Workplace heat
Heat shift hydration planner
Build a printable shift card for hot outdoor or indoor work: water pace, refill count, break rhythm, and an electrolyte check.
Quick answer
Use this as a planning aid, not a workplace safety policy. Heat work needs water, rest, shade or cooling, acclimatization, symptom checks, and a clear emergency plan.
Shift card
Pace cap
650
ml per hour
Plan about 5.5 bottles of a 710 ml bottle across 6 hours of hot or humid conditions and moderate work.
Every break
225 ml
about every 20 min
Remaining
3.9 L
5.5 bottles
Electrolytes
Worth checking
food still matters
Break card
Drink roughly 225 ml at each planned break.
Pair water with scheduled cooling breaks, shade or cooling, and a clear escalation plan for heat symptoms.
Electrolytes are most useful when sweat lasts several hours, the day is hot/humid, clothing dries salty, or normal meals are light.
Safety note
Hydration does not make unsafe heat safe. Confusion, fainting, chest symptoms, stopped sweating, or severe weakness need urgent heat illness response, not another bottle.
Official safety basis
This planner follows the conservative water-rest-shade framing used by OSHA and CDC/NIOSH. It does not replace employer heat procedures, local requirements, or medical guidance.
Frequently asked
How is this different from the heat hydration calculator?
The heat calculator estimates extra fluid from heat exposure. This planner turns a hot work window into a shift card: pace per hour, amount per break, bottle refills, and an electrolyte cue.
Can hydration prevent heat illness by itself?
No. Heat safety also needs rest, shade or cooling, work pacing, acclimatization, symptom monitoring, and workplace procedures.
When should workers consider electrolytes?
They are most useful when sweating continues for several hours, work is heavy, conditions are hot or humid, clothing dries salty, or normal meals are light.