Rocio Villar, assistant physician of the Occupational Health Service of PSMar, and pre-doctoral student of CiSAL, presented the first results of his thesis to the Nursing Management of PSMar, highlighting that pregnant workers of PSMar, especially nurses and assistant nurses nursing (57% of all pregnancies), are active in the hospital two thirds of the total time of pregnancy, and the third part that are absent, a third is for the benefit for risk during pregnancy, and the rest for temporary disability due to common contingency.