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All Standards (152)
Every occupational heat-stress and wildfire-smoke standard tracked by this calculator, grouped by rule type. See also guidance by country and standards under review.
Work/rest limits (35)
- AAFA Guide to Protecting Workers from Heat Stress 2026 — AAFA
- Argentina Resolución SRT 30/2023 — Especificaciones Técnicas de Carga Térmica (Heat Stress) — Superintendencia de Riesgos del Trabajo (SRT), Argentina
- 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)
- 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 (unverified) — 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
- 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)
- Palestine Labour Minister Instruction No. 6/2005 — Safe Heat Levels (WBGT work/rest table) — Ministry of Labour, Palestinian National Authority
- Paraguay Decreto N° 14.390/92 — TGBH (WBGT) Exposure Limits and Work/Rest Table (Art. 228) — Ministerio de Justicia y Trabajo / Ministerio de Trabajo, Empleo y Seguridad Social (MTESS), Paraguay
- Peru RM 375-2008-TR Norma Básica de Ergonomía — WBGT Limit Values (items 26-27) — Ministerio de Trabajo y Promoción del Empleo (MTPE), Peru
- Québec Regulation respecting occupational health and safety (RRQ S-2.1, r. 13) — Schedule V Heat Stress — Éditeur officiel du Québec / Gouvernement du Québec (enforced by CNESST)
- Slovakia Decree No. 99/2016 Coll. — Protection against Heat and Cold Load at Work — Ministry of Health of the Slovak Republic (Ministerstvo zdravotníctva SR), as amended by vyhláška 227/2019 Z. z.
- 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
- Tanzania Workplace Environment Regulations 2023 (GN 289/2023) — WBGT Limits and 30 C Duty — Occupational Safety and Health Authority (OSHA Tanzania), Ministry of Labour, United Republic of Tanzania
- TB MED 507 Heat Categories — US Army / Air Force
- US Navy / Marine Corps Ashore Flag Conditions — Navy Bureau of Medicine and Surgery (BUMED)
- Venezuela COVENIN 2254:1995 (1ra Revisión) — Calor y frío: TGBH (WBGT) Exposure Limits (Tabla 3) — COVENIN / FONDONORMA (Comisión Venezolana de Normas Industriales), Venezuela
- 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 (8)
- Czech Government Regulation No. 361/2007 Coll. — Occupational Heat Load (Annex 1 Part A) — Government of Czechia; methodology by Státní zdravotní ústav (SZÚ), enforced by Krajské hygienické stanice
- 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 (9)
Control measures (51)
- Abu Dhabi OSHAD-SF Code of Practice 11.0 — Safety in the Heat (v4.0, 2024) — Abu Dhabi Public Health Centre (ADPHC), OSHAD System Framework
- Algeria Decret Executif 91-05 General Duty — Journal Officiel de la Republique Algerienne Democratique et Populaire (N Deg 04, 23 janvier 1991)
- Armenia Labour Code Art. 153 — Special Breaks Above +40 °C — National Assembly of Armenia (Labour Code); Ministry of Health (heat advisories)
- Austria Hitzeschutzverordnung 2026 — Republic of Österreich / BMASGPK (Hitze-V, BGBl. II Nr. 325/2025)
- Bulgaria Naredba № RD-07-3 of 18.07.2014 — Minimum Requirements for the Microclimate of Workplaces — Minister of Labour and Social Policy / Minister of Health, Republic of Bulgaria
- 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
- Croatia Pravilnik o zaštiti na radu za mjesta rada (NN 105/2020) — Workplace Climate Duties — Ministarstvo rada, mirovinskoga sustava, obitelji i socijalne politike, Croatia; public-health guidance issued by the competent institute for occupational medicine (Hrvatski zavod za javno zdravstvo, HZJZ)
- Denmark Arbejdstilsynet Indoor-Climate Temperature Guidance — Arbejdstilsynet (Danish Working Environment Authority)
- Ecuador Norma Técnica de Seguridad e Higiene del Trabajo — Art. 8 Heat (WBGT Ceilings) — Ministerio del Trabajo del Ecuador (Acuerdo Ministerial MDT-2024-196, Anexo 3; parent Decreto Ejecutivo Nro. 255)
- Estonia Töötervishoiu ja tööohutuse seadus § 6(4) — Indoor Climate Duty — Sotsiaalministeerium (Ministry of Social Affairs) / Tööinspektsioon (Labour Inspectorate), Estonia
- 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
- Germany ASTA Outdoor Heat Recommendation (Beurteilungstemperatur) — Ausschuss für Sicherheit und Gesundheit bei der Arbeit an Arbeitsstätten (ASTA) / BAuA, Germany
- Hungary 3/2002 SzCsM-EüM — Minimum Health and Safety Requirements for Workplaces (Climate Provisions) — Szociális és Családügyi Minisztérium (SzCsM) / Egészségügyi Minisztérium (EüM), Hungary; §7(8a)/(8b) inserted by 63/2023. (XII. 28.) GFM rendelet, Gazdaságfejlesztési Minisztérium
- Ireland General Application Regulations 2007 Reg. 7 — Room Temperature Duty — Health and Safety Authority (HSA), Ireland
- 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)
- Luxembourg ITM-ET 32.10 — 26 °C Workplace Temperature Ceiling — Inspection du travail et des mines (ITM), Luxembourg
- Morocco Arrêté n° 93-08 — Workplace Temperature Provisions (no heat threshold) — Ministère de l'Emploi et de la Formation Professionnelle, Morocco
- MSHA Mining Heat Stress Overlay — Mine Safety and Health Administration
- Netherlands Arbobesluit Art. 6.1 — Workplace Temperature Duty — Ministerie van Sociale Zaken en Werkgelegenheid / Nederlandse Arbeidsinspectie, Netherlands
- Nevada OSHA Heat Illness Prevention Regulation (R131-24) — Nevada OSHA / Nevada Division of Industrial Relations
- Norway Arbeidstilsynet Workplace Temperature Guidance — Arbeidstilsynet (Norwegian Labour Inspection Authority)
- 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
- Phoenix Contractor Outdoor Heat Safety Ordinance — City of Phoenix
- 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
- Portugal Decreto-Lei n.º 243/86 — Temperature & Humidity Comfort Rule — Ministério do Trabalho e Segurança Social (Ministry of Labour and Social Security), Portugal
- 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
- San Marino Regolamento n.7/2025 — Extreme Heat / Microclimate (Art. 3) — Congresso di Stato / Capitani Reggenti (Republic of San Marino)
- South Africa Physical Agents Regulations 2024 — Department of Employment and Labour (South Africa)
- Spain Outdoor Heat Amendment (RD 486/1997) — Government of Spain / BOE
- Switzerland SUVA/SECO Heat at Work — Four Heat Levels (Arbeiten im Freien bei Sonne und Hitze) — SUVA (Swiss National Accident Insurance Fund) with SECO (State Secretariat for Economic Affairs)
- Taiwan Article 303-1 Heat-Index Control Overlay — Taiwan Ministry of Labor / National Laws and Regulations Database
- Tanzania Occupational Health and Safety Act 2003 — General Duty (no heat threshold) — Occupational Safety and Health Authority (OSHA Tanzania), Ministry of Labour, United Republic of Tanzania
- Turkey Law No. 6331 General Duty — Republic of Turkiye official legislation database
- UK HSE Temperature Guidance — UK Health and Safety Executive
- Uruguay MTSS — Guía para trabajos con exposición a altas temperaturas (2025) — Ministerio de Trabajo y Seguridad Social (MTSS), Uruguay
Screening thresholds (26)
- Australia mining WHS regulations (WA reg 635, NSW cl 40, QLD coal s369, QLD metalliferous s143) — wet-bulb 27 °C heat management; 34 °C Queensland bar — WorkSafe WA, SafeWork NSW and Resources Safety & Health Queensland (mines regulators)
- Bangladesh Labour Rules 2015 (Schedule-I) — Bangladesh Ministry of Labour and Employment
- Belarus Hygienic Norm — Microclimatic Indicators at Workplaces (Post SovMin 37/2021) — Council of Ministers of the Republic of Belarus / Ministry of Health
- Brazil NR-15 Annex 3 (IBUTG) — Brazil Ministry of Labour and Employment
- Germany Klima-Bergverordnung (KlimaBergV) ss3, 4, 7 — underground mining climate: hour caps and extra breaks — Bundesministerium für Wirtschaft und Energie (mining), Germany
- Ghana Minerals and Mining (Health, Safety and Technical) Regulations 2012 (L.I. 2182) reg 180 — mine wet-bulb 32.5 °C ceiling; 27 °C longer breaks — Minerals Commission, Inspectorate Division, Ghana
- India State Factories Rules wet-bulb ceiling schedule (Kerala r.17A, Maharashtra r.22A, Madhya Pradesh r.23) — State Factories Inspectorates (Kerala; Maharashtra DISH; Madhya Pradesh)
- ISO 7243:2017 WBGT Screening — ISO
- Japan MHLW WBGT Warning System — Japan MHLW
- Japan 労働安全衛生規則 (Industrial Safety and Health Regulations) Art. 611-612 — underground workplace air temperature — Ministry of Health, Labour and Welfare, Japan (厚生労働省)
- Jordan Ministry of Labour Occupational Hazard Instructions 2023 — Annex 8 WBGT Reference Limits — Ministry of Labour, Hashemite Kingdom of Jordan
- Kazakhstan Hygienic Standards for Physical Factors — ТНС-index Limits (Order ДСМ-15, 2022) — Ministry of Health of the Republic of Kazakhstan
- Mexico NOM-015-STPS-2001 (IBUTG) — STPS (Mexico Ministry of Labour)
- Moldova HG 353/2010 — Maximum Workplace Air Temperature by Metabolic Rate — Government of the Republic of Moldova (Ministry of Labour and Social Protection)
- Namibia Health and Safety Regulations (GN 156/1997), reg 201(4) — 1-h WBGT above 30 °C — Ministry of Labour, Industrial Relations and Employment Creation (Namibia)
- NIOSH REL/RAL Logarithmic Curve — NIOSH
- Poland Dz.U. 2019 poz. 1883 §22 — underground mine climate-hazard grades (coal: dry-bulb 28/31/33 °C) — Minister Środowiska (Minister of the Environment), Poland
- Russia Rostekhnadzor Order No. 505 (2020) Mining Safety Rules — air temperature at faces and permanent workplaces — Rostekhnadzor (Федеральная служба по экологическому, технологическому и атомному надзору)
- Serbia Pravilnik on Preventive Measures — Workplace Air Temperature Limit — Ministry of Labour, Employment, Veteran and Social Affairs — Directorate for Safety and Health at Work / Labour Inspectorate
- South Africa Mine Health and Safety Act — GN 1754 Guideline for a Code of Practice on Thermal Stress (2022) — Department of Mineral Resources and Energy, Chief Inspector of Mines (South Africa)
- South Korea 광산안전기술기준 (Mine Safety Technical Standard) Arts. 10 and 149 — underground wet-bulb 34 °C ceiling; 30 °C cooling and rest — Ministry of Trade, Industry and Energy (MOTIE), South Korea (산업통상자원부)
- Spain RD 863/1985 RGNBSM Art. 68 and ITC 04.7.02 — underground equivalent temperature 33 °C — Ministerio de Industria y Energía (now MITECO), Dirección General de Política Energética y Minas
- Thailand Occupational Heat Standard 2006 — Ministry of Labour (Thailand)
- Ukraine НПАОП 10.0-1.08-25 Coal Mine Safety Rules (Order 2585 of 2025) paras 20-21 — underground air temperature — Ministry of Economy of Ukraine (Мінекономіки України)
- Uzbekistan SanPiN No. 0289-10 — Outdoor Work Temperature Limits — Chief State Sanitary Inspector of Uzbekistan
- Yukon Occupational Health Regulations (OIC 1986/164) s.12 — WBGT continuous-work limits — Yukon Workers' Safety and Compensation Health and Safety Branch (Yukon, Canada)
Stop-work / banned hours (18)
- Austria "Hitzefrei" Construction Rule (BSchEG) — BUAK / Austrian Federal Government
- Azerbaijan Labour Code Art. 233 — Work Stoppage Above 41°C — Milli Məclis (Parliament) / Ministry of Labour and Social Protection of Population (State Labour Inspectorate)
- Bahrain Midday Outdoor Work Ban — Bahrain Ministry of Labour
- China Measures on Management of Heat-Stroke Prevention and Cooling (2012, No. 89) — State Administration of Work Safety / Ministry of Health / MoHRSS / ACFTU (China)
- Colombia Decreto 1886/2015 Arts. 217-218 — underground mining effective temperature — Ministerio de Minas y Energía / Agencia Nacional de Minería, Colombia
- Cyprus Code of Practice for Thermal Stress — Department of Labour Inspection (Cyprus)
- Greece Ministry Heatwave Emergency Rule — Ministry of Labour and Social Security (Greece)
- Guangdong Measures on Labour Protection in High-Temperature Weather (Provincial Government Order No. 166, 2011) — Guangdong Provincial People's Government (China)
- Italy D.P.R. 320/1956 art. 33 — underground works temperature limits — Presidente della Repubblica / Ministero del Lavoro, Italy
- 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
- Mongolia Underground Ore Mine Safety Rules (Хүдрийн далд уурхайн аюулгүй байдлын дүрэм) paras 104-105 — wet-bulb 28 °C measures, 32 °C stop work — Ministry of Labour and Social Protection and Ministry of Mining and Heavy Industry, Mongolia (joint order A/06, A/04 of 2025-01-10)
- Odisha Labour & ESI Department Seasonal Midday Outdoor-Work Restriction — Labour & Employees' State Insurance (ESI) Department, Government of Odisha
- Oman Midday Work Ban — Oman Ministry of Labour
- Portugal Decreto-Lei 162/90 (RGSHT Minas e Pedreiras) Art. 148 — underground temperature limits — Ministério da Indústria e Energia (now DGEG), Portugal
- 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 (5)