Exposure to occupational violence and the buffering effects of intra-oranizational support

This paper presents a conceptually distinct analysis of the data first reported by Leather et al. Specifically, it investigates the effects of exposure to a variety of forms of work-related violence upon work attitudes and general well-being within a sample of UK public house licensees—individuals who manage public houses and hold the licence permitting the sale of alcoholic drinks on the premises. In addition, it examines the role of social support in moderating such effects. Based upon a sample of 242 licensees, it reports a consistent interaction between exposure to such violence and the availability of perceived intra-organizational support in determining the size of any negative effects upon individual well-being, job satisfaction and organizational commitment. It is argued that exposure to all forms of work-related violence, including intimidation, verbal abuse and threat, should be seen as a potential stressor within the work environment, the negative effects of which are buffered by perceived support from within the organization, but not by that perceived to be available from informal sources such as family and friends.     

Safety culture

'Developing a positive health and safety culture is important if high standards of health and safety are to be achieved and maintained. There is a limit to the health and safety performance an organization can achieve without addressing the contribution which human factors have to play in eliminating occupational accidents and ill health' (David Eves, Deputy Director UK Health and Safety Executive; HSE 1997).     

Planning for technological innovation: Part II—investment in technological change in three major industries

In an article in the December 1977 issue the author described an analytical method to determine the reaction of British industry to the oil crisis. The purpose of this paper is to carry forward the discussion by examining and comparing circumstances in three British industries between 1963 and 1975.The paper aims first, to show how and why the cost structures of these three industries differ; second, to examine changes forced upon companies by inflation of earnings, statutory control of prices and the oil crisis; and finally to assess how far these congruent economic forces have impinged on tangible and intangible investment.The data used for this study were drawn from British and Canadian official statistics but, as described in Part 1, a new analytical technique was devised to give due weight to the full range of investment expenditure.     

A framework of decision making for technological change

The first article in this series2 drew a distinction between the costs of line operations- or current outputs—and those costs devoted to investment, or future outputs. As investment encompasses technological change—in practice it is dominated by it—this article examines some of the broader issues underlying decisions to invest and describes in outline a study being made of the economic criteria that are relevant to such decisions. In the longer term the objective is to develop a procedure or framework of criteria to assist the process of decision making; and this would include a frame of reference—a set of statistical time-series and analyses designed for the purpose.     

Social Distress Theory and Teaching About Homelessness: A Retrospective Analysis

This paper provides a retrospective analysis of our course:“Hamelessness in the United States: An Interdisciplinary Approach.” It analyzes how such a course reveals social distress on two distinct levels: course content and course process. We deploy the concepts, tenets and insights of social distress theory to provide a retrospective analytical framework for the course. In addition, we extend the theory by presenting two corollaries to it and show how the literature on homelessness provides alternative connections among the major elements ofsocial distress theory. Thus, we raise new questions for the theory to consider. We also make recommendations for potential teachers of courses on homelessness.     

An Exposure‐Response Threshold for Lung Diseases and Lung Cancer Caused by Crystalline Silica

Whether crystalline silica (CS) exposure increases risk of lung cancer in humans without silicosis, and, if so, whether the exposure‐response relation has a threshold, have been much debated. Epidemiological evidence is ambiguous and conflicting. Experimental data show that high levels of CS cause lung cancer in rats, although not in other species, including mice, guinea pigs, or hamsters; but the relevance of such animal data to humans has been uncertain. This article applies recent insights into the toxicology of lung diseases caused by poorly soluble particles (PSPs), and by CS in particular, to model the exposure‐response relation between CS and risk of lung pathologies such as chronic inflammation, silicosis, fibrosis, and lung cancer. An inflammatory mode of action is described, having substantial empirical support, in which exposure increases alveolar macrophages and neutrophils in the alveolar epithelium, leading to increased reactive oxygen species (ROS) and nitrogen species (RNS), pro‐inflammatory mediators such as TNF‐alpha, and eventual damage to lung tissue and epithelial hyperplasia, resulting in fibrosis and increased lung cancer risk among silicotics. This mode of action involves several positive feedback loops. Exposures that increase the gain factors around such loops can create a disease state with elevated levels of ROS, TNF‐alpha, TGF‐beta, alveolar macrophages, and neutrophils. This mechanism implies a “tipping point” threshold for the exposure‐response relation. Applying this new model to epidemiological data, we conclude that current permissible exposure levels, on the order of 0.1 mg/m³, are probably below the threshold for triggering lung diseases in humans.     

Editorial: Women and work

Abstract

When compared to day workers, night-shift workers report that they eat fewer meals, have poorer appetites, are less satisfied with their eating habits, and eat at different times of the day. When demographic variables are held constant, there do not appear to be any significant differences between experienced day and night-shift workers in caffeine or alcohol consumption. Exceptions to and variations in these findings are probably due to the background influences of social and cultural variables. Eating and drinking behaviours do effect human performance and mood, but little relevant data have been gathered from experienced night-shift workers. There are no shiftworker data evaluating the effectiveness of the special diets or dietary recommendations that have been proposed for use by night-shift workers. Thus, attempts to manipulate night-shift worker eating and drinking habits require experimental test.