Rotation Patterns and Trend Estimation for Repeated Surveys Using Rotation Group Estimates

A general approach for constructing filters to produce trend estimates from a repeated survey is described. This approach accounts for the correlation structure induced by the rotation pattern used in the survey. Different filters are developed depending on whether the trend analysis is based on elementary estimates available for each rotation group or overall estimates obtained by combining the rotation group estimates. The properties of trend estimates obtained directly from the elementary estimates, those obtained from the simple average of the rotation group estimates and trend estimates obtained from the best linear unbiased estimates of the population characteristics of interest are compared. These comparisons are done for a number of rotation pattern, enabling an assessment of the impact of the choice of rotation patterns on trend estimation.     

Zero Hours Contracts and Their Growth

This article studies the prevalence and nature of zero hours contracts (ZHCs) in the UK labour market. It is widely argued that the headline count of ZHC workers based on the Labour Force Survey historically underestimated the number of workers in ZHC jobs. Here, we argue that this likely continues to be the case, particularly if one considers other, similar, no-guaranteed-hours jobs alongside ZHCs. ZHC jobs and workers are heterogeneous, but ZHCs have become increasingly concentrated among young workers, full-time students, migrants, black and minority ethnic workers, in personal service and elementary occupations, and in the distribution, accommodation and restaurant sector over time. Compared to other forms of employment, median wages in ZHC jobs have also fallen. The most common prior labour market state for ZHC workers is non-ZHC employment, particularly part-time employment, with part of the reported growth in ZHCs driven by reclassification of existing employment relationships. Finally, we show that growth in public awareness of ZHCs contributed substantially to recent growth in reported ZHCs, particularly over the period 2013/14.     

Digitalisierungsschub in Firmen während der Corona-Pandemie

Wirtschaftsdienst - Durch die Corona-Pandemie haben digitale Technologien in Unternehmen an Bedeutung gewonnen. Auf Basis einer Betriebsbefragung des Instituts für Arbeitsmarkt- und...     

Boundaries of the Tournament Pricing Effect in Asset Markets: Evidence from Experimental Markets

Tournament compensation of asset traders has been shown to promote deconvergence from intrinsic value pricing in an experimental asset market where all traders are so compensated (James and Isaac 2000). This paper explores the extent of this effect as experimental design parameters—proportion of traders facing tournament compensation, details of the tournament contract, and time horizon of the asset being traded—are varied. We find that the original results are replicated using the original parameters, that a tournament contract modified to provide a penalty for underperformance does not necessarily eliminate the effect, and that reducing the proportion of traders facing tournament compensation to half the market largely eliminates the effect.     

The Increasing Importance of Ethics in Computer Science

"The potential dangers of ignoring ethical issues exist for all business computer professionals". Drs Langford and Wusteman, of the Computing Laboratory, The University, Canterbury, Kent CT2 7NF, reflect on their experience of teaching ethics to computer scientists and on the problems to be encountered in this new field of applied ethics.     

A SURVEY OF THE COSTS OF WORLD SUGAR POLICIES

The world sugar market has long been characterized by volatileprices and widespread intervention. Controls on domestic prices,demand, and supply have created an inefficient pattern of worldproduction, consumption, and trade. Without government controls,production would shift from the countries with higher cost,subsidized production (especially the European Community, Japan,and the United States) to the countries with lower costs (suchas Australia, Brazil, and Thailand). The resources saved couldthen be directed to other activities. Sugar policies in countries with high costs reduce world sugarprices quite substantially in the long run and increase pricevariability significantly; production controls in countrieswith low costs increase world prices somewhat and also increasetheir variability. What would happen if all interventions ceased? Average worldsugar prices would probably— but not definitely—rise. World prices would definitely vary less, and economicconditions would definitely improve, especially in developingcountries that depend heavily on sugar exports. But the prospectsfor substantial reform of the sugar market are not promising,even though the GATT Uruguay Round continues. This article putsforward some modest proposals for changing the existing interventionsto lessen economic distortions and reduce costs.      

Work‐Related Training and the Probability of Transitioning from Non‐Permanent to Permanent Employment

It is widely believed that work‐related training increases a worker's probability of moving up the job‐quality ladder. This is usually couched in terms of effects on wages, but it has also been argued that training increases the probability of moving from non‐permanent forms of employment to more permanent employment. This hypothesis is tested using nationally representative panel data for Australia, a country where the incidence of non‐permanent employment, and especially casual employment, is high by international standards. While a positive association between participation in work‐related training and the subsequent probability of moving from either casual or fixed‐term contract employment to permanent employment is observed among men, this is shown to be driven not by a causal impact of training on transitions but by differences between those who do and do not receive training, that is selection bias.     

Stratography: The art of conceptualizing and communicating strategy

Representations of strategy tend to either be so generalized as to have little real meaning for employees, or go into such detail that people struggle to understand what is really required. The problem is this: a strategy not understood by those charged with implementing it is as bad as, or even worse than, not having a strategy at all. In 1983, a classic Business Horizons article by Karl Weick highlighted the importance of using graphical approaches to overcome strategy relation challenges; however, since then, little has been written regarding how managers might accomplish this successfully. Our article argues that individualized drawings of strategy, or what we term ‘stratography,’ could enable more effective conceptualization and communication of the strategic complexity that organizations face and the paths they are seeking to follow. Herein, we employ the latest thinking in cartography, educational philosophy, optics, graphic design, and military protocol to outline seven good practices of effective stratography.