All Standards (93)

Every occupational heat-stress and wildfire-smoke standard tracked by this calculator, grouped by rule type. See also guidance by country.

Work/rest limits (31)

AAFA Guide to Protecting Workers from Heat Stress 2026 — AAFA
ACGIH TLV / Action Limit — ACGIH
Australia Thermal Work Limit (TWL) — WorkSafe Queensland / Mining and Quarrying Safety and Health Act
Belgium Code du bien-être au travail — WBGT Heat Stress Thresholds — SPF Emploi, Travail et Concertation sociale (Belgium)
British Columbia WorkSafeBC Heat Exposure Standard (OHS Guideline G7.28) — WorkSafeBC (British Columbia, Canada)
Brunei SHENA Heat Stress Guidance — Brunei SHENA
Chile DS 594 Heat Stress Standard (TGBH/WBGT Limits) — Chile Ministry of Health (Ministerio de Salud)
China GBZ 2.2-2007 Heat Stress Limits — National Health Commission (China)
Colombia Resolución 2400 de 1979 — Heat Stress Provisions — Ministerio de Trabajo y Seguridad Social (Colombia)
Costa Rica Thermal Stress Prevention Rule (Decreto No. 39147-S-TSS) — Costa Rica Consejo de Salud Ocupacional (CSO)
Egypt Ministerial Decree No. 211 of 2003 — Ministry of Manpower (Egypt)
El Salvador Decreto No. 89 (TGBH) — El Salvador Ministry of Labour
Hong Kong Labour Department — HK Labour Department
India WBGT Work/Rest Bands (source needs verification) — Bureau of Indian Standards
Indonesia Permenaker No. 5/2018 (ISBB) — Ministry of Manpower (Indonesia)
ISO 7933 Predicted Heat Strain (PHS) — ISO
La Isla Network-informed RSH-s Default Protocol — La Isla Network / Adelante Initiative
Malaysia DOSH Heat Stress Guidelines 2016 — Malaysia DOSH
Maryland OSHA Heat Stress Standard (COMAR 09.12.32) — Maryland Occupational Safety and Health (MOSH)
Minnesota OSHA Indoor Ventilation and Temperature Rule (5205.0110) — Minnesota OSHA
Nicaragua Resolución Ministerial sobre Higiene Industrial — Heat Stress (Chapter XV) — Ministerio del Trabajo (Nicaragua)
NIOSH 2016-106 Table 6-2 — NIOSH
Ontario OHCOW Humidex Heat Response Plan — Occupational Health Clinics for Ontario Workers (OHCOW)
Oregon OSHA Heat Illness Prevention Standard (AO 3-2022) — Oregon Occupational Safety and Health Division (Oregon OSHA)
South Korea KOSHA GUIDE W-12-2017 WBGT Table — KOSHA (Korea Occupational Safety and Health Agency)
Sweden AFS 2023:12 — Time-Weighted Heat Index (Work in Intense Heat) — Arbetsmiljöverket (Swedish Work Environment Authority)
Taiwan High-Temperature Work/Rest Standard — Taiwan Ministry of Labor / Ministry of Justice National Laws and Regulations Database
TB MED 507 Heat Categories — US Army / Air Force
US Navy / Marine Corps Ashore Flag Conditions — Navy Bureau of Medicine and Surgery (BUMED)
Vietnam QCVN 26:2016/BYT — Vietnam Ministry of Health
Washington State DOSH Outdoor Heat Standard (WAC 296-62-095) — Washington State Department of Labor & Industries (L&I/DOSH)

Work/rest limits (7)

Finland Työsuojelu Kuumatyö (Hot Work) Indoor Break Schedule — Työsuojeluhallinto (Finnish Occupational Safety and Health Administration), guidance developed jointly with Työterveyslaitos (Finnish Institute of Occupational Health, FIOH)
Malta OHSA Construction Heat-Stress Instrument (Admin Instrument No. 2 of 2025) — Occupational Health and Safety Authority (OHSA), Malta
Saudi MHRSD Heat Stress Rule — Saudi Ministry of Human Resources and Social Development
Singapore MOM / WSH (WBGT ≥ 32°C) — Singapore Ministry of Manpower
Slovenia Workplace Heat Rules (Pravilnik, Uradni list RS 53/2025) — Ministry of Labour, Family, Social Affairs and Equal Opportunities (MDDSZ), Slovenia
South Korea MoEL Heat-Work Rule — Ministry of Employment and Labor (South Korea)
Ukraine ДСН 3.3.6.042-99 — Sanitary Norms for Microclimate of Industrial Premises — Ministry of Health of Ukraine, Chief State Sanitary Doctor (Постанова № 42, 1999-12-01)

Alert levels (4)

Ahmedabad Heat Action Plan 2019 Update (applied across Gujarat) — Ahmedabad Municipal Corporation / NRDC / IIPH, with GSDMA Gujarat State HAP 2020
Better Work / GLI Apparel Heat Overlay — ILO Better Work / IFC / Cornell GLI
FIFA / Sports Hydration Break Overlay — FIFA / sports medicine guidance
NFL / American Football Heat Practice Overlay — Georgia High School Association By-Law 2.67 WBGT heat policy (reproduced in an NFL-hosted Korey Stringer Institute presentation)

Control measures (31)

Algeria Decret Executif 91-05 General Duty — Journal Officiel de la Republique Algerienne Democratique et Populaire (N Deg 04, 23 janvier 1991)
Austria Hitzeschutzverordnung 2026 — Republic of Österreich / BMASGPK (BGBl II 45/2026)
Cal/OSHA Indoor Heat Illness Prevention (Title 8 §3396) — California Division of Occupational Safety and Health
Cal/OSHA Outdoor Heat Illness Prevention (Title 8 §3395) — California Division of Occupational Safety and Health
Colorado Agricultural Labor Conditions Rules (7 CCR 1103-15 Rule 3) — Colorado Department of Labor and Employment
CPWR / OSHA-CPWR Construction Heat Overlay — CPWR / OSHA-CPWR Alliance
EU Framework Directive 89/391/EEC — European Union
France Decret n° 2025-482 Heat Duties — Government of France / Legifrance
Germany ASR A3.5 Room Temperature Rule — BAuA / Germany Federal Ministry of Labour and Social Affairs
Italy Regional Anti-Heat Ordinances (Lazio, Lombardy, Piedmont, Campania) — Regione Lazio; Regione Lombardia; Regione Piemonte; Regione Campania (INAIL/CNR Worklimate risk trigger)
Italy Worklimate / Regional Anti-Heat Overlay — INAIL / Worklimate / Italian regional ordinances
Kenya OSH Act General Duty — Kenya Law / Directorate of Occupational Safety and Health Services context
Latvia Cabinet Regulation No. 359 — Workplace Microclimate Limits — Cabinet of Ministers, Republic of Latvia (enforced by State Labour Inspectorate, VDI)
Lithuania HN 69:2003 Indoor Temperature Ceilings + VDI Outdoor Heat-Break Guidance — Lietuvos Respublikos sveikatos apsaugos ministerija (Ministry of Health, HN 69:2003) / Valstybine darbo inspekcija (VDI -- State Labour Inspectorate, outdoor break guidance)
MSHA Mining Heat Stress Overlay — Mine Safety and Health Administration
Nevada OSHA Heat Illness Prevention Regulation (R131-24) — Nevada OSHA / Nevada Division of Industrial Relations
NYC Executive Order No. 17 — Outdoor Worker Heat Protection — Office of the Mayor of New York City
Oil & Gas Heat Governance Overlay — IOGP / IPIECA-style governance
OSHA Federal Heat Rule NPRM (Proposed) — US OSHA
Philippines DOLE Labor Advisory No. 08-23 — Philippines DOLE
Poland Maximum Workplace Temperature Rule (§30a, Dz.U. 2026 poz. 927) — Ministerstwo Rodziny, Pracy i Polityki Społecznej (Ministry of Family, Labour and Social Policy), Poland
Poland Preventive Meals & Drinks Regulation (Dz.U. 1996 Nr 60 poz. 279) — Rada Ministrów (Council of Ministers), Poland
Romania OUG nr. 99/2000 — Extreme Temperature Worker Protection — Government of Romania (Ministry of Labour / Ministry of Health / Labour Inspectorate)
Russia Rospotrebnadzor Heat-Work Recommendations — Rospotrebnadzor (Federal Service for Surveillance on Consumer Rights Protection and Human Well-Being); SanPiN 1.2.3685-21 context: Chief State Sanitary Doctor of the Russian Federation
Safe Work Australia Heat Guide — Safe Work Australia
San Antonio Contractor Outdoor Heat Ordinance — City of San Antonio
South Africa Physical Agents Regulations 2024 — Department of Employment and Labour (South Africa)
Spain Outdoor Heat Amendment (RD 486/1997) — Government of Spain / BOE
Taiwan Article 303-1 Heat-Index Control Overlay — Taiwan Ministry of Labor / National Laws and Regulations Database
Turkey Law No. 6331 General Duty — Republic of Turkiye official legislation database
UK HSE Temperature Guidance — UK Health and Safety Executive

Screening thresholds (7)

Bangladesh Labour Rules 2015 (Schedule-I) — Bangladesh Ministry of Labour and Employment
Brazil NR-15 Annex 3 (IBUTG) — Brazil Ministry of Labour and Employment
ISO 7243:2017 WBGT Screening — ISO
Japan MHLW WBGT Warning System — Japan MHLW
Mexico NOM-015-STPS-2001 (IBUTG) — STPS (Mexico Ministry of Labour)
NIOSH REL/RAL Logarithmic Curve — NIOSH
Thailand Occupational Heat Standard 2006 — Ministry of Labour (Thailand)

Stop-work / banned hours (10)

Austria "Hitzefrei" Construction Rule (BSchEG) — BUAK / Austrian Federal Government
Bahrain Midday Outdoor Work Ban — Bahrain Ministry of Labour
Cyprus Code of Practice for Thermal Stress — Department of Labour Inspection (Cyprus)
Greece Ministry Heatwave Emergency Rule — Ministry of Labour and Social Security (Greece)
Kerala Seasonal Midday Outdoor-Work Rest Order (Minimum Wages Act, 1958, ss. 24-25) — Kerala Labour Commissionerate
Kuwait Noon Work Ban — Kuwait Public Authority for Manpower
Oman Midday Work Ban — Oman Ministry of Labour
Qatar Ministerial Decision No. 17 of 2021 — Qatar Ministry of Labour
Tamil Nadu Heat Wave Action Plan (TNSDMA) + BOCW Outdoor-Work Timing Restriction — Tamil Nadu State Disaster Management Authority / Tamil Nadu Labour Department (BOCW)
UAE Midday Break Rule — UAE Ministry of Human Resources

Wildfire smoke thresholds (3)

Cal/OSHA Protection from Wildfire Smoke (Title 8 §5141.1) — California Division of Occupational Safety and Health
Oregon OSHA Protection from Wildfire Smoke (OAR 437-002-1081) — Oregon Occupational Safety and Health Division (Oregon OSHA)
Washington L&I / DOSH Wildfire Smoke Rule (WAC 296-820) — Washington State Department of Labor & Industries (L&I/DOSH)