What causes accidents?

This paper describes aspects of the findings of a three-year research project, Construction Accident Causality, funded by the UK Health and Safety Executive. The project developed a causality model, through a combination of focus groups and detailed study of 100 construction accidents, using an ergonomics systems approach, to identify where safety is compromised and why. It concludes that stakeholders responsible for the immediate accident circumstances, shaping factors and originating influences must all work hard to remove flaws in their safety systems to ensure that accidents are reduced

Causal factors in construction accidents

Although the British construction industry is one of the safest in Europe, one third of all work fatalities happen in construction and construction workers are six times more likely to be killed at work than employees in other sectors. A similar situation exists for non-fatal accidents. Although previous research has led to a good understanding of the extent and pattern of accidents in the construction industry, there has been only limited objective analysis of the full range of contributory managerial, site and individual factors. With this background, the study had the following aims: 1. To collect rich, detailed data on the full range of factors involved in a large sample of construction accidents. 2. Using this information, to describe the processes of accident causation, including the contribution of management, project, site and individual factors in construction industry accidents. The research used a combination of focus groups and studies of individual accidents in pursuit of these

Contributing factors in construction accidents

This overview paper draws together findings from previous focus group research and studies of 100 individual construction accidents. Pursuing issues raised by the focus groups, the accident studies collected qualitative information on the circumstances of each incident and the causal influences involved. Site based data collection entailed interviews with accidentinvolved personnel and their supervisor or manager, inspection of the accident location, and review of appropriate documentation. Relevant issues from the site investigations were then followed up with off-site stakeholders, including designers, manufacturers and suppliers. Levels of involvement of key factors in the accidents were: problems arising from workers or the work team (70% of accidents), workplace issues (49%), shortcomings with equipment (including PPE) (56%), problems with suitability and condition of materials (27%), and deficiencies with risk management (84%). Employing an ergonomics systems approach, a model is proposed, indicating the manner in which originating managerial, design and cultural factors shape the circumstances found in the work place, giving rise to the acts and conditions which, in turn, lead to accidents. It is argued that attention to the originating influences will be necessary for sustained improvement in construction safety to be achieved

Construction tools and equipment – their influence on accident causality

This paper presents tools and equipment aspects of the results from a three-year United Kingdom Government-funded research project investigating accident causality (ConCA). The project has used focus groups and studied in detail 100 construction accidents site audits, interviews with involved persons and follow-up along the causal chain. This paper concentrates on the influence of construction tools and equipment which were found to be important contributory factors identified by the research. They have largely been overlooked by previous studies and are not typically acknowledged as accident contributors. This paper argues for further work to confirm these links and for the inclusion of tools and equipment in the list of categories in statutory reporting procedures. This would also require an increased acknowledgement by construction managers of their influence, leading to better design and management of their supply and care on site