Design choice (variant) Typical rationale Observed effect at the frontline Single, enterprise-wide risk matrix vs. multiple matrices (enterprise/corporate/site) Comparability vs. technical nuance A single matrix can strengthen consistency, improve understanding of escalation thresholds, and provide clarity on what constitutes “high” or “critical.” Multiple matrices can support technical specificity where needed, but when poorly reconciled they create confusion as thresholds and colour conventions diverge. This leads to inconsistent escalation decisions, uncertainty about required controls, and disagreement over risk priority. Health integrated with safety vs. separate health framework Unified reporting vs. specialist focus When integrated well, frontline personnel receive a unified picture of exposure and injury risks, making pre-start discussions more coherent. When health is separate but clearly linked, specialist knowledge is preserved and controls can be more targeted. However, if separation is poorly linked, exposure controls and monitoring results do not reliably reach supervisors, health-related learnings move slowly across boundaries, and workers may miss critical information about noise, dust, vibration, or psychosocial risks relevant to today’s tasks. 19
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