Persistence of announcement effects on the intraday volatility of stock returns: Evidence from individual data

We analyze the persistence effects in the empirical relationship between announcement releases and return volatilities of four major companies of the French stock market using high frequency data over the period 1995–1999. Besides its institutional stability, this sample period avoids the econometric difficulties inherent to simultaneous news arrivals. Our approach contributes to the relevant literature in that we focus on individual stock volatilities rather than indices, we distinguish firm‐specific and macroeconomic announcements, and we endogenize both the durations of announcement effects and the response patterns of equity prices. We find that our individual volatilities are affected by a systematic market effect, calendar effects, announcements related to the firms’ macroeconomic environment and announcements related to the firms’ and their competitors’ strategic dealings and commercial outcomes. We find evidence that all volatility responses are gradual with persistence horizons ranging from one to three hours, revealing a significant degree of inefficiency of the French stock market over the period. This inefficiency can be viewed as a breeding ground for the implementation of more performant informational and trading systems that allowed markets to move towards more efficiency.     

Australian Family Tax Reform and the Targeting Fallacy

Over recent decades, Australia's highly progressive, individual‐based taxation of families has been replaced by a system that tends towards joint taxation with an inverted U‐shaped rate scale. The reform has been implemented by introducing family‐income‐targeted child payments (now Family Tax Benefit Part A) and by lowering tax rates on higher incomes. The new system has shifted the burden of taxation to two‐earner families on low and average wages and, in particular, to working married mothers as second earners. For reasons of fairness and efficiency, we propose returning to more progressive individual taxation and universal family payments.     

Technologists talk: making the links between design, problem-solving and experiences with hard materials

Design and problem-solving is a key learning focus in technology education and remains a distinguishing factor that separates it from other subject areas. This research investigated how two expert designers considered experiences with hard materials contributed to their learning design and problem-solving with these materials. The research project used a qualitative approach and conducted semi-structured interviews with two mechanical engineers. They identified their experiences under three key headings that provided them with much of the essential knowledge and understanding they employ today to design and problem-solve with hard materials. These included experience of seeing outcomes that provided feedback on their designs, experiences that informed about materials and material selection and accessing others’ experiences from communities of practice.     

Continuing Progress? Trends in Occupational Segregation in the United States over the 1970s and 1980s

This study uses comparable data on 470 detailed occupations from the 1970, 1980, and 1990 Censuses to analyze trends in occupational segregation in the United States in the 1980s and compare them in detail to the 1970s experience of declining segregation. We find that the trend towards reduced segregation did indeed continue into the 1980s at only a slightly slower pace. In both decades, changes in sex composition within occupations accounted for the major share of the decline in segregation (compared to changes in the mix of occupations in the economy). We also find that the pattern of changes in the sex composition of occupations and in the employment distribution of workers that produced the observed reductions in segregation were remarkably similar in each of these two periods. This similarity potentially poses some problems for the future. As women continue to enter the same areas, resegregation, which we found to have relatively moderate effects in the 1970s and 1980s, becomes an increasing possibility. Continued progress towards reducing occupational segregation requires that women succeed in entering a broader range of traditionally male occupations and/or a greater flow of men into traditionally female occupations.     

Taking technology to task: The skill content of technological change in early twentieth century United States

This paper uses new data on the task content of occupations to present a new picture of the labor market effects of technological change in pre-WWII United States. I show that, similar to the recent computerization episode, the electrification of the manufacturing sector led to a “hollowing out” of the skill distribution whereby workers in the middle of the distribution lost out to those at the extremes. OLS estimates show that electrification increased the demand for clerical, numerical, planning and people skills relative to manual skills while simultaneously reducing relative demand for the dexterity-intensive jobs which comprised the middle of the skill distribution. Thus, early twentieth century technological change was unskill-biased for blue collar tasks but skill-biased on aggregate. These results are in line with the downward trend in wage differentials within U.S. manufacturing up to 1950.     

In Sickness and in Health: Recent Judicial Developments in Americans with Disabilities Act Association Discrimination Cases

A little-known provision of the Americans with Disabilities Act (ADA) prohibits covered employers from taking an adverse employment action against a qualified employee if a determinative factor in the adverse employment action is the disability of an associate or relative of the employee. A review of the reported court opinions indicates that plaintiff employees often encounter difficulty in these cases. Some plaintiffs are unable to prove that they are “qualified” employees at the time of the adverse employment action, and other plaintiffs find it difficult to prove that a determinative factor in the adverse employment action was the disability of the associate or relative. However, plaintiffs have achieved some success as evidenced in the 2008 U.S. Circuit Court of Appeals holdings in Dewitt v. Proctor Hospital and Trujillo v. PacifiCorp. This paper describes reported U. S. Circuit Court of Appeals opinions about ADA association discrimination, its relationship to the Family and Medical Leave Act and Employee Retirement Income Security Act, and the implications for employers, employees, and lawmakers. It also offers practical guidance to both employees and employers for asserting and managing rights and potential liability in this area.     

Malaysian industrial relations at century's turn: Vision 2020 or a spectre of the past?

Malaysia's industrial relations (IR) has been characterized by extensive state control guaranteeing a high level of managerial prerogative within the workplace, minimal overt conflict and very little bargaining power for labour. These arrangements were an integral component of the package to attract investors when Malaysia's industrialization strategy focused on low-cost, export-oriented industries. Since then, however, Malaysia has adopted the goal of developed country status by 2020 and embarked on a higher value-added, more capital-intensive industrialization strategy. This paper analyzes current Malaysian IR at the workplace level, posing the question as to whether the economic progress towards 'Vision 2020' is being accompanied by a transformation of Malaysia's IR. It will be seen that there is evidence of substantial growth in training, the implementation of multi-skilling in some workplaces as well as isolated instances of some 'lean production' practices. Fundamental change, however, is not occurring; workers remain excluded from the decision-making process both within and outside the workplace.