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Switzerland SUVA/SECO Heat at Work — Four Heat Levels (Arbeiten im Freien bei Sonne und Hitze) — Heat Stress Control Measures

SUVA Checkliste 67135 'Arbeiten im Freien bei Sonne und Hitze' defines four heat levels for outdoor work in sun and heat: Level 1 base measures apply always; Level 2 covers 21–27 °C in shade, Level 3 covers 28–32 °C in shade, and Level 4 applies from 33 °C in shade. The SUVA/SECO summer guidance is advisory — SECO's own FAQ states the employer is not obliged to implement its measures — and Switzerland has no general legal maximum workplace temperature.

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Governing metric
Dry-bulb air temperature in the shade (°C)
Authority
SUVA (Swiss National Accident Insurance Fund) with SECO (State Secretariat for Economic Affairs)
Jurisdiction
Switzerland
Legal status
Guidance
Rule type
Control Overlay
Standard ID
HGC-119

Check a reading against this rule

This rule has no numeric trigger the calculator evaluates — it states duties and control measures rather than a threshold a reading can be checked against. Its measures are listed below.

Governing formula

heatLevel = airTempC >= 33 ? 4 : airTempC >= 28 ? 3 : airTempC >= 21 ? 2 : 1

Control measures

ParameterValue
heatLevel2MinC21
heatLevel2MaxC27
heatLevel3MinC28
heatLevel3MaxC32
heatLevel4MinC33

Programmable logic

Returns the SUVA heat level for a shade dry-bulb air temperature read from a Baumeisterverband mirror of SUVA Checkliste 67135: Level 2 at 21–27 °C, Level 3 at 28–32 °C and Level 4 from 33 °C; below 21 °C only Level 1 base measures apply. With no temperature supplied the engine reports not applicable.

The per-level SUVA measure lists were NOT retrieved and are deliberately not reproduced; each level surfaces only its verified boundary and a pointer to the checklist. No work/rest minutes and no stop-work are produced.

Inputs

Required inputs: none

Optional inputs: airTempC

Sources

Update history