Quality costing: a management review

This paper relates a review of the English language literature on quality costing and traces its historical development; it provides authoritative reading on the subject. The review also has a focus on collection and use of quality-costing methods, quantitative cost data and the role and views of accountants in the task of quality-cost collection and reporting. Amongst the main findings is the preoccupation with the prevention – appraisal – failure categorization of quality costs and lack of guidance on definitions. The considerable impact of the American quality profession on the development of quality costing is pointed out along with the increasingly positive stance of accountants.     

The management accountant's role in quality management: A Queensland perspective

The successful implementation of quality management (QM) requires a change in both an organization's culture and structure. Consequently, as management accountants are organizational members their roles and systems will need to change to provide support for this QM implementation. This study found that although the majority of management accountants are involved in the implementation of quality concepts into the accounting area of the firm, there has been little modification of cost determination methods and limited development and use of quality related performance measures. Nevertheless, the overall results of this research imply that the role of the management accountant has altered due to the implementation of QM practices, but not to the degree indicated in the literature.     

Education for operational research

The paper debates the requirements of education for operational research (O.R.). It is assumed that the objective of O.R. is to secure improvement in social systems by means of scientific methods. It is argued that the programme of learning and the methods of teaching should converge to this end. There is a brief review of what some of those who are responsible for courses in operational research at universities have said about their aims and curricula. The confusion over aims and the imbalance between the rational account of O.R. and the empirical approach is briefly discussed. There follows a plea for an effort to describe the structure of O.R. and the need for a taxonomy from which a better understanding of the educational problems may emerge. The essay concludes by asserting that the climate, nature and content of research especially in the universities should be such as to attract men of great talent and hopefully a few men of genius who will advance the subject to the status of a major science.     

The Employment–Hours Trade‐off: Theory and an Application to the Portuguese Case

Abstract. Using traditional production theory, it is possible to estimate production functions in which hours per worker and number of workers hired are treated as endogenous and chosen by the firm, priced respectively by the variable hourly wage and the so‐called quasi‐fixed unit cost. The available data suggested the use of Cobb–Douglas or CES specifications or the use of two‐stage separable technologies, with a second‐level Cobb–Douglas being possible. Quasi‐fixed costs were associated with legal social security payments, which were also conditioned by the data. The estimates for the Portuguese metal products and engineering industries — using cross‐section evidence for 1987 — showed that disaggregation of the labor input is empirically justifiable, and total man‐hours employed and the numbers of workers hired are complements in production. Hours per worker respond negatively to the variable hourly wage and positively to the quasi‐fixed unit cost. Nevertheless, in our framework, this would be so by construction. Total labor costs increase with both the hourly wage and the quasi‐fixed unit costs.     

Stress, social support and psychological well-being in British accountants

This paper reports an exploratory study of stress, social support and psychological well-being in British chartered accountants, using data from 399 self-report questionnaires. The results suggest that the underlying structure of stress in British accountancy can be explained by three dimensions; quantitative overload stressors, professional/administrative interface stressors and nuisance stressors. The underlying structure of social support for the sample can be represented by three dimensions of help support, social dependability and esteem support. Intensity of quantitative overload stressors, intensity of professional/administrative interface stressors and all three dimensions of support were found to be related to psychological well-being in the sample. Differences between these variables, types of organization and organizational position were examined. The results are discussed with reference to stress management interventions for accountants. Possible generalizations to other professional groups are discussed.     

Urban Versus Rural Return to Human Capital in Portugal: A Cookbook Recipe for Applying Assignment Models

Abstract. The Portuguese economy has been characterized by modernization since the post‐war period, and Lisbon is a centre of this process. This paper analyses rates of return on human capital in Lisbon versus the rest of the country in the period 1982–92. An assignment model of heterogeneous workers to heterogeneous jobs is applied. We introduce the concept of the complexity dispersion parameter, which measures job heterogeneity and the ease of substitution between worker types. It is free dimension and can be compared across countries. We also develop a cookbook recipe for the estimation of this parameter. The main implication of the model — a high return to human capital is associated with similar workers being assigned to more complex jobs — is confirmed by the data. The complexity dispersion parameter suggests that paying half of the optimal wage level at least doubles the cost per efficiency unit of labour.     

Stress,social support and psychological well-being in British accountants

Abstract

This paper reports an exploratory study of stress, social support and psychological well-being in British chartered accountants, using data from 399 self-report questionnaires. The results suggest that the underlying structure of stress in British accountancy can be explained by three dimensions; quantitative overload stressors, professional/administrative interface stressors and nuisance stressors. The underlying structure of social support for the sample can be represented by three dimensions of help support, social dependability and esteem support. Intensity of quantitative overload stressors, intensity of professional/administrative interface stressors and all three dimensions of support were found to be related to psychological well-being in the sample. Differences between these variables, types of organization and organizational position were examined. The results are discussed with reference to stress management interventions for accountants. Possible generalizations to other professional groups are discussed.     

Computer models for corporate planning

This paper presents results of a survey of corporate modelling in 65 U.K. companies. It shows that corporate models were already used in a wide range of industries by 1973 and analyses the characteristics of these models, the uses to which they were put, the background of the model builders, approaches to development of models that were adopted, costs of development, and indications of success or failure. It is, for instance, shown that many corporate models are relatively small and simple, and have been built by accountants, planners and other ultimate users, using special facilities for corporate modelling offered by computer bureaux and consultants.     

Residential Location,Job Location,and Wages: Theory and Empirics

I develop a stylized partial on‐the‐job equilibrium search model that incorporates a spatial dimension. Workers reside on a circle and can move at a cost. Each point on the circle has a wage distribution. Implications about wages and job mobility are drawn from the model and tested on Danish matched employer–employee data. The model predictions hold true. I find that workers working farther away from their residence earn higher wages. When a worker is making a job‐to‐job transition where he/she changes workplace location he/she experiences a higher wage change than a worker making a job‐to‐job transition without changing workplace location. However, workers making a job‐to‐job transition that makes the workplace location closer to the residence experience a wage drop. Furthermore, low‐wage workers and workers with high transportation costs are more likely to make job‐to‐job transitions, but also residential moves.     

On‐Call Overtime for Service Workforce Scheduling when Demand Is Uncertain

This article builds on prior research to develop shift scheduling models that include on‐call overtime for service environments where demand is uncertain. The research is motivated by recent developments in nurse scheduling, such as laws prohibiting mandatory overtime and the popularity of self‐scheduling systems. For single‐period scenarios, models are developed, solution methods are described, and results are explored for a variety of environments. Results show that the use of on‐call overtime can reduce costs slightly, with the amount of savings dependent on characteristics of the scheduling environment. The factor that most significantly affects cost savings is the cost of outside agency workers relative to overtime workers. In addition to lowering costs, on‐call overtime greatly reduces reliance on outside agency workers, which can have important practical implications in terms of quality of service and workforce morale. Results based on single‐period models motivate multiperiod formulations for single‐ and multidepartment scenarios, and solution methods are outlined for those cases. The possibility of using multiperiod models within a rolling horizon framework with forecast updating is discussed. This goes along with an extension of the traditional workforce management hierarchy that separates overtime and regular‐time scheduling, as seen in practice with self‐scheduling and shift‐bidding systems.     

Human Capital Accumulation,Social Mobility and Migrations

This paper studies the effects of migrations on growth and income distribution when social mobility is imperfect. Workers migrate in response to differences in expected wages between home and a foreign country, but their choice depends also whether they qualified themselves as skilled workers by accumulating human capital or not. Such an activity has a cost, which depends on each agent’s family background: sons of skilled workers have lower human capital accumulation costs. The effects of labour migrations on per capita income depend only on the degree of social mobility: if there is a difference in the cost of accumulating human capital for the sons of educated and non-educated people, migrations reduce total earnings of unskilled workers in the receiving country, and increase those of skilled workers.     

Financial planning for new products: Part I—Basis for model formulation

In a previous paper the author presented a staged approach methodology for the evaluation and selection of R & D projects. The present paper is intended to serve as its complement.The aim is the formulation of a matching overall long range budget planning policy which will attempt to answer the questions of “how many projects to prove” and “how much to fund” on the basis of satisfying the company growth objective.To achieve the above purpose, a staged budget planning model has been developed which recognizes and utilizes the specific attributes of the various R & D stages. Tje project stage survival rate and project stage cost ratio concepts are discussed. A steady flow of projects through the various R & D stage is maintained. The aim of the program is to produce periodically a planned number of new products fro commercial investment.This methodology may apply to R & D program with a sufficient number of moderately sized projects that justify the use of survival rate and cost ratio values. It should be constructed as a tentative effort for possible use within the staged limitations.     

Cross‐Training with Imperfect Training Schemes

Cross‐training workers is one of the most efficient ways of achieving flexibility in manufacturing and service systems for increasing responsiveness to demand variability. However, it is generally the case that cross‐trained employees are not as productive on a specific task as employees who were originally trained for that task. Also, the productivity of the cross‐trained workers depends on when they are cross‐trained. In this work, we consider a two‐stage model to analyze the effects of variations in productivity levels on cross‐training policies. We define a new metric called achievable capacity and show that it plays a key role in determining the structure of the problem. If cross‐training can be done in a consistent manner, the achievable capacity is not affected when the training is done, which implies that the cross‐training decisions are independent of the opportunity cost of lost demand and are based on a trade‐off between cross‐training costs at different times. When the productivities of workers trained at different times differ, there is a three‐way trade‐off between cross‐training costs at different times and the opportunity cost of lost demand due to lost achievable capacity. We analyze the effects of variability and show that if the productivity levels of workers trained at different times are consistent, the decision maker is inclined to defer the cross‐training decisions as the variability of demand or productivity levels increases. However, when the productivities of workers trained at different times differ, an increase in the variability may make investing more in cross‐training earlier more preferable.     

Unemployment and Retirement in a Model with Age‐specific Heterogeneity

This paper presents a model where young and old workers compete for one type of jobs in the presence of retirement opportunity. Within this framework, we show that increased retirement opportunities (such as a decrease of the retirement age) has most of the time a depressing impact on the unemployment rate. Indeed the number of vacancies posted by firms is influenced by the probability that an old worker is going into retirement. We show that the degree to which younger workers are influenced by retirement of older workers depends on the relative productivity of young and older workers. It is only when older workers are much more productive than young workers that retirement may benefit to unemployment.     

Emotions and the optimality of uneven tournaments

Standard results from tournament theory show that an employer should avoid organizing uneven tournaments in which workers are characterized by different cost functions. In this paper, we introduce a concept of emotions that workers have when comparing their own performance with the performances of their co-workers. We can show that under emotional workers the employer may prefer uneven tournaments to even ones. In that case, the employer benefits from both positive and negative emotions. Moreover, the behavior of emotional workers fits well with experimental findings on uneven tournaments where players choose excessive effort levels.     

Aggregate production planning with workforce transferring plan for multiple product types

This paper presents the aggregate production planning for multiple product types where the worker resource can be transferred among the production lines. A mathematical model was formulated in spreadsheet format. Then the spreadsheet-solver technique was used as a tool to solve the model. A real situation of a manufacturing company was selected as a case study. The actual data was used to test and validate the proposed model. The optimal aggregate production plan provides the information on managing the available production capacity together with the useful workforce transferring plan. The obtained solutions were compared to those of another approach where the workers cannot be transferred among the production lines. The total cost is significantly reduced when the workers are allowed to transfer among the production lines.     

AN APPROACH TO COST—VOLUME—PROFIT ANALYSIS UNDER UNCERTAINTY*

Cost-Volume-Profit analysis is a tool of cost accountants aiding in the choice of an optimal course of action in the solution of a managerial problem. C-V-P is a limited analysis since all the needs of management in determining the optimal strategy are not fulfilled. Factors pertinent to the choice of the optimal strategy under uncertainty are variables, although traditional C-V-P treats these factors as constants. Hence, an approach to C-V-P where pertinent factors necessary for decision making are considered as variables is more desirable than traditional C-V-P. By introducing uncertainty, it is also beneficial to broaden C-V-P to fulfill the following desire of management. Should management choose a course of action based only on its own estimates of the decision parameters or is it advisable to postpone a terminal decision until additional research into the decision parameters is accomplished? Broadened C-V-P solves this problem with the aid of Bayesian Decision Theory for the choice of the optimal course of action in the face of uncertainty.     

Overeducated Workers as an Insurance Device

Empirical findings show that firms frequently employ overeducated workers. Since overeducated workers earn more than adequately educated ones working in similar jobs these findings seem to be puzzling. In this paper, we introduce an insurance approach to explain the employment of overeducated workers. Referring to this approach, overeducated workers are employed by a firm to avoid high losses in the case of a crisis (e.g. when the production process breaks down). Contrary to adequately educated workers, overeducated ones may be helpful in this situation by quickly offering improvisatorial solutions. First, we use a simple model to demonstrate the insurance argument. Second, we test the major implication of the model empirically by using industry panel data: if and only if high‐skilled workers are employed for insurance purposes, the average wage of high‐skilled workers in firms that need insurance will be lower compared with firms that do not need insurance. The data confirm this theoretical result.     

Assembly Line Balancing with Resource Dependent Task Times*

Paced assembly lines are widely used in repetitive manufacturing applications. Most previous research on the design of paced lines has assumed that each task along the line can be performed by only one worker (or a fixed number of workers). In many cases, however, task duration times may be reduced by increasing the number of workers or changing the equipment assigned to work stations. Thus, the problem becomes one of assigning resource alternatives (e.g., workers and/or equipment) and tasks to work stations to minimize total cost for a desired production rate. For this problem, we present three procedures. The first formulates the problem as a shortest path problem and guarantees optimality. The second and third are heuristic adaptations of the shortest path procedure that are capable of solving large problems. The procedures are compared in terms of solution quality and computation time on a set of 128 randomly generated problems for which optimal solutions could be found. Our simulation results indicate that the choice of procedure depends on problem complexity and resource costs.