Copyright © 2016 AWP
| Age | Tier 1 Validity | Tier 2 Validity | |-----|----------------|----------------| | 18–39 | 24 months | 36 months | | 40–54 | 12 months | 18 months | | 55+ | 6 months (annual ETT required) | 12 months |
The rocking motion of a platform and the ladder climbing require physical resilience. The 2017 guidelines specifically look for: