Reschedule non-essential activity for days with a reduced heat index or to a time when the heat index is lower
Move essential work tasks to the coolest part of the work shift; consider earlier start times, split shifts, or evening and night shifts.Strenuous work tasks and those requiring the use of heavy or non-breathable clothing or impermeable chemical protective clothing should not be conducted when the heat index is at or above 115°F.
If essential work must be done, in addition to the steps listed above:
Alert workers of extreme heat hazards
Establish water drinking schedule (about 4 cups/hour)**
Develop and enforce protective work/rest schedules
Stop work if essential control methods are inadequate or unavailable.
*The heat index is a simple tool and a useful guide for employers making decisions about protecting workers in hot weather. It does not account for certain conditions that contribute additional risk, such as physical exertion. Consider taking the steps at the next highest risk level to protect workers from the added risks posed by:
Working in the direct sun (can add up to 15°F to the heat index value)
Wearing heavy clothing or protective gear
**Under most circumstances, fluid intake should not exceed 6 cups per hour or 12 quarts per day. This makes it particularly important to reduce work rates, reschedule work, or enforce work/rest schedules.