Researches descriptive of the documental type where it was made it it analyzes the registrations of the nursing workers' documents, in an university hospital. It was sought to identify the causes of the professionals absence in the period from Julho/98 to Junho/99. The results showed high absence index, tends as very defined causes the muscle-skeletal diseases (44,44%), cardiovascular (13%) and infectious (11%). The accidents in the work happened in smaller proportion (11%) and 17 servers (31,48%) they were not distant of the service. Conlcui-if that in spite of the small sample, the results can offer subsidies for the establishment of new guidelines, seeking the re orientation of the service of the worker's health in what concerns the reflection of the you lead of the nursing and of the management of health.