To explore accidents resulting from improvisation, researchers have to be aware of the particular situation in
which improvisation occurs. As well as improvisation could be a response for emergencies situations, it could also
be a form to surpass some barrier imposed by the lack of tools, materials, or personal at the moment the worker
needs them. This study focus on the latter situation and was conducted through the analysis of three accidents were
some type of improvisation at operational level took place in three Brazilian enterprises with 53, 100 and 326
employees each