ABSTRACT
In 1941, H.W. Heinrich published a study relative to the direct and indirect costs of accidents of work where he displayed a method to study the causes of accidents which was known as the domino theory. This was based in a causality effect which determined an accident as a sequential group of five factors: ascendancy and social ambience, human failure, insecure act or dangerous condition, accident and personal damage (Nunes, 2006, sic by Carneiro, 2011).
