This report investigates the importance professional divers and offshore workers give to safety culture in reducing accident probability. Using a conjoint analysis method 'accident risk' scenarios were used to estimate weights for influence of safety culture, quality of workplace supervision, time pressure and worker competency. The 'expected' weighting, if all factors were equally significant was 1.0 for each factor. All four factors contributed significantly to participants' assessment of accident probability but highest weighting was given to quality of supervision (1.48). Safety culture was given significantly lower weighting by offshore divers (0.74) than offshore workers (0.97).
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