WAGNER'S LAW: AN ECONOMETRIC TEST FOR SOUTH AFRICA, 1960‐2006

The main objective for this paper is to test Wagner's law by analysing the causal relationships between real government expenditure and real income for South Africa for the period 1960‐2006. The paper tests the long‐run relationship between the two variables using the autoregressive distributive lag approach to cointegration suggested by Pesaran et al. We use the Granger non‐causality test procedure developed by Toda and Yamamoto, which uses a vector autoregression model to test for the causal link between the two. Evidence of cointegration is sufficient to establish a long‐run relationship between government expenditure and income. However, support for Wagner's law would require unidirectional causality from income to government expenditure. Therefore, cointegration should be seen as a necessary condition for Wagner's law, but not sufficient. This research does find a long‐run relationship between real per capita government expenditure and real per capita income. Results for the short‐run causality find bidirectional causality. On the basis of empirical results in this paper, one may tentatively conclude that Wagner's law finds no support in South Africa.     

Estimating the future health care cost of population aging in South Africa

ABSTRACT

This paper analyses the relationship between health care expenditure and population aging in South Africa using yearly data from 1983 to 2015. Empirical evidence from an Autoregressive Distributed Lag approach to cointegration indicates that old dependency and life expectancy are major drivers of public health expenditure in South Africa besides the income. Particularly, when structural breaks are controlled for, income exhibits a long-term elasticity with respect to health spending greater than unity; suggesting that South African public health care has become a luxury good over time. Interestingly, South African public health spending is found to be responsive to demographic development only in the long run. This is consistent with the micro evidence that health expenditure increases with individual age with significant impacts in the long term. Finally, using economic and demographic projections statistics, we find that public health expenditure could roughly double in the next fifteen years ceteris paribus.     

ON THE CYCLICALITY OF SOUTH AFRICAN FISCAL POLICY

This paper examines the cyclicality of government revenue, spending and the key fiscal balances in South Africa during 1972‐2001. The results suggest that while government revenues were largely acyclical, government spending appears to have been predominantly counter‐cyclical, in line with the recommendations of neoclassical analysis. In addition, countercyclical government spending appears to have translated into a countercyclical policy stance overall. This finding contrasts markedly with the results from other empirical studies of South Africa and other emerging market and developing economies, which typically indicate procyclical fiscal policy.     

Past and future of the labor force in emerging Asian economies

In this paper we investigate the determinants of past changes in the labor force of 12 emerging Asian countries, and attempt to make projections of the labor force in those countries for the period 2010–2030. Results from our regression analysis of the labor force indicate that the wage earnings elasticity of labor supply is negative, albeit insignificant, for men and significantly positive for women, and it has a significantly positive association with educational level and a negative one with age. We also find that per capita income shows a negative relationship with the labor force in general for younger age groups and older age groups, and more capital-intensive countries have smaller female labor force. Using extrapolation, the paper predicts that the labor force will increase in all 12 countries during the first two decades of the period 2010–2030, but will eventually decline in China, Hong Kong, Singapore, South Korea, and Taiwan. The paper also makes projections of the unemployment rate and the average working hours in those countries.     

Non‐compliance with the Minimum Wage Law when Completely New Minimum Wage Laws Are Established: The Case of South Africa

Abstract: Using the case of South Africa, we study compliance with the minimum wage law when completely new minimum wage levels are established. By even the best estimate, the compliance rate in South Africa would not exceed 40 per cent for the agricultural sector and 30 per cent for the domestic worker sector. The compliance rates by subpopulation groups reveal that the compliance rate is low where the cost to comply with the minimum wage law is high, implying that government inspections are not done where they are likely to have the highest payoff. However, if the government tries to enforce the policy more strictly, the poor/less skilled would be adversely affected.     

Labour unions and wage inequality among African men in South Africa

One Achilles' heel of post-Apartheid South Africa is the growing intra-racial income inequality, particularly among Africans. This paper examines the role of labour unions in explaining this phenomenon among African men given that labour markets are at the core of income inequality in South Africa. Using cross-sectional data drawn from Labour Force Surveys for 2001–10, we find a monotonically declining union wage premium. Further, our results indicate that unions have both compressionary and disequalising effects on wages. The disequalising effect dominates the compressionary effect, suggesting that unions have a net effect of increasing wage inequality among African men in South Africa. This finding implies that there is scope for unions to reduce inequality through initiatives that promote wage compression.     

是FDI导致中国经济“冰火两重天”?——基于省级面板数据的检验

FDI被认为是经济高速增长与居民消费严重不足"冰火两重天"式奇特现象的重要答案。本文使用1990～2009年中国省级面板数据进行的实证检验表明,FDI推动中国经济增长的同时也提高了居民人均消费支出,其影响的主要渠道可能是增加当地居民收入和地方政府社保支出份额。文章设想的FDI负向影响居民人均消费支出的社会保障支出份额效应虽然有迹象表明是存在的,但其效应被FDI增加地方政府社保支出份额效应所抵消。文章设想的FDI负向影响居民人均消费支出的收入不平等效应则被证实是不存在的。在此基础上本文得出结论,中国经济"冰火两重天"现象的原因可能需要从经济体系内部寻找,强势政府和要素市场扭曲可能才是根源,FDI流入一定程度上还修正了这种制度的缺陷。     

Asset stocks and flows in macroeconomic theory: Resolving the ambiguities in the general IS-LM model

Summary In this paper we have critically examined the macroeconomic model developed by Benavie as a generalization of the beginning-of-period model of Tobin and of Patinkin's end-of-period approach. We have focused our attention on the ambiguous effects on income of government spending changes and tax changes that result from this model. Our conclusions are twofold. First, with respect to the effects of government spending on equilibrium income, we find that, if the demand function for money is decreasing in the interest rate, then the effect of government spending onY is unambiguously positive for any value of. The ambiguity discovered by Benavie is a result of his implicit assumption that money has the characteristics of a Giffen good. Second, in the case of the tax ambiguity, we find the source of the problem to be in the particular formulation of Benavie's asset demand functions. Benavie specifies his asset demand functions in such a way that tax changes impinge directly on these demands. If both stock and flow demands depend upon gross income and not taxes, then there isno ambiguity with respect to tax changes regardless of the value of. However, if both stock and flow demands depend upon disposable income, and hence taxes, the effect of tax changes on equilibrium income becomes ambiguous, but again independently of the value of.     

Income Convergence in African Countries: Evidence from a Stationary Test With Multiple Structural Breaks

This paper examines the catching‐up (stochastic convergence in real per capita income) hypothesis for 52 African countries with respect to the USA. over the 1969‐2011 period, using a highly flexible stationarity test. The empirical results show (i) that all African countries experienced at least one break, switching between catching‐up and divergence paths during the sample period; (ii) that structural breaks tend to coincide with political instability, trade liberalisation policies and terms of trade shocks; (iii) that among the 52 African countries studied, only five lie on the catching‐up path, while the remaining 47 diverge from the USA. Our results show that the economic performance of African countries fall far behind those of the USA and that the economic growth tragedy of Africa continues.     

Government spending and the distribution of economic growth

In the United States, total government spending, and especially government social spending, has increased greatly over the last 50 years. What effect this has had on economic growth is a subject of intense debate among politicians, policymakers, and economists. However, there has been less attention paid to the distributional effects of government spending even though economic inequality has grown greatly over the last generation and much social spending is at least indirectly intended to reduce inequality. The effects of government social spending in the United States on growth in family income at deciles of the income distribution were estimated. The results suggested that social spending but not non‐social spending was likely to increase growth in family income per capita measured over 10‐year intervals. The largest effects of social spending were for deciles below the median income. At no point in the distribution does social spending have a negative effect.     

政府支出与经济波动——基于省级面板数据的实证分析

政府支出能否起到稳定经济增长的作用是一个值得研究的重要问题。使用1987-2013年30个省市自治区的面板数据,文章考察了政府支出对我国经济波动的影响。在考虑政府支出规模的内生性后,2SLS估计结果发现政府支出对经济波动的影响具有两面性。一方面政府支出规模主要发挥了财政自动稳定器作用,因而减少了经济波动;另一方面,政府支出变动对总量产出冲击较大,从而增加了经济波动。进一步控制了贸易开放、通货膨胀、货币政策冲击、金融发展和产业结构等因素,估计结果表现出较好的稳健性。研究结论意味着,在保持经济稳定增长方面,需要权衡政府支出规模与政府支出变动对经济波动的影响。     

SYNCHRONISATION BETWEEN SOUTH AFRICA AND THE U.S.: A STRUCTURAL DYNAMIC FACTOR ANALYSIS

This paper studies the synchronisation of the South African and the US cycles and transmission channels through which supply and demand shocks from the US affect economic activity in South Africa in a structural dynamic factor model framework. We find, using the full-sample period, US supply shocks are transmitted to South Africa through business confidence and imports of goods and services; while US demand shocks are transmitted via interest rates, stock prices, exports of goods and services, and real effective exchange rates. Second, there is a decrease in integration over time translated by a drop in synchronisation of cycles. The impact of an increase in comovement of GDP is outweighed by the structural reforms initiated by the government after the end of apartheid. Finally, the idiosyncratic component still plays an important role in the South African economy.     

Health Expenditures and Health Outcomes in Africa*

Abstract: This paper provides econometric evidence linking African countries’ per capita total as well as government health expenditures and per capita income to two health outcomes: infant mortality and under‐five mortality. This relationship is examined using data from 47 African countries between 1999 and 2004. Health expenditures have a statistically significant negative effect on infant and under‐five mortality rates. The magnitude of our elasticity estimates are in consonance to those reported in the literature. For African countries, our results imply that total health expenditures (as well as the public component) are certainly important contributors to health outcomes. In addition, we find that both infant and under‐five mortality are positively and significantly associated with sub‐Saharan Africa. The reverse is true for North Africa. While ethnolinguistic fractionalization and HIV prevalence positively and significantly affect the health outcomes, higher numbers of physicians and female literacy significantly reduce these health outcomes. These results have important implications for attaining the targets envisioned by the Millennium Development Goals. The data implications are also discussed.     

Wages and Wage Inequality in South Africa 1994–2011: Part 2 – Inequality Measurement and Trends

We analyse the long‐term trends in wage inequality in South Africa, using household survey data. We show that the trends in household income inequality are largely driven by changes in wage inequality. Given the detailed nature of our series we show that measurement issues and breaks in the series need to be dealt with in order to draw robust conclusions from the data. Most standard inequality measures show that wage inequality has increased over the period. Nevertheless the choice of measure matters, because there are different trends in different parts of the distribution. It appears that the distribution below the median has become more compressed, while the top of the wage distribution has moved away from the median. The inequality in the labour market translates into even higher inequality in society given that high earners tend to live together with other high earners while low wage individuals often end up sharing their incomes with the unemployed. Furthermore there are many South Africans with access to no wage income. Given the trends analysed here it is not surprising that overall inequality in South Africa has not come down or has even increased since the end of apartheid.     

Wages and Wage Inequality in South Africa 1994–2011: Part 1 – Wage Measurement and Trends

We analyse the long‐term trends in wage inequality in South Africa, using household survey data. We show that the trends in household income inequality are largely driven by changes in wage inequality. Given the detailed nature of our series we show that measurement issues and breaks in the series need to be dealt with in order to draw robust conclusions from the data. Most standard inequality measures show that wage inequality has increased over the period. Nevertheless the choice of measure matters, because there are different trends in different parts of the distribution. It appears that the distribution below the median has become more compressed, while the top of the wage distribution has moved away from the median. The inequality in the labour market translates into even higher inequality in society given that high earners tend to live together with other high earners while low wage individuals often end up sharing their incomes with the unemployed. Furthermore there are many South Africans with access to no wage income. Given the trends analysed here it is not surprising that overall inequality in South Africa has not come down or has even increased since the end of apartheid.     

Quantifying Inefficient Expenditure in Local Government: A Free Disposable Hull Analysis of a Sample of South African Municipalities

Municipalities in South Africa play a pivotal role in the provision of basic services to communities. However, local government as a sphere in the country is notorious for its spending inefficiency, which is cited as a major factor in service delivery failure. This paper quantifies inefficient expenditure at the local government level by estimating efficiency scores for a sample of 129 municipalities in South Africa from the 2005/2006 to the 2009/2010 municipal financial years. In essence, this paper examines the technical efficiency of municipalities by using the nonparametric free disposable hull approach and finds that 10 municipalities are constantly efficient over the period. On average, input efficiency scores range from 42% to 46%, suggesting that, in general, municipalities can achieve the same output levels with over 50% less resources. Quantitatively for the 2009/2010 financial year, this amounts to a total of R80 billion being spent inefficiently, which equates to R220 million being “wasted” per day.     

Fiscal stimulus and labor market dynamics in Japan

The paper studies the effects of fiscal expansion on the Japanese labor market. First, using a structural VAR model, we find that the unemployment rate falls and employment rises following an increase in government spending. We also find that fiscal expansion affects flows in and out of unemployment. While an increase in government spending increases the job-finding rate, it reduces the separation rate. We then incorporate search and matching frictions into a standard dynamic general equilibrium model, and study whether the model can explain what we observed in data. While the model fails to predict the exact size of the impact of government spending shocks on the Japanese labor market variables, it can consistently capture the empirical pattern of responses of labor market variables to shocks.     

Economic Convergence in the African Continent: Closing the Gap

The paper attempts to analyse the conditional β‐convergence and its sources for 32 African countries over the period 1960‐2008. The augmented Solow model with both gross domestic product (GDP) per worker and per capita income is estimated using the dynamic system generalized methods of moments (GMM) technique with the panel data. This is the first study on the sources of conditional β‐convergence for African countries. According to the results of the augmented Solow model, income convergence rates are lower than those of GDP per worker. Moreover, total factor productivity convergence, human capital convergence and capital labour convergence are contributing towards the convergence of GDP per worker in Africa. This means that growth in the poorest African countries is being augmented by “catch‐up factor,” which is good news for them. However, convergence in terms of GDP per worker is not being fully translated into income per capita convergence. The demographic structure in the African continent with its record of persistent population growth has played an important role in lowering the income convergence of its countries.     

The consequences of health shocks on households: Evidence from China

Unexpected health shocks may bring catastrophic consequences for households. This paper examines the effect of unexpected adverse health shocks on household members' physical and mental health, labor supply, household income and asset, and health behaviors in China by analyzing two nationally representative datasets and adopting a difference-in-differences method augmented with coarsened exact matching. We find that an unexpected health shock results in a discounted out-of-pocket medical expenditure of 16,943 RMB (US$ 2647) over five years for an average household, a reduction of household income per capita of 841 RMB per year (US$ 131, or 6.0% of household annual income per capita), and a loss of net household asset per capita of 13,635 RMB (US$ 2130, or 9.7% of household asset per capita). It raises the probability of an average household applying for public poverty relief allowance by 2.8 percentage points. In addition, we document a strong intra-household spillover effect of health shocks on mental health and health behaviors. A simple back-of-envelope calculation shows that the health shock induces a private cost of 34,966 RMB (US$ 5463) over 5 years for an average household, and incurs a social financial burden of 6066 RMB (US$ 948) in 5 years per household in medical reimbursement and social welfare transfers. At a national scale, the total social burden of health shocks from cardiovascular and cerebrovascular diseases amounts to 1.1 trillion RMB (US$ 172.1 billion) over 5 years.     

改革开放以来我国GDP变动与居民收入变动关系实证分析

对改革开放以来我国居民收入与GDP之间的变动关系进行研究,选取1978—2011年我国人均GDP、城镇居民家庭人均可支配收入、农村居民家庭人均总收入数据进行脉冲响应函数和方差分解,发现居民收入的变动不会导致GDP的大幅变动,但是GDP变动却可以导致居民收入的较大波动,且人均GDP对居民收入有很大的影响作用。