Four operational patterns consistently drive the decision. Scheduling compression: concentrating all program testing into one or two van days per year creates a high-stakes logistics exercise where a portion of employees typically miss their appointment, each requiring individual rescheduling. Delayed access to results: results arrive weeks after the van visit in a batch report, which compresses timelines for STS notification, retest scheduling, and follow-up actions.
Four operational patterns consistently drive the decision. Scheduling compression: concentrating all program testing into one or two van days per year creates a high-stakes logistics exercise where a portion of employees typically miss their appointment, each requiring individual rescheduling. Delayed access to results: results arrive weeks after the van visit in a batch report, which compresses timelines for STS notification, retest scheduling, and follow-up actions. Baseline timeline gaps: new hires cannot be baselined until the next van visit, often months after first noise exposure, triggering the HPD-wearing requirement during that gap. Per-test cost: mobile testing fees increase predictably with headcount and typically include travel, technician time, and data management charges that compound at scale. When organizations evaluate these costs alongside the operational control and direct data access that in-house testing provides, the transition often shows a clear financial and compliance case. SHOEBOX: When organizations bring testing in-house with SHOEBOX, commonly reported outcomes include reduced per-test costs, improved retest completion rates, new-hire baselines obtained within days of hire, and consistent protocol enforcement across all test examiners.
