Work-related fatigue arising across AMWS operations: long driving days to sites, overnight stays, emergency call-outs, end-of-shift physical work, and the interaction between long days and high-vibration tool use.
All AMWS work locations — yard, road, site, overnight accommodation.
| Hazard | Existing controls | Initial | Additional controls | Residual | ||||
|---|---|---|---|---|---|---|---|---|
| S | L | R | S | L | R | |||
| Driver fatigue → road traffic accident | Drivers' hours rules observed; in-cab telematics; SOP 8.13 Driving; mobile phone hands-free policy | 4 | 3 | 12 | Mandatory 11-hr daily rest; max 9-hr driving day except emergency; weekly hours review by Aaron Mason; refresher driver-fatigue training in TBT-2026-09 | 3 | 1 | 3 |
| Cumulative fatigue from emergency call-out rotation | On-call rota across multiple operatives; emergency call-outs logged; SOP 5.4 Emergency Preparedness | 3 | 3 | 9 | Maximum 1-in-4 on-call frequency; rest day after a >4-hr night call-out; rota visibility on whatsapp works group | 2 | 2 | 4 |
| Fatigue interaction with HAVS exposure (long day + high-vibration tool) | SOP 8.10 HAVS; trigger-time monitoring; rotation between operatives | 3 | 3 | 9 | Cap trigger time at 75% of EAV (1.9 m/s² A(8)) on days >10 hrs on site; mandatory rotation after 60 min continuous breaker work | 2 | 1 | 2 |
| Cognitive fatigue → near-miss / poor decision (excavation, confined space) | RAMS sign-off; toolbox talks; supervisor presence | 4 | 2 | 8 | Permit-to-work issuer must be at start of shift, not 8 hours in; high-risk activities not to start within last hour of shift | 3 | 1 | 3 |
| Lone-worker fatigue (no buddy for early-start / late-finish) | SOP 8.8 Lone Working; check-in protocol; RA_HO_04 | 3 | 2 | 6 | Buddy check-in mandatory for shifts >10 hrs or starting before 06:00; fatigue self-assessment at start of solo shift | 2 | 1 | 2 |
| Overnight accommodation poor rest → next-day fatigue | Pre-booked accommodation; meal allowance | 2 | 3 | 6 | Use only Travelodge / Premier Inn standard or above; no twin-share for overnight call-out rotation; no >2 consecutive nights away without rest day | 2 | 2 | 4 |
| Manager fatigue (Site Supervisor extended decision days) | Aaron Mason reviews the Site Supervisor's working hours at the weekly Director / HSQE compliance call, prompted by FORM_WCC_01 | 3 | 2 | 6 | Aaron Mason to monitor Jason May's working hours weekly; deputise to a Team Leader when supervisor day exceeds 11 hours | 2 | 1 | 2 |
Road traffic safety draws on ISO 39001. Referenced undated so a new edition does not force a re-issue — the editions actually held are listed in APP_02 Section 3.
| Issue | Date | Approved By | Summary |
|---|---|---|---|
| 1 | 04/05/2026 | Aaron Mason, Director | Initial issue — fatigue management across driving, emergency call-out rotation, extended-hours working and lone working. |
Reviewed 15/09/2026, no change. This assessment was checked alongside the other seventeen home-and-office risk assessments and confirmed current. It covers operatives, drivers, supervisors and lone workers, so the September correction naming both office administrators does not apply to it. The review did find that this document carried no issue number — in its own control band or in APP_24 — while its seventeen sister assessments all did. Recorded as Issue 1 from its original issue date; the content is unchanged, so the date is unchanged.
This document is maintained under AMWS's continuous-compliance model. Substantive revisions are reviewed and signed off by the Directors at the standing weekly Director / HSQE compliance call (Sean Ashton, Onyx + Leanne Mason). Currency, cross-references and minor edits are checked at the monthly Onyx site visit. The annual Management Review (September) provides the strategic-level confirmation. Compliance is therefore continuous, not gated on a single annual meeting.