Why the pack is assembled before the first shift, not after
Documents gathered under pressure are always incomplete. When a head lessee or an insurer asks for a contractor file mid-tenancy, the request usually arrives with a short deadline and a specific list. Sites that built the pack at mobilisation answer it in an afternoon. Sites that did not spend a fortnight chasing a certificate that expired, an induction nobody recorded and a method statement written for a different building.
There is a practical benefit as well as an administrative one. Assembling the pack forces both parties to name things they would otherwise leave vague: which doors the cleaners use, which areas need supervision, what happens if a forklift is still moving at the start of the shift. Those answers belong in writing before anyone attends, because that is when they are cheap to agree and easy to change.
