France Décret n° 2025-482 heat-episode prevention duties for employers, graduated by the Météo-France canicule vigilance scale (vert/jaune/orange/rouge) via the companion Arrêté du 27 mai 2025.
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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.
No standalone formula is published for this standard; see programmable logic and parameters below.
Programmable logic
Uses the decree as a graduated control overlay keyed to the Météo-France canicule vigilance level (Art. R.4463-1). The work-organization adaptation duty (shifted hours, suspending strenuous tasks, extended rest) engages at vigilance jaune; orange and rouge add a mandatory daily risk reassessment and further adjustment. It imposes no unconditional stop-work.
The vigilance level is forecaster-judged and zone-specific, so it is accepted as an input rather than derived from temperature; when it is not supplied, the engine surfaces requiresOfficialVigilanceCheck.
This standard does not take WBGT as a required input, and publishes no standalone numeric parameter table here; see the governing metric and programmable logic above, and the primary source below.
Required inputs: none
Optional inputs: airTempC, indoorTempC, outdoor, meteoFranceVigilance
Recovered from repository history: optionalInputs changed. The direction of the safety effect was not computed, because reproducing it would require running the engine as it stood on that date.
This standard was added to the calculator.
Get notified when France Decret n° 2025-482 Heat Duties changes — threshold changes, scope and legal-status changes, additions and removals. Changes that permit more heat exposure than before are labelled as such.
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If a threshold, trigger, exemption, date or duty here disagrees with the governing text, tell us and point at the section. The form arrives with this standard already named, and a correction is checked against the same primary document it was encoded from.