Preliminary assessment: analysis of objective risk indicators related to work-related stress, under three headings: (1) sentinel events; (2) work content factors; (3) work context factors. At this stage, OSH professionals can use checklists, calling on some employees and their representatives. If no work-related stress risk factors are found in this preliminary assessment, results are entered on the risk evaluation report and a monitoring plan is developed. If some risks factors have emerged from the preliminary assessment, appropriate corrective interventions are to be planned and adopted; if these prove inadequate, the second phase, the deeper assessment , should start.