La Isla Network-informed RSH-s Default Protocol — Heat Stress Work/Rest Limits

Default configurable RSH-s protocol for heat-stressed work: scheduled rest, shade/cooling, hydration, sanitation, and prevention of excessive core-temperature rise.

Open La Isla Network-informed RSH-s Default Protocol in the interactive Guidance Wiki →

Authority: La Isla Network / Adelante Initiative
Jurisdiction: Global
Legal status: Industry Guidance
Rule type: Schedule Engine
Standard ID: HGC-001

Governing formula

No standalone formula is published for this standard; see programmable logic and parameters below.

Work/rest limits

Scenario: 08:00–16:00 shift

Acclimatized workers

WBGT (°C)	Light 180 W	Moderate 300 W	Heavy 415 W	Very heavy 520 W
24	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr
25	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr
26	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr
27	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr
28	50 / 10 min work/rest per hr	45 / 15 min work/rest per hr	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr
29	50 / 10 min work/rest per hr	45 / 15 min work/rest per hr	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr
30	45 / 15 min work/rest per hr	40 / 20 min work/rest per hr	30 / 30 min work/rest per hr	15 / 45 min work/rest per hr
31	45 / 15 min work/rest per hr	40 / 20 min work/rest per hr	30 / 30 min work/rest per hr	15 / 45 min work/rest per hr
32	40 / 20 min work/rest per hr	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr
33	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
34	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
35	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
36	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work

Unacclimatized workers

WBGT (°C)	Light 180 W	Moderate 300 W	Heavy 415 W	Very heavy 520 W
24	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr	60 / 0 min work/rest per hr
25	50 / 10 min work/rest per hr	45 / 15 min work/rest per hr	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr
26	50 / 10 min work/rest per hr	45 / 15 min work/rest per hr	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr
27	45 / 15 min work/rest per hr	40 / 20 min work/rest per hr	30 / 30 min work/rest per hr	15 / 45 min work/rest per hr
28	45 / 15 min work/rest per hr	40 / 20 min work/rest per hr	30 / 30 min work/rest per hr	15 / 45 min work/rest per hr
29	40 / 20 min work/rest per hr	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr
30	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
31	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
32	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
33	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
34	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
35	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work
36	30 / 30 min work/rest per hr	20 / 40 min work/rest per hr	10 / 50 min work/rest per hr	Stop work

Inputs

Required inputs: wbgtC, workload, shiftStart, shiftEnd

Optional inputs: acclimatization, ppe, cafC

Sources

La Isla Network preventing heat stress — La Isla Network (official)
Workplace intervention for heat stress — International Journal of Environmental Research and Public Health / PMC (secondary)

Update history

2026-05-11 · Added to the calculator
This standard was added to the calculator.