This type of research, quant qualitative, had as its object of study, work absenteeism in health care and administrative staff, a health entity Cajamarca Peru and is conducted with the objective of determining the cause accredited and / or other reasons of absenteeism worker occupational group. Material and Methods: We started from a retrospective cohort study section through the review of 524 medical leave from 1 June 2008 to May 31, 2009, issued to 187 workers, with diagnoses based on the system of International Classification of Diseases the World Health Organization (ICD-10), continuing with the study of descriptive, qualitative, being selected to 10 workers who underwent in-depth individual interviews, aimed to identify other reasons, which are absent their work. Results: 54% of total medical leave was required for male workers and 46% female staff. Workers with the highest number o...