Objective: To validate the design of a scale to measure the workload of the midwives based on Classification of Nursing Interventions (NIC), through their multicentric application in different delivery units.
Methods: Quantitative, longitudinal, study multicentric character, conducted in three general university hospitals of the public system of health. The sample consisted of fifty midwives, who examined the validity of the construct of the designed scale, for a total of 370 births. Data collection began through the scale designed ad hoc by the research team, accounting for the time and average number of NIC interventions, performed at each birth.
Results: The midwives of the study, are subject to an increase in their workload regarding the number and average time spent conducting interventions NIC in each attended delivery. In their working day (12-hour shift) they allocate 960.61 minutes (16 hours in day shift) and 840.29 minutes (14 hours in night shift), to execute their roles in childbirth attendance.
Conclusion: The data indicate the validity of the scale designed ad hoc, as this instrument reflects the actual workload experienced by the midwives of the study.