Diagnosis was split into ergonomic and production data analysis.
Ergonomics diagnosis mainly comprised the analysis of work
carried out in the four evaluated sectors and an in depth analysis of
the problems raised in the appraisal stage. Two ergonomists performed
non-systematic observations during a two-week period to
understand the work in each sector and their interactions. Work
was videotaped, and the cycle times required to perform different
tasks were recorded during different times of the journey. This data
allowed a posteriori assessment of how work was performed, a
more detailed time/motion analysis, and a postural risk evaluation
based on the computerized OWAS (WinOwas) method (Kivi and
Matilla, 1991).