Entrepreneurship,Financiership, and Selection*

We develop an equilibrium model of the market for entrepreneurial finance, in which all agents have some personal wealth and a project whose quality is their private information. All agents choose whether to invest either as entrepreneurs or financiers, or to invest in storage technology. We find that a binding economy‐level wealth constraint, which renders credit scarce, can create advantageous selection, where productive agents become entrepreneurs and unproductive agents become their financiers. If funding is easier to obtain, entrepreneurship also attracts unproductive agents. In our model, individual wealth and entrepreneurship are positively (negatively) correlated if financial market participation is complete (incomplete).     

On the optimality of a minimum wage: New insights from optimal tax theory

We build a theoretical model to study whether a minimum wage can be welfare-improving if it is implemented in conjunction with an optimized nonlinear income tax. We consider this issue in a framework where search frictions on the labor market generate unemployment. Workers differ in productivity. The government does not observe workers' productivity but only their wages. Hence, the redistributive policy solves an adverse selection problem. We show that a minimum wage is optimal if the bargaining power of the workers is relatively low. However, if the government controls the bargaining power, then it is preferable to set a sufficiently high bargaining power.     

Adverse selection in credit markets and regressive profit taxation

In many countries, taxes on businesses are less progressive than labor income taxes. This paper provides a justification for this pattern based on adverse selection that entrepreneurs face in credit markets. Individuals choose between becoming entrepreneurs or workers and differ in their skill in both of these occupations. I find that endogenous cross-subsidization in the credit market equilibrium results in excessive (insufficient) entry of low-skilled (high-skilled) agents into entrepreneurship. This gives rise to a corrective role for differential taxation of entrepreneurial profits and labor income. In particular, a profit tax that is regressive relative to taxes on labor income restores the efficient occupational choice.     

Training, Wages, and Sample Selection: Estimating Sharp Bounds on Treatment Effects

This paper empirically assesses the wage effects of the Job Corps program, one of the largest federally funded job training programs in the U.S. Even with the aid of a randomized experiment, the impact of a training program on wages is difficult to study because of sample selection, a pervasive problem in applied microeconometric research. Wage rates are only observed for those who are employed, and employment status itself may be affected by the training program. This paper develops an intuitive trimming procedure for bounding average treatment effects in the presence of sample selection. In contrast to existing methods, the procedure requires neither exclusion restrictions nor a bounded support for the outcome of interest. Identification results, estimators, and their asymptotic distribution are presented. The bounds suggest that the program raised wages, consistent with the notion that the Job Corps raises earnings by increasing human capital, rather than solely through encouraging work. The estimator is generally applicable to typical treatment evaluation problems in which there is nonrandom sample selection/attrition.     

Redistribution as a selection device

This paper studies the role of the wealth distribution for the market selection of entrepreneurs when agents differ in talent. It argues that the redistribution of initial endowments can increase an economy's surplus because more talented individuals get credit for their risky investment projects. Moreover, the redistribution of initial endowments may lead to a Pareto-improvement although all agents are non-satiable. An agent's entrepreneurial ability is his private information and there is moral hazard in production. I find conditions such that unproductive rich entrepreneurs crowd out productive poor ones on the capital market. Then redistribution of initial endowments may lead to a new equilibrium where market participants are better informed about the entrepreneurs’ ability. The new equilibrium is characterized by (i) the selection of better entrepreneurs, (ii) a higher riskless rate of return on capital, (iii) lower repayments of successful entrepreneurs to their creditors and (iv) the fact that all agents are better off.     

Financial markets,the structure of long-term investments and labour income risks

The paper develops a model to analyse the feedback between financial markets, long-term capital investments and the risk of labour incomes. We study a situation where firms are owned by entrepreneurs, who are able to share and diversify their income risk by trading on financial markets. Workers, in contrast, cannot short-sell the flows from future labour endowments and thus do not have the same opportunities. We derive two central results. Firstly, even if financial markets offer perfect risk-sharing opportunities for entrepreneurs, the participation restriction for labour incomes leads to a constrained inefficient market allocation. The constrained inefficiency arises because the effect of long-term investments on the risk of wages is not internalized by state prices. Secondly, we show that in general it is not true that workers indirectly benefit when we go from a situation with no financial markets to a situation with perfect financial markets for entrepreneurs but restricted participation for workers. The results suggest that a policy solution might require either to close some financial markets or to create new ones. We argue why there is a strong case for the creation of new markets rather than for closing existing ones.     

General training by firms, apprentice contracts, and public policy

Workers will not pay for general on-the-job training if contracts are not enforceable. Firms may if there are mobility frictions. Private information about worker productivities, however, prevents workers who quit receiving their marginal products elsewhere. Their new employers then receive external benefits from their training. In this paper, training firms increase profits by offering apprenticeships which commit firms to high wages for those trainees retained on completion. At these high wages, only good workers are retained. This signals their productivity and reduces the external benefits if they subsequently quit. Regulation of apprenticeship length (a historically important feature) enhances efficiency. Appropriate subsidies enhance it further.     

Entrepreneurship and organization design

We model entrepreneurship and the emergence of firms as an outcome of simultaneous bidding for labor services among heterogeneous agents. What distinguishes our approach from prior work is that occupational choice and job matching are determined simultaneously, so that the opportunity costs of entrepreneurs are accounted for. Those who are relatively unmanageable, while possibly excellent managers themselves, become entrepreneurs. Entrepreneurs compete and create value by building efficient organizations and offering potentially well-paid jobs to others. While the entry of an additional entrepreneur typically reduces some individual wages, we show that it always raises the average wage and depresses the average income of incumbent entrepreneurs. This result may help explain the empirically low returns to entrepreneurship.     

Migration,self-selection and earnings in Philippine rural communities

"Estimated returns to schooling investments can be misleading if migration causes significant shifts in population distribution across time. Data gathered in rural Philippine communities show that the more educated and experienced individuals are more likely to outmigrate, causing a sample selection bias in the estimation of wage equations. The observed wages were then lower than the conditional population mean of an entire cohort residing originally in the area. Controlling for self-selection, the wage returns to schooling and experience were higher, Finally, the sample selectivity variable accounts substantially for the difference in the wages of men and women."     

Intermediation by aid agencies

This paper models aid agencies as financial intermediaries that do not make a financial return to depositors, whose concern is to transfer resources to investor-beneficiaries. This leads to a problem of verifying that the agency is using donations as intended. One solution to this problem is for an agency to employ altruistic workers at below-market wages: altruistic workers, who can monitor the agency's activities, would not work at below-market rates unless they were genuinely transferring resources to beneficiaries. We consider conditions for this solution to be incentive compatible. In a model with pure moral hazard, observability of wages makes incorporation as a not-for-profit firm redundant as a commitment device. In a model with both moral hazard and adverse selection, incorporation as a not-for-profit firm can serve as a costly commitment mechanism reassuring donors against misuse of their funds. Hiring a worker of low ability can also be a valuable commitment device against fraud.     

PRIZES VERSUS WAGES WITH ENVY AND PRIDE*

We show that if agents are risk‐neutral, prizes outperform wages if and only if there is sufficient pride and envy relative to the noisiness of performance. If agents are risk‐averse, prizes are a necessary supplement to wages (as bonuses).     

A NOTE ON ADVERSE SELECTION

A model of a labour market in which workers cannot signal their productivity is set up. The nature of adverse selection (too few good trades, too many bad trades, neither or both) is found to depend on the pattern of reservation wages.     

Does competitive pricing cause market breakdown under extreme adverse selection?

We study market breakdown in a finance context under extreme adverse selection with and without competitive pricing. Adverse selection is extreme if for any price there are informed agent types with whom uninformed agents prefer not to trade. Market breakdown occurs when no trade is the only equilibrium outcome. We present a necessary and sufficient condition for market breakdown. If the condition holds, then trade is not viable. If the condition fails, then trade can occur under competitive pricing. There are environments in which the condition holds and others in which it fails.     

Redistribution and entrepreneurship with Schumpeterian growth

We examine the effects of redistributive taxation on growth and inequality in a Schumpeterian model with risk-averse agents. There are skilled and unskilled workers, and the growth rate is determined by the occupational choice of skilled agents between entrepreneurship and employment. We show that redistribution provides insurance to entrepreneurs and increases the growth rate. The effects on inequality are such that low tax rates increase inequality relative to laissez-faire due to changes in wages, but higher tax rates can simultaneously raise growth and reduce inequality. We contrast the optimal linear income tax with alternative policies for promoting R&D and find that it is preferable on both equity and efficiency grounds.      

生存型与机会型创业者的行业选择研究

创业者的行业选择是创业成功与发展的重要基础之一。生存型与机会型的创业者在创业者个人特征、创业投资回报预期、创业壁垒和创业资金来源等方面都存在差异。这些差异对他们的行业选择有一定的影响。在对生存型与机会型创业者比较研究的基础上,根据层次分析法理论建立行业选择决策模型,对生存型与机会型创业者的行业选择作出评价,并对结果进行行业分析。     

Ethics,welfare, and capital markets

We examine implications of a society's cultural emphasis on moral sentiments. Entrepreneurs and investors interact in a game that entails both adverse selection and moral hazard; entrepreneurs may attempt to breach their contracts and expropriate investors. An agent is born into a particular culture but chooses whether to develop a moral conscience and thereby subject himself to moral sentiments. In equilibrium, societies that place less emphasis on guilt exhibit a lower risk of expropriation in contracts, a greater net price of capital, a larger size of firms, increased capital inflows and greater social welfare. The results of a greater emphasis on pride are in the same direction.     

Health insurance market reform and employee compensation: The case of pure community rating in New York

Pure community rating, which was enacted to improve access to health insurance in New York's small group market in 1993, prevents carriers from charging different premiums based on the ages of a firm's workers. If small firms were adjusting compensation packages prior to reform to offset higher health care costs of older workers, then community rating could lead to greater relative wages for older workers post reform and not necessarily induce adverse selection that results in changes in who is insured. I present evidence showing that relative wages of older workers in small firms increased in comparison with other states and with large firms within New York following reform.     

COLLECTIVE BARGAINING,AWARENESS OF GENERAL EQUILIBRIUM EFFECTS,AND UNEMPLOYMENT*

We explore the significance of general equilibrium feedback effects for wage‐bargaining. We examine a two‐sector economy and show that if agents only consider labor demand effects low real wages and low unemployment are the consequences. With an intermediate view, i.e., when partial equilibrium effects within a sector are taken into account, high real wages and unemployment result. If all general equilibrium effects are perceived simultaneously, we once again obtain a situation with low wages and unemployment. The results may explain why unemployment is high in some European countries.     

Trade and financial liberalization with asymmetric information in bank financing

We investigate trade and financial openness in a small developing country where entrepreneurs need bank financing to operate in an import‐competing sector but banks do not observe their ability. This informational asymmetry causes adverse selection of low‐ability individuals into entrepreneurship and also prevents poor but able individuals from being entrepreneurs. We find that trade opening improves national welfare, but a tax is needed on foreign financial capital. Trade opening reduces an income gap between the rich and the poor, while financial opening affects this income gap ambiguously.     

一个优序融资理论的解析模型

企业资本结构安排决定了资本市场的形成与发展,资本市场的现实状况又制约着企业资本结构的优化决策。本文从逆向选择角度,利用图解及数学模型分析解释了企业优序融资理论。基于假定(两类)企业对于其项目利润控制能力(能否使Rs>Rf)是不同的,通过对"共同均衡"和"个体均衡"的分析,认为企业优序融资行为的原因在于"逆向选择",而非"道德风险"。