In any methodological path for assessing and managing work-related stress, workers' participation contributes to the correct estimation of risk, as they are an essential source of information about their own working conditions.
Case studies provide a rigorous methodological path for investigating a phenomenon in its real-life context, and multiple case studies provide the opportunity to examine variations in the phenomenon of interest in different settings [ 15].
Formation of criteria for ecological evaluation of urban residential lots was proposed as a solution to this duality, and methodological path leading to criteria development was described.
In the follow-up interviews on a sample of companies that followed the entire methodological path, several recurring factors help explain the differences arising during the assessment phases.
The methodological path offered strongly recommends setting up a steering group for planning and managing the preparatory work for actual implementation of the intervention as well as for the involvement of the OSH professionals.
Lastly, during this phase, homogeneous groups of workers are identified (see [ 8] for a full definition of homogeneous groups) on which to implement the methodological path.
The final sample is composed of 124 companies participating to an interview on aspects relating to each phase of the INAIL methodological path put in place to implement the intervention.
Finally, we explored the perceptions of the usefulness of the whole methodological path and its assessment phases.
