase the supply of labour, driving down wage rates and reducing the incentives for mechanisation. On the other hand, rural–urban movements of people can reduce rural labour supply while simultaneously driving up the demand for food and hence the demand for mechanisation. Past theories of agricultural mechanisation have explained the low adoption of agricultural machinery in land-abundant cereal production systems of SSA in terms of these drivers. However, recent empirical observations find extensive adoption of mechanised ploughing technology by small, medium and large-scale farmers in Ghana. Examining the Ghanaian experience can thus shed new light on theories of mechanisation. A large household survey dataset covering eight districts is combined with geo-spatial data on population, urban proximity and agro-ecological factors to consider whether the existing theories are able to explain farm-level adoption decisions in this context. The analysis finds that a farmer's decision to use agricultural machinery is associated with lower population density and proximity to urban centres. In northern Ghana, these drivers of technological change are as important as farm household characteristics in understanding cross-sectional patterns of machinery adoption.     

Educational qualifications mismatch in Europe. Is it demand or supply driven?

Most papers dealing with individual overeducation risks focus on labour supply characteristics and workers’ behaviour. On the other hand, only few studies consider labour demand characteristics and technological change. In this paper we analyse the influence of both demand and supply factors on educational mismatch in a set of 10 European countries. Our hypothesis, confirmed by results obtained using ordered probit model with sample selection, is that demand factors generally play a major role in reducing educational mismatch in technologically more advanced countries, whereas supply factors are more important in countries that are lagging behind in the international division of labour. At the same time, important cross-country and gender differences have been identified in how the demand/supply factors operate. All this calls for the fine-tuning of policies intended to tackle the problem of educational mismatch.     

The effects of rising labour costs on global supply chains: the case of China’s cotton yarn industry

Rapid economic growth in China and India has resulted in rapidly rising labour costs in those countries. In this study a Muth-type model is used to assess the potential effects of this development on global supply chains using China’s cotton yarn industry as a case study. The model considers i) product differentiation at the yarn level; ii) imperfect competition in the markets for cotton yarn and raw cotton fibre, iii) input substitution between raw cotton fibre, labour, and capital; and iv) offsetting increases in the demand for cotton yarn caused by rising consumer income. Results suggest the effects of rising labour costs on the supply chain are modest, and easily swamped or obscured by the effects of rising income. Increases in industry market power (both oligopoly and oligopsony) have the same effect on the supply chain as increases in labour costs, raising prices to consumers of cotton yarn, and lowering prices to input suppliers, including foreign suppliers of raw cotton fibre. The combined effects of increases in labour costs and income have increased the factor shares for labour and to a lesser extent capital at the expense of raw cotton fibre.     

Canadian contributions to family economics

Canadian scholars have made substantial contributions to the relatively new field of family economics. These include new models of how men and women match in marriage markets, and of how decisions are made in multi‐person households. Several were early contributors to the literature on married women's labour supply and labour supply in a family context, and helped to develop empirical methods in this area. A particular focus has been on the impacts of policy‐relevant parameters, such childcare costs, on family labour supply and child well‐being. New work on child development, the impact of early life conditions, and the processes of intergenerational transmission also highlight the importance of family context in determining economic well‐being.     

Skilled–unskilled wage inequality,nontraded good and endogenous supply of skilled labour: A theoretical analysis

The paper develops a static four sector competitive general equilibrium model of a small open economy in which skilled labour is endogenously produced by the education sector and is mobile between a traded good sector and a nontraded good sector. Capital is also perfectly mobile among the education sector, skilled labour using traded good sector and the nontraded good sector. However, land and unskilled labour are specific to another traded good sector. We analyse the effects of change in different factor endowments and reduction in tariff rate on skilled–unskilled wage inequality. We find that the effect of a change in different parameters on wage inequality depends on the factor intensity ranking between two skilled labour using sectors and on the relative strength of the marginal effects on demand for and supply of nontraded final good. We also analyse the effects of changes in different parameters on the supply of skilled labour.     

The predictive value of subjective labour supply data: A partial-adjustment model with measurement error

This paper tests the predictive value of subjective labour supply data for adjustments in working hours over time. The idea is that if subjective labour supply data help to predict working hours, the subjective data must contain at least some information on individual labour supply preferences. In this paper, I formulate a partial-adjustment model that allows for measurement error in the observed variables. Applying estimation methods that are developed for dynamic panel data models, I find evidence for a predictive power of subjective labour supply data concerning desired working hours in the German Socio-Economic Panel 1988–1995.I wish to thank John Haisken-DeNew, Astrid Kunze, Markus Pannenberg, Winfried Pohlmeier, Frank Windmeijer, Rainer Winkelmann, my former colleagues at IZA and two anonymous referees for their valuable comments. The author gratefully acknowledges DIW for providing the data.First version received: December 2001/Final version received: December 2003     

Income splitting, specialization, and intra-family distribution

Abstract Income splitting for tax purposes results in more specialization of wives, but does this in turn generate more gender inequality? In my dynamic bargaining model with a divorce threatpoint, I find that who controls the couple's labour supply plays a crucial role in establishing this link. If spouses choose their labour supply non‐cooperatively, only the husband's increase – but not her own decrease – in labour supply introduces a negative term in the wife's change in welfare. If the wife does not control her own labour supply, a decrease in her own labour supply introduces an additional negative term.     

The impact of taxes on female labour supply

There is little agreement in economics on the factors influencing labour supply and hence on the impact of taxes. Within the marginal model, real wages and incomes are directing people's labour market behaviour independent of time and space, whereas the human resources approach takes account of the social environment and past behaviour. Even if strong assumptions are made, the neoclassical theory cannot predict the outcome of a wage increase. The labour supply response depends on the relative strengths of the substitution and the income effect. Since nonparticipation in the labour market is explained by a reservation wage being higher than the market wage, this is the only situation in which neoclassical theory would predict a rise in labour force participation with a wage increase. This case occured in a ‘natural experiment’ in Sweden. The Swedish tax system changed in 1971 from joint to separate taxation of spouses resulting in a substantial increase in the net wage of married women. This article investigates the impact of the change in the Swedish tax system on female labour force participation, concluding that it cannot explain the substantial rise in the participation rates of Swedish women. This is a significant result, questioning standard neoclassical theory and supporting the more institutional views of human labour market behaviour. That is that time and space as well as the social environment are important when analyzing labour supply. This will have consequences for international comparisons. Only factors which explain developments within one country might be relevant for explaining international differences, e.g. in labour force participation.     

The effect of universal child benefits on labour supply

Using a difference‐in‐differences estimator, I find the Canadian Universal Child Care Benefit has significant negative income effects on the labour supply of married individuals. The likelihood of lower‐educated mothers to participate in the labour force is reduced 3.2 percentage points when receiving the benefit. Median hours worked per week among lower‐educated mothers is reduced by 1.9 hours. The effects on higher‐educated mothers are substantial, with median hours worked among higher‐educated mothers reduced by nearly one hour per week. For men, the evidence suggests small but significant income effects on labour supply, consistent with the literature on labour supply elasticities.     

Economic status of households and labour supply to market and non-market activities mdash; some results from a poor rural economy

Assuming a given underlying utility structure for all households, we have demonstrated that the differential labour supply behaviour among household categories results owing to the different sets of constraints they face depending on their economic status and asset ownership. Using the criteria implied by the theoretical model four household gorups are defined. The labour supply functions estimated for these four groups support the theoretical result of significantly different supply behaviour. The empirical exercise, as expected, indicates that the labour supply decision of the subsistence group is guided by their need to achieve the minimum level of consumption while the middle-income households, who do not have enough non-labour income to meet their minimum subsistence need, tend to work longer hours in market activities than the workers from high-income households. However, market labour supply by high-income households is found to be relatively more sensitive to changes in the wage rate. The behaviour of the household groups differ so significantly that if an aggregate model is estimated ignoring inter-household differences, the predicted hours will grossly over-estimate labour supply to market activities.