Social security and the labor supply of older married couples

This paper provides estimates of the impact of social security benefits on the labor force behavior of older married couples in the United States, with the ‘spouse benefit’ provision receiving particular attention. The empirical results using data from the Retirement History Survey show that the spouse benefit provision has a moderately small negative impact on labor force participation by older married women and a small positive impact on the labor force participation of older married men. The results are used to evaluate the potential labor supply impact of a proposal to eliminate spouse benefits and replace them with earnings sharing.     

Social security and retirement across the OECD

Employment to population ratios differ markedly across Organization for Economic Cooperation and Development (OECD) countries, especially for people aged over 55 years. In addition, social security features differ markedly across the OECD, particularly with respect to features such as generosity, entitlement ages, and implicit taxes on social security benefits. This study postulates that differences in social security features explain many differences in employment to population ratios at older ages. This conjecture is assessed quantitatively with a life cycle general equilibrium model of retirement. At ages 60–64 years, the correlation between the simulations of this study׳s model and observed data is 0.67. Generosity and implicit taxes are key features to explain the cross-country variation, whereas entitlement age is not.     

Social security and cross-country differences in hours: A general equilibrium analysis

I develop a general equilibrium life cycle model with an intensive and extensive margin of labor supply and endogenous human capital accumulation. I use the model to assess the effects of changes to various features of social security on labor supply outcomes. Of particular interest are changes to the scale of the program and to the relevant eligibility rules. I find that the cross-country differences in social security programs account for at least 79% of the differences in employment rates of people aged 55–64 and 17–31% of the differences in aggregate hours worked between the US and continental Europe.     

Labor force participation

Trends in U.S. female and male labor force participation are outlined, particularly for the post-World War II period. Potential causes of these trends are then discussed, both those that operate on the demand side and those that operate on the supply side of the labor market, along with some discussion of alternative approaches to modeling these employment changes. Effects of these trends and future direction of changes are also considered.     

Labor supply and the optimality of Social Security

Traditional economic theory predicts that an unfunded public pension system can be justified on the basis of its ability to provide intergenerational transfers, and also for its ability to provide partial insurance against mortality and labor income risks. In this paper, I demonstrate that the quantitative importance of these traditional roles depends on how the pension system distorts households' labor supply decisions. Using a general-equilibrium life-cycle consumption model calibrated to the U.S. economy, I show that these distortions can be large enough to erase much of the traditional welfare gains from Social Security. I also find that this fact is robust within the range of labor supply elasticities usually encountered in the macroeconomic literature.     

Time-inconsistent preferences and social security: Revisited in continuous time

?mrohoro?lu et al. (2003) prove that it is impossible in a three period partial equilibrium model for social security to improve the welfare of a naive quasi-hyperbolic agent if the program has a negative net present value. This paper first generalizes their impossibility theorem to a continuous time setting and then proves analytically that no discount function exists that can rationalize a social security program with a negative net present value.     

Intergenerational risk shifting through social security and bailout politics

This paper adopts a stochastic overlapping generations framework to analyze the allocation of aggregate financial risks under different social security systems and a majority voting rule. We study whether there will be switches between pay-as-you-go (PAYG) and fully funded (FF) systems in such an economy. We show that in case of a negative aggregate shock, low-income young individuals will form a political coalition with the elderly to implement a PAYG system. PAYG scheme is shown to persist even after a good aggregate shock if the system is redistributive enough.     

Social Security and the Retirement and Savings Behavior of Low Income Households

In this paper, we develop and estimate a model of retirement and savings incorporating limited borrowing, stochastic wage offers, health status and survival, social security benefits, Medicare and employer-provided health insurance coverage, and intentional bequests. The model is estimated on a sample of relatively poor households from the first three waves of the Health and Retirement Study (HRS), for whom we would expect social security income to be of particular importance. The estimated model is used to simulate the responses to changes in social security rules, including changes in benefit levels, in the payroll tax, in the social security earnings tax and in early and normal retirement ages. Welfare and budget consequences are estimated.     

REDUCE EMPLOYERS’ SOCIAL SECURITY CONTRIBUTIONS AND CONTROL LABOR FRAUD: REMEDIES FOR SPAIN'S AILING ECONOMY?

The aim of this paper is to quantify the impact of the reduction on social security contributions (SSCs) of employers recently claimed by the Spanish enterprisers’ organizations on the main macroeconomic variables. The effects of this tax reform are evaluated with a Computable General Equilibrium model with the neoclassical closure rule. The model is calibrated with a Social Accounting Matrix for the year 2000 (SAMES-00) elaborated by the authors. Results show that lower SSCs of employers raise employment, households’ welfare and real gross domestic product (GDP) but also increase the public deficit. These positive effects remain when the reduction is compensated with personal income taxes to keep the public deficit/GDP ratio constant and also when the compensating variable is value-added tax (VAT). Unlike in previous studies, the most positive effects are obtained when the lower public revenues are compensated via lower coverage of unemployment benefits.     

Kinship and business: how entrepreneurial households facilitate business growth

Building on studies that have stressed the importance of context and the role of the family in business growth, this study explores the role of the entrepreneurial household in the process of business development and growth. We seek to understand how household strategy influences the development of new businesses, the ways in which household characteristics and dynamics influence business growth strategy decisions and how business portfolios are managed and developed by the household. To examine these questions, comparative case studies were undertaken drawing data from four entrepreneurial households located in remote rural regions of Norway and Scotland. The data reveal the role of the entrepreneurial household in the evolution of business creation and growth, examining the processual aspects of entrepreneurial growth, the interactions between business activities and entrepreneurial households and how business portfolios are developed in practice. Three analytical themes emerged from the analyses: the tightly interwoven connections between the business and the household, the use of family and kinship relations as a business resource base and how households mitigate risk and uncertainty through self-imposed growth controls. Although previous studies have viewed entrepreneurial growth largely as an outcome of personal ambition and business strategy, these results reveal the importance of the entrepreneurial household and the household strategy in determining business growth activities.     

社保基金审计监管体制构建

在老龄化的人口结构下,社保基金的安全、完整和合规运作显得尤为重要,关系到整个社会的稳定发展,关系到广大人民生活安定与否。本文就老龄化社会背景下,如何加强社保基金监管,提出了建立以国家审计为主导、以内部审计为基础、以社会审计为辅助的审计监管机制,加强对社保基金的管理监督。     

CHILD CARE PRICES AND MATERNAL EMPLOYMENT: A META‐ANALYSIS

The literature estimates for labor force participation elasticity with regard to child care prices are extensive and varying. While some estimates imply substantial gains from child care subsidies, others find insignificant effects. To determine the causes of the variance, this paper reviews and analyzes the elasticity sizes using estimates from 36 peer‐reviewed articles and working papers in the literature. We start by reviewing the theoretical and empirical aspects related to participation elasticity with regard to child care costs, paying special attention to sample characteristics, methodological aspects, and macro level factors. We conclude by providing a meta‐regression using control variables based on our review of the literature to explain some of the differences between the estimates. As research builds on and improves the methods and assumptions in prior works, elasticity estimates have become smaller over time. This decline might also be partially explained by changes in labor market characteristics. In countries with high rates of part‐time work and very high or very low rates of female labor force participation, we find elasticity rates to be smaller.     

On the role of labor supply for the optimal size of Social Security

The paper studies the welfare effects of a Social Security system in a stylized overlapping generations economy with random production and capital accumulation. Different welfare concepts including long run optimality, social optimality, and time consistency are employed to determine the optimal size of the system. When labor supply is exogenous, a unique contribution level can be identified which is optimal according to all three concepts. When labor supply is endogenous, however, this result generically fails to hold and the long-run optimal solution is only constrained socially optimal while the time-consistent policy may even lead to an inefficient equilibrium.     

Drivers of entrepreneurial aspirations at the country level: the role of start-up motivations and social security

This paper investigates whether various start-up motivations and a country’s level of social security can explain the prevalence of entrepreneurial aspirations. For entrepreneurial aspirations and motivations we use country-level data from the Global Entrepreneurship Monitor (GEM) for the year 2005. We distinguish between the necessity motive, independence motive and increase wealth motive and between aspirations in terms of innovativeness, job growth and export orientation. Our findings indicate that social security negatively affects a country’s supply of ambitious entrepreneurship. Our results also suggest that entrepreneurial aspirations in terms of job growth and export relate positively to the increase wealth motive.     

The role of asset testing in public health insurance reform

Starting slowly with the 1996 Welfare Reform Act and culminating in the 2010 Affordable Care Act, means-tested public health insurance eligibility expanded to include adults in low-income families regardless of their asset holdings. This paper quantifies the effects of these eligibility expansions within the context of the 2010 Affordable Care Act. I construct a dynamic stochastic general equilibrium model with indivisible labor supply expanded to include an endogenous household choice of health insurance coverage and calibrate it to U.S. data. I establish that changes in the distribution of labor and welfare associated with removal of asset testing are driven by exit of high productivity and high wealth households from the labor market. I then expand my analysis to the 2010 Affordable Care Act to demonstrate that removal of asset testing is critical to the obtained results even when combined with other provisions of the Act. Finally, I find that a simple asset test for eligibility of health insurance transfers undoes the distortion to the household labor supply decision among high productivity types. These results are robust to the introduction of employer premium contributions, an independent health insurance market, and idiosyncratic shocks to eligibility for employment-based health insurance.     

基于协同安全策略的网络安全管理平台之设计与构建

文章设计了一种可以动态实现和设置安全要素的网络安全管理平台NetSecu,有效管理生产网络中的各种安全要素。每个NetSecu节点都是基于Java和Click模块化路由器构建的。通过运用这一组合,可以动态实现、禁用或升级运行时的安全要素。性能评估显示,NetSecu可以为常用的网络安全管理平台提供足够的性能。     

网络安全技术研讨

随着计算机网络技术的广泛应用,网络安全问题已不容忽视,作为一个面向大众的开放系统,计算机网络面临着来自各方面的威胁和攻击。因此,网络安全系统的构建是一个非常重要的问题,它涉及到从系统硬件到软件,从单机到网络的各个方面。文章介绍了计算机网络所面临的安全威胁的几个方面,提出了构建安全的信息网络的策略、方法,该策略和方法可相对减少网络安全威胁,提高网络安全性。     

劳动关系作为法律关系:兼论劳动法学研究的范式转换

劳动关系和劳动法律关系区分的理论更多是法外视角研究劳动关系问题的结果。法律调整社会关系或劳动关系并非是指存在先在的供法律调整的社会关系,而是指法律通过规范人的行为在当事人之间产生法律关系,该法律关系是社会关系的特殊形式;法律关系产生的过程不是寻找社会关系的过程,而是判断法律规范规定的构成要件是否具备的过程。法律调整劳动关系因此是指出现法律规范的构成要件时在当事人之间产生以一方提供依附性劳动、另一方支付报酬为主要义务的权利义务关系,也即法律意义上的劳动关系。从上述劳动关系的逻辑出发,则事实劳动关系概念需要正本清源,集体劳动关系非法律意义的劳动关系,劳动法律关系、社会劳动关系、个别劳动关系等概念无存在必要。劳动法学研究应实现从法外视角向法教义学研究并重的转换。我国劳动法的规则体系和理论体系应围绕劳动关系展开。     

城市居民最低生活保障对象的社会救助研究--以常州市为例

分析了常州市城市居民最低生活保障制度实施以来,常州市城市贫困阶层最低生活保障对象的生活、群体特征及其社会救助状况;讨论了社会救助制度推行过程中存在的问题及解决对策与思路.     

The political economy of environmental and social security policies: the role of environmental lobbying

Social security provides retirement benefits to the old at the expense of the working young, while environmental investment benefits the future of the young at the expense of the old. This paper presents a model incorporating this intergenerational conflict on public spending and considers the political determination of environmental investment and social security by focusing on the Markovian political equilibria. It is shown that (1) the political equilibria are generally inefficient, and (2) the introduction of environmental lobbying into politics may improve environmental quality but degrade lifetime utility in the long run.