非正规经济与上海市非正规就业初探

一、非正规经济的内涵　　 1 概念的提出“非正规经济”(也称非正式经济)的概念是由经济人类学家哈特首先提出的。他在对非洲一些国家的首都经济进行实证研究时 ,发现得到的结论与西方经济发展理论有明显的矛盾 ,于是从基于货币工资的雇佣和与谋生相关的自我雇佣的角度提出了“非正规经济”的概念。虽然在非正规经济的研究中 ,发展中国家和发达国家的学者都试图在概念界定上达成共识 ,以促进国际间的交流 ,但由于研究角度、研究背景、研究目的以及意识形态不同 ,不同国家、不同领域的学者仍很难对“非正规经济”的概念达成统一的认识。发达…     

Can a minimum wage increase employment and reduce prices in a neoclassical perfect information economy?

This paper investigates the possibility that the imposition of a minimum wage increases employment in the affected sector, measured in terms of hours of work, and lowers product prices. Unlike related prior theoretical research, I consider a neoclassical perfect information economy. Both labor and product markets are assumed to be perfectly competitive. Workers choose the number of hours of work and their effort level. Workers can potentially, but not necessarily, differ in their preferences over income, leisure, and effort. Effort is perfectly observable by the employers. The general framework that highlights the channels through which a minimum wage can increase employment and reduce prices is introduced and necessary and sufficient conditions derived. The paper also develops a number of comparative statics and some illustrative examples. The results provide a simple theoretical foundation that explains some recent findings of the empirical literature on minimum wages. Auxiliary results help explain the effects of minimum wage on the entire wage distribution in a way that is consistent with empirical findings. Finally, welfare analysis shows that worker welfare and employment tend to go in opposite directions; in particular, if employment increases after the imposition of the minimum wage, worker welfare will be reduced, though not necessarily vice versa (the opposite is true for consumer welfare). Strikingly, if a minimum wage increases worker welfare, the chief beneficiaries are not the affected workers but those with incomes that exceed the minimum wage.     

Cointegration,long-run structural modelling and weak exogeneity: Two models of the UK economy

Cointegration ideas as introduced by Granger in 1981 are commonly embodied in empirical macroeconomic modelling through the vector error correction model (VECM). It has become common practice in these models to treat some variables as weakly exogenous, resulting in conditional VECMs. This paper studies the consequences of different approaches to weak exogeneity for the dynamic properties of such models, in the context of two models of the UK economy, one a national-economy model, the other the UK submodel of a global model. Impulse response and common trend analyses are shown to be sensitive to these assumptions and other specification choices.     

Investment,stability and taxation in a long-run macroeconomic model

This paper investigates, for a one-sector model in which the, consumer-investor's preferences are randomly changing, the relationship between an economy's size and variability. It is observed that means and variances of the stationary probability distributions on capital stock and output move together for given parameter changes unless some specific form of government intervention is introduced.     

Purchasing power parity as a long-run relation

Dickey–Fuller and Stock–Watson tests of purchasing power parity (PPP) as a long-run proposition are provided within the cointegration framework proposed by Granger. Since different countries use different weights to construct price indices, the traditional constraint that the coefficients on the price indices should be unity in the log-linear PPP relation is relaxed. The absence of a general PPP relation cannot be rejected. At most, a PPP relation is indicated in five out of fifteen country pairs that are examined. Even if a long-run PPP relation exists, it is not found to be useful in predicting future nominal exchange rates, which is consistent with efficient speculative markets.     

Efficient employment of cohorts of labor in the U.S. economy: An illustration of a method

This paper presents a model for the analysis of efficient labor force participation in the U.S. economy. Ridge regression estimates of the elasticities of cohorts of labor, classified by sex and occupation, are used in conjunction with wage data to illustrate the derivation of efficient allocation of labor cohorts in five economic sectors. These efficient constructs are compared with actual census data for 1960 and 1970. The results, while tentative, show a trend toward more efficient utilization of labor and greater participation by women in the work force.     

On the long-run relationship between inflation and output in a spatial overlapping generations model

The paper builds a model that features spatial differentiation of markets, and then uses it to study, first, the relationship between inflation and the steady-state level of output, and second, the relationship between inflation and the steady-state distribution of output across the economy. A steady-state of the model entails a stationary distribution of money across the locations of the economy. With all else held fixed, a change in the rate of money-growth induces a change in the distribution of money, which leads to a change in labour supply and production throughout the economy. Thus the distribution of money provides a channel through which a change in monetary policy affects real economic activity.     

A hump-shaped transitional growth path as a general pattern in long-run development

Long-run development is defined as the income transition between the traditional and the modern steady state, in which the speed of the transition is low near the two steady states but high and volatile in between them. This transition implies a hump-shaped relation between the level of per capita income and its growth rate. A hump-shaped growth-income path can be simulated with a two-sector growth model, in which the traditional sector is gradually replaced by the modern sector. Kernel regressions reveal a noisy but robust hump-shaped relation between the growth rate and the level of per capita income in stacked cross-country panel data.     

Algorithmic management and app‐work in the gig economy: A research agenda for employment relations and HRM

Current understanding of what constitutes work in the growing gig economy is heavily conflated, ranging from conceptualisations of independent contracting to other forms of contingent labour. This article calls for a move away from problematic aggregations by proposing a classification of gig work into three variants, all based strongly upon key technological features: app‐work, crowdwork, and capital platform work. Focusing specifically on the app‐work variant, this article's more delineated focus on the textured dimensions of this work proposes new lines of enquiry into employment relationships and human resource management. Examining the crucial role of algorithmic management, we critically discuss the impact of this novel mediation tool used by gig organisations for the nature of employment relations within app‐work, work assignment processes, and performance management. In so doing, we propose a series of research questions that can serve as a guide for future research in this increasingly important field.     

The long-run effects of a residential property tax and local public services

The long-run effects of a residential property tax and local public services are analyzed in the context of an urban spatial model. An endogenous labor market allows the local wage rate to adjust, in conjunction with residential and business land prices, in response to local fiscal changes.     

Measuring state dependence in individual poverty histories when there is feedback to employment status and household composition

This paper argues that the assumption of strict exogeneity, which is usually invoked in estimating models of state dependence with unobserved heterogeneity, is violated in the poverty context as important variables determining contemporaneous poverty status, in particular employment status and household composition, are likely to be influenced by past poverty outcomes. Therefore, a model of state dependence is developed that explicitly allows for possible feedback effects from past poverty to future employment and household composition outcomes. Empirical results based on data from the German Socio‐Economic Panel (GSOEP) suggest that there are indeed such feedback effects and that failure to take them into account may lead to biased estimates of the state dependence effect. Copyright © 2009 John Wiley & Sons, Ltd.     

Heterogeneity and long-run changes in aggregate hours and the labor wedge

From 1961 to 2007, U.S. aggregate hours worked increased and the labor wedge—measured as the discrepancy between a representative household׳s marginal rate of substitution and the marginal product of labor—declined substantially. The labor wedge is negatively related to hours and is often attributed to labor income taxes. However, U.S. labor income taxes increased since 1961. We examine a model with gender and marital status heterogeneity which accounts for the trends in the U.S. hours and the labor wedge. Apart from taxes, the model׳s labor wedge reflects non-distortionary cross-sectional differences in households׳ hours worked and productivity. We provide evidence that household heterogeneity is important for long-run changes in labor wedges and hours in other OECD economies.     

The topography of metropolitan employment: Identifying centers of employment in a polycentric urban area

While it is well recognized that US metropolitan areas are polycentric, there is little consensus as to the appropriate method for identifying concentrations of employment within them. Existing methods suffer from strong assumptions about parametric form, misspecification, or reliance on local knowledge to calibrate model parameters. This paper introduces a new nonparametric method for identifying subcenters. Results indicate that this, more flexible, nonparametric approach yields greater accuracy with regard to both urban and suburban centers compared with other approaches. This approach should provide better data for the numerous topics that depend on the spatial accounting of employment within metropolitan areas.     

Money and economic development: A long-run perspective

This article explores the association between money and long-run economic growth in a panel of 27 countries over 200 years. It presents evidence of a complementarity between freedom and decentralisation of the monetary system in terms of their contribution to growth in GDP per capita. The significant and positive association between freedom and economic growth is found to be significantly stronger in a decentralised (market-based) than in a centralised (government-controlled) monetary system. For the average level of freedom across the 27 countries today, shifting from a centralised to a decentralised monetary system is predicted to almost double growth rates.     

Charity and redistributive taxation in a unionized economy

European economies are characterized by unionized labor markets and governmental redistribution of income. This paper studies a model where those two features are combined with the possibility for individuals to make charitable contributions to the poor. The model exhibits equilibrium unemployment that increases with the degree of altruism. It is shown that a more progressive income tax can both reduce the unemployment rate and improve the public budget. These results are driven by charity increasing wage pressure and the altruistic rich failing to internalize the effect of their donations on the wage setting behavior of the unions.     

城市经济发展中特色经济与集群经济的关系--兼论城市园区经济建设

特色经济与集群经济现在是城市经济发展过程中两个彰显的概念,二者从不同角度阐释了城市经济发展的基本要求.特色经济反映的是城市经济的质,而集群经济反映的是城市经济的量.没有特色的城市经济缺乏活力和竞争力,没有集群的特色经济则对城市经济的带动作用就微乎其微.二者的有机统一才是最具活力和竞争力的城市经济单元.     

Alcohol abuse and employment: a second look

Based on data from the 1988 Alcohol Supplement of the National Health Interview Survey, Mullahy and Sindelar ( 1996 ) (M&S) find, for both men and women, that alcohol abuse results in reduced employment and increased unemployment. The estimates from which they drew these inferences were obtained via the instrumental variables (IV) method, which was implemented in order to account for the potential endogeneity of problem drinking. Though these IV estimates qualitatively supported the prior expectation that problem drinking damages individuals' labour market prospects, they were not found to be statistically significant. The present paper revisits this research and offers a new estimation method which, in addition to accounting for endogeneity, explicitly allows for the inherent non‐linearity of the underlying regression structure. The new method is applied to the same data and variable specifications as those used by M&S for the male subpopulation. Consistent with their results, problem drinking is found to have a positive effect on the probability of unemployment and negative effect on the likelihood of being employed. Unlike their result, however, the latter estimate is statistically significant. An appealing feature of the new method is that it accommodates the likely possibility that alcohol abuse effects are heterogeneous with respect to the observed and unobserved characteristics of individuals in the population. To illustrate this fact, abuse effects are computed for two widely differing subgroups of the population. The large differential between the estimated effects for these two subpopulations demonstrates the potential importance of accounting for heterogeneity. Copyright © 2002 John Wiley & Sons, Ltd.     

Wage bargaining,productivity growth and long-run industry structure

This paper studies the innovation dynamics of an oligopolistic industry. The firms compete not only in the output market but also by engaging in productivity enhancing innovations to reduce labor costs. Rent sharing may generate productivity dependent wage differentials. Productivity growth creates intertemporal spillover effects, which affect the incentives for innovation at subsequent dates. Over time the industry equilibrium approaches a steady state. The paper characterizes the evolution of the industry's innovation behavior and its market structure on the adjustment path.