The working instructions that were thought to be logical, clear and easy to understand, describe in detail the
means of unfolding of activities in view of preventing and avoiding non-conformity generation, respectively of
identifying some reaction techniques and correction. This measure led to a significant reduction of
nonconformities, most of them stemming from the human resource in the sticker application workshop.
Thus, over the five month period of the analysis every operator was monitored and assessed individually. A
series of pieces of information was obtained that served as basis for the asymmetric frequency diagrams for
each work post, highlighting the better performance level (Fig. 6a.) or the worse performance level (Fig. 6b.) in
the work of every operator monitored during work time. Following the monitorization, it was seen that flaws
reduced in time for every operator analyzed.