Rule 25: Artificial humidification
Reviewed by Finin2min Editorial Desk · Last Reviewed 12 September 2026
Rule 25 — Governs artificial humidification and the rights, duties, powers or procedure expressly stated in this rule. Key operative text: Employer of every factory in which humidity of the air is artificially increased shall ensure that:- (i) if employees are exposed in all or some of their tasks to extreme heat and high humidity, and the hazard cannot be…
2-minute answer
OSHWC Code Rule 25: Artificial humidification. Full 2026 notified text, Code links, timelines, forms, examples, Q&A and official Gazette source.
How to use this page
Rule 25: Artificial humidification should be read with the operative Code/Scheme/Rules and the establishment or employee facts to which it applies. Coverage, wage base, service history, State overlay and commencement date can change the outcome.
Practical checklist
- Confirm coverage of the establishment and employee/member before applying the provision.
- Check the latest Gazette, corrigendum and portal/circular instructions for the relevant date.
- Retain wage/service/member data, nominations, approvals, challans/returns and acknowledgements.
- Where a State rule or establishment-specific exemption applies, document that overlay separately.
Worked use case
Example: the same employee event can produce a different compliance result if the establishment is exempt, the service period is different, or the operative rule changed after the relevant date. Record those facts before calculating the benefit or obligation.
Official-source checks
- Open the notified Rules ↗
- Occupational Safety, Health and Working Conditions Code, 2020 — India Code ↗
Related Finin2min guidance
Reviewed for currentness: 12 September 2026. Educational/professional reference; the controlling law, notification, order or official filing instruction prevails.
Occupational Safety, Health and Working Conditions (Central) Rules, 2026 were finally notified under G.S.R. 345(E), 8 May 2026. The Central Rules must be read with the Code and any later amendment/corrigendum.
Finin2min analysis — operative rule mechanics
Operative clauses
- Employer of every factory in which humidity of the air is artificially increased shall ensure that:- (i) if employees are exposed in all or some of their tasks to extreme heat and high humidity, and the hazard cannot be eliminated, then the risks to safety and health shall be assessed and the controls necessary to reduce the hazard or risks shall be effected;
- (iii) where part of the risk arises from the metabolic heat produced during work or from direct exposure to sunlight and high outdoor air temperatures and when other methods of eliminating the risk are impracticable, a work-rest cycle for exposed employees, preferably in a shaded, air-conditioned or cooler resting space shall be provided to allow the employee to recover;
- (a) to recognise symptoms which may lead to heat stress, in themselves or others, and the steps to be taken to prevent onset and or emergencies; and (b) in the action to be taken in the event of the increased risk of accidents because of high temperatures or humidity;
Provisos / explanations
- No proviso/explanation was separately extracted from this rule.
Thresholds & timelines
- No explicit day/month/year/hour/percentage/rupee expression was detected in this rule text.
Mapped Code sections
Full notified text — Rule 25
25. Artificial humidification.— Employer of every factory in which humidity of the air is artificially increased shall ensure that:- (i) if employees are exposed in all or some of their tasks to extreme heat and high humidity, and the hazard cannot be eliminated, then the risks to safety and health shall be assessed and the controls necessary to reduce the hazard or risks shall be effected; (ii) the above risk assessment takes into account including the use of appropriate protective clothing against hazardous substances that can increase the risk of heat stress and also that respiratory protectors are uncomfortable and less likely to be used in extremely hot working environments; (iii) where part of the risk arises from the metabolic heat produced during work or from direct exposure to sunlight and high outdoor air temperatures and when other methods of eliminating the risk are impracticable, a work-rest cycle for exposed employees, preferably in a shaded, air-conditioned or cooler resting space shall be provided to allow the employee to recover; (iv) to maintain hydration, sufficient quantities of drinking water, with the proper electrolytes, where appropriate, are provided at easily accessible places; (v) where a residual risk of heat stress remains even after all the practical control measures have been taken, employees are to be adequately supervised so that they can be withdrawn from the hot and humid conditions if symptoms occur. Also, that first-aid facilities, and staff is trained in the use of such facilities, are available; (vi) employees exposed to extreme hot and humid conditions are instructed and trained: (a) to recognise symptoms which may lead to heat stress, in themselves or others, and the steps to be taken to prevent onset and or emergencies; and (b) in the action to be taken in the event of the increased risk of accidents because of high temperatures or humidity; (vii) tests for determining the relative humidity of the air are carried out and recorded and if humidity level of the air is found to be harmful to the health of employees, it is artificially regulated in such a manner that humidification and temperature do not cause discomfort to employees and the water used for the purpose is taken from public supply or other source of drinking water or is purified before it is so used; (viii) Instruments for measurement and recording of humidity and temperature at appropriate location are provided and maintained. B. MINES
Application and evidence
- Primary statutory test — Employer of every factory in which humidity of the air is artificially increased shall ensure that:- (i) if employees are exposed in all or some of their tasks to extreme heat and high humidity, and the hazard cannot be eliminated, then the risks to safety and health shall be assessed and the controls necessary to reduce the hazard or risks shall be effected;
- Additional operative limb — (iii) where part of the risk arises from the metabolic heat produced during work or from direct exposure to sunlight and high outdoor air temperatures and when other methods of eliminating the risk are impracticable, a work-rest cycle for exposed employees, preferably in a shaded, air-conditioned or cooler resting space shall be provided to allow the employee to recover;
- Code Section mapping — 23. Read the mapped provision together with this text rather than treating the concordance as a substitute for it.
- Evidence file — retain facts and records proving the role/status of: Employer, Employee / worker.
Cross-references & prescribed forms
Sections cited/mapped
Forms
No form is directly mapped in the current rule register.
Worked example
For an establishment affected by artificial humidification, the compliance owner should identify the applicable sector and authority, document the prescribed control/notice/record and retain inspection or training evidence. A text point to test is: “Employer of every factory in which humidity of the air is artificially increased shall ensure that:- (i) if employees are exposed in all or some of their tasks to extreme heat and high humidity, and the hazard cannot be eliminated, then the risks to safety and health shall be ass” Reconcile the mapped Code Section(s) 23.
Illustrative only. Use the exact notified rule, prescribed form and competent authority.
Q&A — Rule 25
What is Rule 25 of the Occupational Safety, Health and Working Conditions (Central) Rules, 2026?
Rule 25 — Governs artificial humidification and the rights, duties, powers or procedure expressly stated in this rule. Key operative text: Employer of every factory in which humidity of the air is artificially increased shall ensure that:- (i) if employees are exposed in all or some of their tasks to extreme heat and high humidity, and the hazard cannot be…
What does Rule 25 require or permit?
A principal operative clause extracted from the notified rule is: “Employer of every factory in which humidity of the air is artificially increased shall ensure that:- (i) if employees are exposed in all or some of their tasks to extreme heat and high humidity, and the hazard cannot be eliminated, then the risks to safety and health shall be assessed and the controls necessary to reduce the hazard or risks shall be effected;” Read it with all sub-rules and provisos below.
Does Rule 25 contain a proviso or explanation?
No standalone proviso or explanation was extracted from this rule text. Check the complete rule below for clause-level conditions.
What deadline, period, percentage or amount appears in Rule 25?
No explicit day/month/year/hour/percentage/rupee expression was detected in this rule text.
Which Code sections are linked to Rule 25?
The current concordance maps Rule 25 to Section(s) 23.
When did Rule 25 come into force?
The final Central Rules were notified as G.S.R. 345(E), 8 May 2026; Rule 1 states that the Rules come into force on publication. Check any later amendment or corrigendum before reliance.
Primary sources
Occupational Safety, Health and Working Conditions (Central) Rules, 2026 — official Gazette PDF ↗
Occupational Safety, Health and Working Conditions Code, 2020 — India Code ↗
Official sources checked: 12 September 2026.