The impact of productivity and demand shocks on structural dynamics: Evidence from Austrian manufacturing

Based on Pasinetti's model of structural dynamics we develop an empirical identification strategy for aggregate and sectoral labor productivity and demand shocks in a structural vector autoregressive model with long-run restrictions. Impulse response analysis shows that we can distinguish four patterns of the effects of changes in demand and productivity growth on sectoral output growth. For some industries demand is indeed the factor driving sectoral growth. Labor productivity and demand shocks are closely associated with the growth rates of employment and output across industries. However, there is less correlation with entry and exit. This suggest that structural change within and between industries may have quite different determinants.     

出口的资源配置效应——基于中国制造业的经验检验

Melitz(2003)通过引入企业的生产率异质性,发现出口可以迫使行业内低效率的企业退出市场,继而通过行业内资源的重新配置实现行业总体生产率水平的提升。文章选取1999-2007年间中国制造业行业层面数据为样本,在分别运用索洛余值法、随机边界分析法(SFA)和数据包络分析法(DEA)对行业生产率水平进行测算的基础上,对贸易自由度与行业总体生产效率之间的关系进行经验检验,结果发现中国的出口对于行业加总的生产率水平的促进作用并不显著,没有明显证据表明异质性企业贸易理论提出的这一新的获得贸易利益的途径在中国的存在。最后,文章建议应该进一步消除各种阻碍自由贸易的壁垒,努力盈造行业内公平、有序的竞争氛围,继而获得由出口引致的通过行业内资源重新配置带来的贸易利得。     

Technological Progress, Job Creation, and Job Destruction

New technology embodied in capital equipment can be adopted either through destruction of existing jobs and the creation of new ones or by renovation, updating the job's equipment. Under the assumption that the destruction of jobs generates worker layoffs, we show that higher productivity growth induces lower unemployment when renovation costs are low, but that the response of employment to growth switches from positive to negative as the cost of updating existing technology rises above a unique critical level. The effects of idiosyncratic productivity differences and cross sector mobility on the aggregate relationship between growth and unemployment are also studied.Journal of Economic LiteratureClassification Numbers: D92, E24, J41, J63, J64.     

Discriminating factors of women's employment

Italy exhibits a dramatic level of territorial heterogeneity in terms of socio-economic dynamics and in the economic position of women. We employ this territorial variance to assess the impact of selected policies and institutions on men's and women's employment using microeconomic data. Such an analysis provides results partly different from what was expected on the basis of cross-country aggregate evidence on industrialized countries. Aggregate growth and tertiarization of the economy are surprisingly found beneficial only to men's employment, while culture and discrimination are relevant for women's. Social Assistance is found highly significant too, with the provision of services being more beneficial to women's employment than monetary transfers.     

The puzzle on the causality of the productivity and employment growth: evidence from firm-level data

This article analyses the causality between the firm’s employment and productivity growth based on the population of manufacturing firms registered in Slovenia in the 1994–2003 period. By using the system GMM estimator, we show that the employment–productivity growth trade-off does not exist. Moreover, we find significant complementarities between employment and productivity growth, mostly driven by SMEs and firms from high-tech industries. Accordingly, we argue that the job-creation policy and productivity-promoting policy are complementary rather than trade-offs and that policymakers should focus on the optimal policy mix that provides the highest aggregate effect with regard to all growth aspects. Further, significant differences among the factors of employment and productivity growth suggest that job-creation policy measures are most successful when targeted at younger export-oriented firms with high total factor productivity levels and capital-intensive production. Meanwhile, the outcome of policy measures aimed at promoting productivity increases with a firm’s capital intensity and size up to the threshold employment level and with the intensity of market competition.     

Slow recoveries

Economies respond differently to aggregate shocks that reduce output. While some countries rapidly recover their pre-crisis trend, others stagnate. Recent studies provide empirical support for a link between aggregate growth and plant dynamics through its effect on productivity: the entry and exit of firms and the reallocation of resources from less to more efficient firms explain a relevant part of transitional productivity dynamics. In this paper, we use a stochastic general equilibrium model with heterogeneous firms to study the effect on aggregate short-run growth of policies that distort the process of birth, growth, and death of firms, as well as the reallocation of resources across economic units. Our findings show that indeed policies that alter plant dynamics can explain slow recoveries. We also find that output losses associated to delayed recoveries are large.     

Search,Concave Production,and Optimal Firm Size

This paper demonstrates that in a free entry search and bargaining economy with concave production firms over-employ. Bargaining allows the worker's wage to depend upon marginal productivity. As such, with strictly concave production, the wage declines as firms employ more labor. Firms react to this declining wage function by choosing an inefficiently large number of workers. However, in equilibrium, fewer firms are likely to enter causing aggregate employment and vacancies to fall.Journal of Economic LiteratureClassification Numbers: J30, J41, J50.     

Uninsured idiosyncratic risk, liquidity constraints and aggregate fluctuations

Summary. I study the role played by uninsured idiosyncratic risk and liquidity constraints in the propagation of aggregate fluctuations. To this purpose, I compare the aggregate fluctuations of two model economies that differ in their insurance technologies only. In one of these model economies liquidity constrained households vary their holdings of a nominally denominated asset in order to buffer an uninsured idiosyncratic shock to their individual production opportunities. In the other economy every idiosyncratic component of risk can be costlessly insured. I find that the limited insurance technology implies fluctuations in output that are 20% larger, fluctuations in hours relative to output that are 9% larger, fluctuations in consumption relative to output that are 18% smaller, and a correlation of hours and productivity that is 15% smaller than those that obtain under the full insurance technology. Received: March 6, 1996; revised version August 15, 1996     

Recursive equilibrium in endogenous growth models with incomplete markets

This paper analyzes the existence of recursive equilibria in a class of convex growth models with incomplete markets. Households have identical CRRA-preferences, production displays constant returns to scale with respect to physical and human capital, and all markets are competitive. There are aggregate productivity shocks that affect aggregate returns to physical and human capital investment (stock returns and wages), and there are idiosyncratic shocks to human capital (idiosyncratic depreciation shocks) that only affect individual human capital returns. Aggregate and idiosyncratic shocks follow a joint Markov process. Conditional on the aggregate state, idiosyncratic shocks are independently distributed over time and identically distributed across households. Finally, households have the opportunity to trade assets in zero net supply with payoffs that depend on the aggregate shock, but markets are incomplete in the sense that there are no assets with payoffs depending on idiosyncratic shocks. It is shown that there exists a recursive equilibrium for which equilibrium prices (returns) only depend on the exogenous aggregate shock variable (the wealth distribution is not a relevant state variable). Moreover, the allocation associated with this recursive equilibrium is identical to the equilibrium allocation of an economy in which households live in autarky and face both aggregate and idiosyncratic risk.I would like to thank for helpful comments Peter Howitt, Bob Lucas, Michael Magill, Tomo Nakajima, Herakles Polemarchakis, Martine Quinzii, Kevin Reffett, an anonymous referee, and seminar participants at various universities and conferences.     

Uninsured idiosyncratic investment risk and aggregate saving

This paper augments the neoclassical growth model to study the macroeconomic effects of uninsured idiosyncratic investment, or capital-income, risk. Under standard assumptions for preferences and technologies, individual policy rules are linear in individual wealth, ensuring that the equilibrium dynamics for aggregate quantities and prices are independent of the wealth distribution. The analysis thus remains highly tractable despite the incompleteness of markets. As compared to complete markets, the steady state is characterized by both a lower interest rate and a lower capital stock when the elasticity of intertemporal substitution is higher than the fraction of private equity in total wealth. For empirically plausible parameterizations, this condition is easily satisfied, and the reduction in aggregate saving and income is quantitatively significant. These findings contrast with Bewley models, where idiosyncratic labor-income risk leads to higher aggregate saving and income.     

On Keynes' inverse relation between real wages and employment: a debate over excess capacity ∗

This article examines Keynes's argument in favour of an inverse relation between employment and the real wage rate. In examining the debate over the inverse relation that took place during the 1930s the article argues that the failure of Keynes's critics to persuade him to relinquish the inverse relation can be traced to his own unrecognized use of a concept of marginal productivity different from theirs but that the larger unresolved issues persisting throughout that debate and continuing till the present are those relating to the formulation of ‘excess capacity’ during a depression and the specification of the supply side of the underemployed economy. Drawing on that debate but contrary to Keynes's own response, the article will propose a respecification of excess capacity such that the labour market directly incorporates aggregate demand independently of changes in the price level, and where an increase in employment is not predicated on a reduction in real wages even in the presence of (neoclassical synthesis) diminishing returns.     

Self-employment and the Okun's law

This research establishes a significant relationship between the share of self-employment in total employment and the Okun's coefficient, which had been insufficiently addressed in the literature. We provide evidence on the determinants driving the differences in the unemployment–output relationship in Spanish regions and conclude that the differences in the share of self-employment in total employment prove relevant when accounting for differences in Okun's law, and its effect is greater than that of labour productivity per worker, which had been considered the main factor for regional discrepancies. The economic policy implications of this outcome are valuable for two reasons: European authorities are promoting self-employment and the emergence of the ‘gig economy’. This finding also opens a notable line of research: assessing whether this empirical regularity is observable in other economies.     

STATE DEPENDENCE IN LABOR MARKET FLUCTUATIONS

This article documents state dependence in labor market fluctuations. Using a Threshold Vector Autoregression (TVAR) model, we establish that the unemployment rate, the job separation rate, and the job-finding rate (JFR) exhibit a larger response to productivity shocks during periods with low aggregate productivity. A Diamond–Mortensen–Pissarides model with endogenous job separation and on-the-job search replicates these empirical regularities well. We calibrate the model to match the standard deviation of the job-transition rates explained by productivity shocks in the TVAR, and show that the model explains 88% of the state dependence in the unemployment rate, 76% for the separation rate and 36% for the JFR. The key channel underpinning state dependence in both job separation and JFRs is the interaction of the firm's reservation productivity level and the distribution of match-specific idiosyncratic productivity. Results are robust across several variations to the baseline model.     

Employment and Productivity Growth in Europe and North America: The Impact of Labor Market Institutions

In this paper, we examine long-run employment and productivity growth in the major economies of North America and Europe from 1960 to the early 1990s. We develop a model in which output growth is determined by the growth of aggregate demand, and the relative contributions of employment and productivity growth to the growth of output depend on country specific labor market institutions. We find that institutions that promote collective bargaining, employment security and social protection have roughly equal and opposite effects on employment growth (negative) and productivity growth (positive), giving rise to an inverse relationship between these variables. The welfare implications of this finding are that labor market deregulation could result in more work and greater inequality and insecurity for workers, without significantly increasing the rate of economic growth.     

A Q-theory model with lumpy investment

We present an analytically tractable dynamic stochastic general equilibrium model that incorporates micro-level fixed and convex adjustment costs. We provide an explicit characterization of equilibrium dynamics by a system of nonlinear stochastic difference equations. We provide general conditions under which our model features investment lumpiness at the microeconomic level, but aggregate dynamics are isomorphic to those in a Q-theory model without fixed costs. This theoretical result is independent of the specification of the fixed cost distribution and also holds true when firms face persistent idiosyncratic productivity shocks.     

Structural transformation and its implications for the Chinese economy

This study examines China's structural transformation under the assumption that its employment structure converges to that in major developed economies in one and a half decades. The required annual output differentials between tradable and nontradable sectors, productivity increment in the nontradable sector, and government expenditure increment are estimated with the goal of employment stability conditional on population ageing. It appears that labour transfer from the tradable sector to the nontradable sector would be accompanied by relatively large aggregate output changes due to population ageing and efficiency changes in the tradable sector. Consumer price and real exchange rates are less affected during structural transformation. Although fiscal deficit would increase, government expenditure as a tool to stabilize employment is welfare improving as long as job switching is not cost prohibitive.     

Is there a Laffer curve between aggregate output and public sector employment?

This paper develops a model of the relationship between public sector employment, total output and aggregate real demand in market prices, where public employment has a positive productivity effect on private output. Public employment crowds out private employment and output because its increase induces higher wages and taxes. The valuation of government output is also taken into account. While public employment affects total output and aggregate real demand in an a priori ambiguous way, numerical simulations suggest that the relationship may be nonlinear; positive, when public sector is “small” and negative, when it is “large”. Using the annual data from 22 OECD countries over the period 1960–1996 and estimating and testing for threshold models and more commonly used specifications with multiplicative interaction terms give support to this nonlinearity hypothesis between public employment and private sector output. First version received: October 1996/Final version received: April 2000     

Did the pattern of aggregate employment growth change in the euro area in the late 1990s?

This paper examines whether the pattern of growth in euro area employment seen in the period 1997 to 2001 differs from that recorded in the past and what could be the reasons. First, a standard employment equation is estimated for the euro area as a whole. This shows that the lagged impact of both output growth and real labour cost growth, together with a productivity trend and employment ‘inertia’, can account for most of the employment developments between 1970 and the early 1990s. Conversely, these traditional determinants can only explain part of the employment development seen in recent years (1997 to 2001). Second, the paper shows sound evidence of a structural break in the aggregate employment equation in the late 1990s. Third, the paper provides some tentative explanations for this change in aggregate employment developments, using in particular country panels of institutional variables and of active labour market policies but also cross-sectional analyses. Among the relevant factors likely to have contributed to rising aggregate employment in recent years are changes in the sectoral composition of euro area employment, the strong development of part-time jobs, lower labour tax rates and possibly less stringent employment protection legislation and greater subsidies to private employment.     

Firm-level productivity in Latin America and the Caribbean

While the accumulation of factors of production, both physical and human capital, has helped Latin America and the Caribbean (LAC) to narrow the income gap with developed economies, aggregate productivity is still relatively low. Although there are numerous determinants of aggregate productivity, it is largely based on the underlying productivity of all firms in the economy. Using firm-level data from several waves of the World Bank Enterprise Survey and Chile's National Manufacturing Survey, we explore the ‘what’ question on productivity dispersion in LAC. We document three stylized facts: (i) there are significant differences in firm productivity within industries – the firm at the 90th percentile of the productivity distribution produces almost seven times as much output (using the same measured inputs) as the 10^th percentile firm; (ii) productivity differences persist over time – regressing a firm's current productivity on its one-year lagged productivity yields an autoregressive coefficient of around 0.9; and (iii) most of the growth in aggregate productivity comes from improvements in the productivity of existing firms.     

Heterogeneous Risk Preferences and the Welfare Cost of Business Cycles

I study the welfare cost of business cycles in a complete-markets economy where some people are more risk averse than others. Relatively more risk-averse people buy insurance against aggregate risk, and relatively less risk-averse people sell insurance. These trades reduce the welfare cost of business cycles for everyone. Indeed, the least risk-averse people benefit from business cycles. Moreover, even infinitely risk-averse people suffer only finite and, in my empirical estimates, very small welfare losses. In other words, when there are complete insurance markets, aggregate fluctuations in consumption are essentially irrelevant not just for the average person - the surprising finding of Lucas (1987) - but for everyone in the economy, no matter how risk averse they are. If business cycles matter, it is because they affect productivity or interact with uninsured idiosyncratic risk, not because aggregate risk per se reduces welfare.