A curvilinear approach to teaching learning effects for cost estimation

Where learning induced improvement is present, the learning curve describes an empirical relationship between output quantities and labor hours consumed. Even though estimating the learning curve is an important aspect of cost estimation, most managerial and cost accounting textbooks do not perform an analysis of historical data in specifying the learning model and its learning rate to predict labor hours consumed. Most textbooks introduce the log-linear learning curve model and then use variations of it to predict labor hours for specified output quantities given a common learning rate. While the logarithmic linear transformation of the underlying mathematical power function can be taught with spreadsheets, the more direct and appealing curvilinear data analysis of the innate power function can be just as easily performed. The analysis of curvilinear data to formulate a power function for learning and to estimate a learning rate makes the student acutely aware that not all cost behavior is linear. The Akamai Missile Company case illustrates a realistic and enriching data analysis for learning curves and their impact on cost estimation.     

Output and employment in a macro model with discrete transaction costs

The paper develops a macro model for determining output and employment when discrete transaction costs exist for paying wages and for purchasing commodities. Household labor supply is a function of an effective real wage, which modifies the apparent real wage to take account of the length of the payment period and the costs associated with buying and holding commodities. Firm labor demand is derived in a model where there are lumpy payroll costs associated with making wage payments. The behavior of households and firms is brought together in a market-clearing framework to determine the values of the real wage, employment and output, as well as the time intervals between wage payments and purchases of commodities. The effects of changes in the transaction and holding cost parameters are then examined by comparative-static techniques. An increase in any of these cost parameters turns out to reduce output and the amount of labor employed in production, but also tends to raise the amount of labor absorbed by the process of transacting. The tendency of transaction labor to move in the opposite direction from production labor implies that the net effects on total work are ambiguous.     

Inventories, employment and hours

This paper develops a model that integrates inventory and labor decisions. We extend a model of inventory behavior to include a detailed specification of the role of labor input in the production process, distinguishing between employment, hours and effort per worker. We estimate jointly the Euler equations for inventories and employment, a labor compensation schedule, and an hours requirement function with the cross-equation restrictions imposed. The econometric results shed light on several important topics, including the shape of the marginal cost of output, the role of labor hoarding as an explanation of pro-cyclical productivity, and the persistence of inventory stocks.     

A space for time: accounting and Time Based Management in a high technology company

Time Based Management is often presented as a managerial technology that is useful in all areas of management and possibly one that makes cost accounting useless and perhaps in some situations a direct impediment to management control. In this paper, however, we argue that Time Based Management cannot exist without the construction of a space within which time—as a one-dimensional decision parameter—can function. Here, cost accounting provides some of the mechanisms which seal off a production space, free it from external uncertainties and disruptions and make it possible to manage by time alone.     

Search Frictions,Financial Frictions,and Labor Market Fluctuations in Emerging Markets

This article examines the role of the extensive and intensive margins of labor input in the context of a business cycle model with a financial friction. We document significant variation in the hours worked per worker for many emerging-market economies using manufacturing data. Both employment and hours worked per worker are positively correlated with each other and with output. We show that a search-theoretic context in a small open-economy model requires a small wealth effect to explain these regularities at the expense of a smaller wage response. On the other hand, introducing a financial friction in the form of a working capital requirement can explain the observed movements of labor market variables such as employment and hours worked per worker, as well as other distinguishable business cycle characteristics of emerging economies. These include highly volatile and cyclical real wages, labor share, and consumption.     

Finance and employment: Evidence from U.S. banking reforms

Economic theory offers competing hypotheses about how the cost and availability of finance influence labor market outcomes. Making use of the U.S. banking reforms between the 1970s and the 1990s as a quasi-natural experiment, this paper studies the impact of credit market development on employment. This paper documents the significant effects of these reforms on employment growth. Potential channels between finance and employment are also investigated. Changes in the growth of the number of self-employed individuals, the entry and exit of firms, and investment growth do not explain most of the employment growth following the reforms. The reforms had a substantially higher impact in industries with higher labor intensity, which is consistent with the idea that labor has fixed costs that need to be financed.     

Insider trading and managerial incentives

We derive conditions under which permitting manager “insiders” to trade on personal account increases the equilibrium level of output and the welfare of shareholders. These increases are produced by two effects of insider trading. First, insider trading impounds information about hidden managerial actions into asset prices. This impounding of information allows shareholders to make better personal portfolio-allocation decisions. Second, allowing insider trading can induce managers to increase, on average, the correlation between their personal wealth and firm value beyond the level dictated by the employment relationship alone. This increased correlation increases managerial incentives. When these two effects are only weakly present, permitting insider trading harms shareholders, because insider trading reduces shareholder control over the performance–compensation relationship. In addition, when managerial effort incentives are high and corporate governance costs are low, managers may prefer insider-trading restrictions because such restrictions force shareholders to offer them a larger fraction of output through the employment relationship.     

“劳动力成本”涵义刍议

劳动力成本上升给中国经济和社会带来了深远的影响,引起了社会的广泛关注。然而至今为止对劳动力成本的涵义却还缺乏相对一致合理的共识。文章根据对现有文献关于劳动力成本概念研究的梳理,指出理解劳动力成本的涵义应该立足雇主的立场,要覆盖从劳动力同企业结合到分离全过程中企业为维持生产经营,在招用、使用、高用、退用员工过程中所承担的货币性和非货币性成本的总和。     

Agency Theory and Entry Barriers in Banking

Agency theory suggests that, in imperfect labor and capital markets, managers will seek to maximize their own utility at the expense of corporate shareholders. Indicators of such managerial behavior may include expense preferencing in which some factor costs are elevated above optimal levels needed for efficient production or avoidance of optimal risk positions that maximize wealth opportunities for stockholders. This study of more than 6400 banks finds that recent reductions in legal entry barriers have generated results generally consistent with agency theory with a lowering of noninterest operating expenses, increased employee productivity, increased acceptance of portfolio risk, and greater dividend rates to shareholders.     

The Boulton & Watt Case: The Crux of Alternative Approaches to Accounting History?

In accounting history, authors who have adopted a ‘Foucauldian’ approach have recently debated with those representing the ‘Neoclassical’ school of thought the relative sophistication and significance of cost accounting developments in the UK and US respectively during the late 18th and early 19th centuries. This paper argues that the differences between the two schools' understandings are important for comprehending the genesis and scope of modern cost and management accounting systems. It re-examines the historical case of Boulton & Watt, an engineering firm believed to have been in the vanguard of British Industrial Revolution accounting practice (Roll, 1930; Pollard, 1965 and 1990; Fleischman and Parker, 1991), in an attempt to clarify some of the key points of difference in the debate. It proposes that the historical crux for deciding where a modern managerial approach to accounting began lies in distinguishing between the development of engineering standards for materials and machine efficiency and the transfer of such performance measurements to human behaviour. A pressing task for historians is to establish when, where, how and why ‘labour standards’ were first articulated on the grounds that such forms of human accounting, by constructing norms of managerial performance, form the basis for modern management control. The paper reviews the primary sources on the history of cost accounting at Boulton & Watt, including the previously-acclaimed development of labour and engine standards. Its findings are that, while the latter were highly sophisticated as measures of engineering performance, they were less so on the economic dimension of cost measurement. Meanwhile, the evidence for labour standards is unconvincing; there was, around 1800, an intense period of investigating labour time and cost, but no subsequent long-term systematic control exercised over them analogous to the modern managerial approach found slightly later in US contexts. The paper suggests that one priority for further research is the detailed examination of early industrial enterprises on both sides of the Atlantic, in order to establish more definitively when, where, how and why this crucial development occurred.     

Can a Shorter Workweek Induce Higher Employment? Mandatory Reductions in the Workweek and Employment Subsidies

This paper presents a unified model of the impact on employment of a mandatory reduction in work hours in combination with an employment subsidy to reduce quasi-fixed costs of employment, while attempting to maintain worker's take-home pay or welfare level. Achieving the dual policy objectives of enhancing employment and maintaining worker income is not necessarily feasible. Nevertheless, a reduction in the legal workweek may induce a degree of downward wage flexibility, while an employment subsidy to firms accommodates downward wage rigidity. It may be possible, therefore, to increase employment with a policy that combines a reduction in the workweek with an employment subsidy. In general, however, the long run employment outcome is ambiguous, and a decline in output cannot be ruled out. More direct policy measures whose impact can be assessed with greater certainty—in particular, removing structural rigidities in the labor market—should be given priority to decrease long term unemployment.     

担保物权制度改革与企业劳动力结构北大核心

本文以《物权法》出台为标志的担保物权制度改革为准自然实验情境,考察资本市场制度建设对企业劳动力结构的影响。结果发现:相比固定资产占比较高企业,固定资产占比较低企业在改革后高技能劳动力增长显著更多、高技能员工在全体员工中占比显著提高。机制检验表明,担保物权制度改革通过加大企业的先进机器设备投资及研发活动进而影响了劳动力结构,特别是对改革前信贷可获得性较低或融资约束较高的企业更明显,这使担保物权制度改革、资本技能互补及企业劳动力结构间的逻辑关系得以进一步增强。横截面差异检验发现,法律制度环境较差地区企业以及成长机会较高企业,其劳动力结构更可能受《物权法》影响。最后,担保物权制度改革对企业劳动力结构的改变能提高其全要素生产率及盈利能力。本文从劳动力结构视角为识别《物权法》实施后果提供了证据支持,对于理解法律制度建设的经济效益、破解我国劳动力市场难题具有启示意义。     

最低工资标准提高对企业资本劳动比的影响研究

资本劳动比的提高对企业发展、经济增长和结构转型都具有重要意义。本文利用2002—2011年中国工业企业数据和283个地级市统计数据,探讨了最低工资标准提高对企业资本劳动比的影响。研究发现,最低工资标准提升对制造业企业资本劳动比具有显著的正向影响。平均而言,最低工资标准每提升10%,企业资本劳动比将提高2%,该结果在工具变量回归、双重差分法等多项稳健性检验下均成立。机制分析表明,最低工资标准提高会使企业增加资本投入和减少劳动力雇佣,这一结论为企业用资本替代劳动力的事实提供了直接证据。异质性分析表明,最低工资标准提升对企业资本劳动比的影响主要集中于非国有企业、较低工资水平企业和劳动密集型企业。进一步研究发现,随着最低工资标准提升,企业生产率和盈利能力显著提高,从而佐证了企业用资本替代劳动力的积极效应。本文的研究为进一步完善最低工资制度,促进经济转型升级提供了经验依据与政策启示。     

Are labor-saving technologies lowering employment in the banking industry?

Labor statistics show that the average labor hours per dollar of banking output fell by more than 30% between 1992 and 2002. The proliferation of labor-saving technologies was widely believed to be the major reason. While the first-round effect of a labor-saving technology with a given level of output is a reduction in required labor per unit of output, the second-round effect is a reduction in wage costs that will increase output. Analytically, a given type of labor-saving technology is more likely to have a positive effect on employment if the elasticity of substitution between capital and labor, the price elasticity of demand, and the cost-reducing impact of the new technology are sufficiently large. The main empirical findings of this study are that labor-saving technologies, and the spillovers of these technologies, are associated with higher firm-level employment. These results seem robust to a wide range of specifications and controls.     

Stock liquidity and managerial short-termism

We examine whether stock liquidity exacerbates or mitigates managerial short-termism. Utilizing earnings management as a proxy for managerial short-termism, we establish three major findings. First, firms with liquid stocks engage in less accrual-based and real earnings management. Second, the effect of stock liquidity on earnings management is amplified for firms with high levels of managerial pay-for-performance sensitivity. Third, the positive association between the intensity of earnings management and firm cost of capital is evident only for firms with low stock liquidity. Our findings are consistent with the threat of blockholder exit as the main governance channel through which stock liquidity discourages opportunistic earnings management and mitigates managerial short-termism.     

Managerial Ownership and Accounting Disclosures: An Empirical Study

This study examines empirically the effect of managerial ownership on firms' disclosures. Agency theory predicts that investors' information requirements increase with the agency costs of the firm. Managerial ownership mitigates agency costs and therefore should reduce investors' information needs. This study tests the hypothesis that firms with lower levels of managerial ownership provide more extensive disclosures by examining analysts' ratings of firms' disclosures. In contrast to the proxies used in prior studies that test this relationship, such as the earnings-return correlation and management earnings forecasts, these ratings provide a more direct measure of firms' overall disclosure practices.I find that the relationship between managerial holdings and disclosures depends on the type of disclosure. Consistent with the hypothesis of this study, firms with lower levels of managerial ownership are more likely to receive higher ratings for the disclosures provided in their annual and quarterly reports, even after controlling for size, performance, volatility of returns, the frequency of securities offerings and proprietary costs. The more informal and flexible aspects of disclosures, however, as measured by the investor relations rating, are not influenced by the level of managerial ownership. These results are consistent with prior research that predicts that firms lower their costs of capital by signaling a commitment to maintain a more open disclosure policy. Because annual and quarterly reports are less flexible, and therefore less likely to change, they may represent a more credible commitment to provide more informative disclosures.     

Impact of Automation on Cost Accounting

Although production methods have been highly developed and now make use of very advanced technologies, management accounting systems have lagged behind. Before introducing new cost accounting systems, however, it is necessary to have a clear view of practice. The empirical results described in this paper constitute the output of a large scale research project into manufacturing companies located in Belgium. Extensive data on cost accounting systems were gathered through the use of a questionnaire. There is an indication that technological change has an impact on both cost composition and cost structure. The widespread hypothesis that the proportion of direct labour cost within total costs is lower in companies with automated production process is confirmed. As to the traceability of costs, there is a shift from indirect costs towards direct costs in companies with automated production. However, it appears that only a few companies are concerned about the efficiency of their cost calculation on a permanent basis. Moreover, no differences could be detected in the use of cost accounting in decision making between companies with automated production and those with mechanical production.     

On‐the‐Job Learning and News‐Driven Business Cycles

This paper proposes a new channel of on‐the‐job learning to explain the positive comovement between consumption and employment following good news about future productivity. The new recruits can generate an additional stream of output production in all future periods, and the firm's labor demand is thus characterized by the forward‐looking property. Therefore, the firm is motivated to hire more new recruits in advance in response to good news about future productivity. Once the increase in labor demand is greater than the decrease in labor supply caused by the income effect, the coincident rise in consumption and employment can be driven by the news shock. When such a channel is paired with investment adjustment costs and the endogenous capacity utilization rate, this paper provides a plausible explanation for simultaneous booms in current consumption, investment, output, and employment to match the empirical evidence under the news shock.     

Evolving dynamics of the relationship between US core inflation and unemployment

Labor market dynamics in the US are changing due to long-term factors including decelerating labor force growth, rising age of the labor force, and the rapid advance of e-commerce, as well as the one-time downward adjustment during 2009–2013 of the size of state and local government work forces. We discuss some of the controversies revolving around how to analyze labor markets in this dynamic environment from the perspective of monetary policymaking, given the dual mandate of the Federal Reserve to encourage both full employment and price stability.Our statistical research documents the changing association between US unemployment and core inflation. There was a perceived trade-off between inflation and unemployment in the 1950s and 1960s that gave way to stagflation in the 1970s, when both unemployment and inflation were rising. The 1980s were a transition period where the trade-off was perceived to have returned. This trade-off has not been so clear, however, when one looks at the last twenty years. Since 1995, a period of stable and low inflation was consistently observed despite considerable cycles in the unemployment rate.Our theoretical discussion provides a dynamic interpretation of the shifting nature of labor markets, with the objective of pointing the way for future research while highlighting crucial differences in possible interpretations that could fuel debate, both inside and outside the Fed, over how the Fed should manage its dual mandate. The dynamic changes being seen in US labor markets all suggest that the effectiveness of monetary policy to encourage full employment may be vastly overstated. If this interpretation is correct, the Fed may need to reconsider how to manage its dual mandate and react less aggressively to perceived labor slack that may be due to longer-term structural shifts over which the Fed has no influence.