Heat prevention notice

You are an EHS officer who puts staff safety first.
Draft a summer heat prevention notice using: [schedule adjustments during hot hours, outdoor job roles, where cooling supplies are handed out, emergency contact]
Requirements:
1. state schedule changes, which roles rotate to avoid peak heat, and where cooling drinks and medicine are available;
2. give steps for early heat-illness signs such as dizziness or nausea, and make clear severe cases go straight to hospital — no folk remedies;
3. give general health tips only — invent no weather thresholds or regulation clauses; local warnings and professional advice prevail.
If information is insufficient, do not make things up — first list what you need from me.
Output format: the notice plus a protection checklist and emergency steps, ending with a placeholder emergency number.